Top 20 Best Cryptocurrency Exchange Platforms in 2020

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The Best Cryptocurrency Trading Software
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https://preview.redd.it/7gwkbmnafuz31.jpg?width=800&format=pjpg&auto=webp&s=4229f964fee8edf8f6cdf260b0d331e33e5698a4
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Nishue - The Best Cryptocurrency Trading Software

Nishue - The Best Cryptocurrency Trading Software submitted by bdtaskltd to u/bdtaskltd [link] [comments]

Nishue - The Best Cryptocurrency Trading Software

Nishue - The Best Cryptocurrency Trading Software submitted by bdtaskltd to u/bdtaskltd [link] [comments]

Cryptocurrency Trading Software - The World's Best Cryptocurrency Trading Software

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Nishue is the world best all in one cryptocurrency trading software package

#Nishue is the world best all in one cryptocurrency trading software package. It is the integrated system to manage all aspects of cryptocurrency trading platform like all kinds of crypto buy, sell, exchange, lending, MLM & affiliate management, converting, live market comparison & analyzing, etc. #cryptocurrencybuysell #cryptocurrencyexchange#cryptocurrencytradingsoftware More info: https://buff.ly/2Xdweyh
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Best Trading Software & Cryptocurrency Algorithms - Tradewithrobbie

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Best Cryptocurrency Trading Robot 2017,2018 free Crypto Currency trading bot Software

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What is the best EFILE tax software for people who trade cryptocurrency?

(Posting from Ontario)
The list of certified software for the 2017 tax year has now been released and is available here. I feel that I know how to calculate my capital gains for the little bit of money that I've invested in cryptocurrency (special thanks to this thread for the clear explanation), and now I just need to put that information into the tax software.
Is one of the tax programs better than the others for dealing with capital gains from cryptocurrency? Or are they all about the same, and I can just pick any one? Or is this all too complicated and I need to pay a tax accountant to help me?
Thanks!
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Chainlink analysis - my thoughts and research

Necessary Disclaimer: no rule breaking intended. No price manipulation intended. I only want to share verifiable facts/links and my analysis. If I am doing anything against the rules please let me know and I will do my best to fix it ASAP. I trade crypto, including LINK, and I am currently short on LINK. This is not financial advice; this is just for my own record and to start a discussion for anyone who might want more transparency around LINK.

TL;DR:

I believe there is a lot of misinformation, uncertainty, and unanswered questions about the LINK token, the Chainlink ecosystem, the SmartContract parent company. I also believe that LINK's current price is unjustified based on fundamental factors like usage/business case/current customers/future potential. So I'm raising some points and asking some questions.
What is this post? Why should I care? How do I use it?
Read or skim it. It's about the LINK token, the Chainlink ecosystem, and the parent company SmartContract. It's about why I believe the price of the LINK token may be currently driven mostly by hype and not backed by standard market fundamentals like usage/economics.
Update 9 AUG: reorganizing, rewriting this post and moving supporting data/sources into "appendix" comments below on this post. The previous versions of this post and my comments elsewhere were too emotionally charged and caused more division rather than honest, evidence-based, productive discussion and I sincerely apologize for that. I have now rewritten it and will continue to update it.

PARTNERSHIPS

Who has Chainlink partnered with? Who is using Chainlink's technology and network? Who is contributing to developing Chainlink?
Google - this is the pinned tweet on Chainlink's official page. Nothing there about Google using Chainlink services or co-developing with them. Just that blockchains/oracles CAN use google cloud services (APIs?). This is Google Cloud's June 13, 2019 blog post: https://cloud.google.com/blog/products/data-analytics/building-hybrid-blockchain-cloud-applications-with-ethereum-and-google-cloud
Oracle - (TODO. This seems to have potential as some product manager at Oracle has posted that chainlink integration is coming Q3/Q4 of 2020)
SWIFT - the best they've got is a 30 second video with NOBODY from SWIFT present, with a *hypothetical* use case using SWIFT API.
Intel This is the only google result for "chainlink site:intel.com", and it casually mentions that Intel's TEE (trusted execution environment) technology can be used to improve the security of oracles/blockchains. Nothing about Intel themselves using or developing with Chainlink. https://software.intel.com/content/www/us/en/develop/articles/new-confidential-computing-solutions-emerge-on-the-hyperledger-avalon-trusted-compute.html
Another 240+ claimed project integrations:
[TODO] There are so many to keep track of. Every week or even more frequent is yet another integration *announcement*
Current DeFi usage: we've heard that Chainlink "secures" $1 billion in DeFi. But that's not in value locked: https://defipulse.com/ (LINK doesn't even appear on that list). That's just with DeFi data supposedly being priced using Chainlink nodes.
EG Synthetix:
https://blog.synthetix.io/chainlink-decentralizes-first-wave-of-synthetix-price-feeds/ yet where does Synthetix actually PAY to use an oracle? Not visible on-chain, maybe someone will find it.
https://defipulse.com/blog/3-defi-dapps-starting-2020-off-strong/ "... Chainlink's following includes partnerships big and small, including Intel and Google Cloud services" example of misleading/exaggerated partnership claims being circulated.

Chainlink's ROADMAP

Threshold signatures, staking, on-chain SLAs:
How real are these, is there a roadmap, how will this benefit users, is there any evidence of users currently *wanting* to use chainlink but needing these features and actively waiting for Chainlink to launch these?
Staking: for there to be a valid incentive for users to stake LINK, it has to return around 5% annually because anything substantially under that would have users putting their money elsewhere (https://www.stakingrewards.com/cryptoassets) (not counting speculative capital gains in terms of LINK's price, but price gain per token/coin applies to all other crypto projects as well).
Currently, for stakable cryptos, around 30-80% of their total supply is staked, and a good adjusted reward is on the order of 5% as well (some actually negative, some 10%+). The promise of staking incentivises people to buy and hold more LINK tokens (again, many other crypto projects have staking already live). That 5% reward will ultimately have to come from the customers who pay Chainlink oracle nodes to use their services, so it's an extra 5% fee for them. Of course, in the near future, the staking rewards *could* be subsidized by the founders' reserve wallets.
Threshold signatures: addressed below in a comment.
On-chain SLAs: [TODO]
Here's supposedly Chainlink's agile/project planning board. (TODO: verify that it is indeed Chainlink's, and then analyse it)
https://www.pivotaltracker.com/n/projects/2129823

LINK wallet addresses

As LINK is an ERC20 token on the Ethereum blockchain, all its movements are visible, all the way from the genesis creation of 1,000,000,000 LINK tokens through to aggregator nodes through to cashing out on exchanges. Below are some examples and some reasons why this may be concerning to investors/holders of LINK.
This is one LINK address whale with over 6 million LINK. Looks like some of the funds end up on a Turkish exchange Paribu. https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xc6bed363b30df7f35b601a5547fe56cd31ec63da This wallet has moved out >200,000 LINK in the last 24 hours. Don't know where, go trace it.
Typical data provider example. Lots of named Chainlink oracle nodes pay this address: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x72f3dff4cd17816604dd2df6c2741e739484ca62 Usually 0.16 LINK to this address every few minutes, sometimes 2 LINK. This data provider has sent out ~11,620 LINK out to the following wallet: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xa5d0084a766203b463b3164dfc49d91509c12dab That wallet has cashed out 9,560 LINK to 1inch.exchange (a DEX) over the past year. Has also transferred 6000 LINK to a currently loaded wallet (possibly exchange account ready to sell?): https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x088d50c0bb5381a1205d1182cc21496c6fdc4c62 Another destination accumulation wallet (~493,000 LINK with no out transfers yet) https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x7758e507850da48cd47df1fb5f875c23e3340c50 (unrelated but a sell order of this size would drop LINK's price by 10-30% on Binance, someone check my maths on this) Now tracing back who funds the 0x72f3... data provider, we see a number of named Chainlink Aggregator nodes. Picking one at random, say the TUSD/ETH one: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x73ead35fd6a572ef763b13be65a9db96f7643577 It was last funded March 12 2020 with 5000 LINK. Tracing back the funds we ultimately come to the genesis wallet of the Chainlink network itself, the original source of the 1,000,000,000 LINK tokens in existence. (side note: some interesting-looking transactions there) This is the first child of the genesis wallet that received 100,000,000 from the genesis wallet. https://etherscan.io/tokentxns?a=0xf37c348b7d19b17b29cd5cfa64cfa48e2d6eb8db Last time this wallet transferred out was YESTERDAY for 500,000 LINK. Now this doesn't prove anything, DYOR, but to me it looks like the genesis wallets are slowly cashing out through the aggregator nodes, making it look like the oracle node network is being actively used (which it is, but it's not the end customers like AAVE/NEXO paying the LINK required to power oracles, it's SmartContract itself). I know that this is just ONE aggregator node, but I've seen the same behaviour from their other named nodes - go check for yourselves.
If you trace chainlink oracle funds to their source, you can find some of the original addresses. Some of these early on (around 1000 days ago) were linked to AfroDex labs, which looks like now doesn’t work. http://afrodex.net/#!/trade/AfroX-ETH
Who currently pays Chainlink nodes?
How much of the revenue that Chainlink nodes receive is from potentially third party customers vs internal funding by the Chainlink team wallets?
For example, this is the "Chainlink: LINK / USD Aggregator" wallet.
It has had a total 8,200 LINK deposited from 5 transactions in round amounts (on any of the below links, click the "Analytics" tab to see In/Out balance history), and has so far paid out ~5,156 LINK.
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x32dbd3214ac75223e27e575c53944307914f7a90
It typically pays ~10 wallets 0.16 Link each, a few times an hour, like so:
https://etherscan.io/tx/0x02c595981b935a57cfbe6170656181faac9a16d7a33a123930a716c4abec615a ($45 in ETH fees to transfer $22 worth of LINK, sounds like a lot of overheads)
Where does this aggregator wallet get its LINK funding from?
From ONLY here: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x27158157136384c713bc09a0a7ae81c8391d7f11 (current net balance ~50,000 LINK, total ~5,000,000 million in and out)
Which in turn gets it from ONLY these three, in HUGE amounts:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xf37c348b7d19b17b29cd5cfa64cfa48e2d6eb8db (6,000,000 LINK)
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xaf40738c6f940519516e043f924b8d05fc0292b8 (just a jump address into the one above, only 3 total tx)
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x1f9e26f1c050b5c018ab0e66fcae8e4394eb0165 (147,000 LINK)
the 0x1f9e2... one got its funding from:
  1. 6098.8 LINK from Binance about a year ago: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x161cdd891e04a77e0458a3ef65c563c4d2064cd6
  2. 12,600,000 from the genesis wallet through one jump address https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xdad22a85ef8310ef582b70e4051e543f3153e11f
  3. 13,000,000 from the 0xf37... wallet above
the 0xf37... in turn got its 50,000,000 (!) LINK from the genesis address which minted the original 1 billion tokens:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xf55037738604fddfc4043d12f25124e94d7d1780
So the 0x27158... wallet is basically a genesis wallet.
Now let's do the most popular feed on feeds.chain.link, the ETH/USD feed: https://feeds.chain.link/eth-usd, with a wallet address of: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xF79D6aFBb6dA890132F9D7c355e3015f15F3406F#tokenAnalytics
It was first funded in Jan 2020 and has been funded a total of 9 times for a total influx of 108,437.533 LINK, by:
  1. "Chainlink: Deployer" 10 LINK: https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x6f61507f902e1c22bcd7aa2c0452cd2212009b61
  2. The 0x27158... genesis-sourced wallet, 20,000 LINK
  3. An intermediary/middle very active wallet (which is 99.998% funded by the 0x27158... genesis-sourced wallet), 52,000 LINK https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x2f0acb9c5dd2a3511bc1d9d67258e5c9434ba569
  4. "Chainlink: Aggregator", 36,427.533 LINK, https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x79febf6b9f76853edbcbc913e6aae8232cfb9de9#tokenAnalytics
I manually traced EVERY single inbound transaction/source of funds for the above 4 (not counting #1 as 10 LINK is negligible). 2 & 3 are 99.99%+ genesis-funded, being ACTIVELY topped up by a genesis wallet, last tx 4 days ago, 500,000 LINK. #4 has been funded 36 times over the past year and a half (that's 36 manual exports and I did them all). They all come from the 0x27158..., 0x2f0acb..., and https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x1f9e26f1c050b5c018ab0e66fcae8e4394eb0165 (another address like the 0x2f0acb that I went through and checked EVERY SINGLE inbound source of funds, and it's also >99.9% genesis-funded - one tx from Binance for 6098 LINK out of a total ~6,560,000 inbound LINK from genesis wallets), and two other addresses linked to Binance (0x1b185c8611d157a67d9a9d5261b0d2bd52c0bb78, 10,000 LINK and 0x039ac18afe298747c51c85e7c8f0d67c327f3883, 1,000,000 LINK)
The 0x039ac... address funded the "Chainlink: Aggregator" address with 127,900 LINK, and the 0x1b185... with about ~9,600 LINK). So yes, it's technically possible that someone not related to Chainlink paid for the ETH / USD price feed because some funds do come from Binance. However, they only come from two distinct addresses. Surely for "240+" claimed partnerships, more than TWO would pay to use Chainlink's MOST POPULAR price feed? That is, unless they don't pay directly but to another address and then Chainlink covers this one from their own wallets. I will check if that's in line with Chainlink's whitepaper, but doesn't that throw doubt on the whole model of end-users paying to use oracles/aggregators, even if it's subsidized?
I provide you this much detail not to bore you but to show you that I went through BY HAND and checked every single source (detailed sources in Appendix B) of funds for the OFFICIAL, Chainlink-listed "ETH/USD" aggregator that's supposedly sponsored by 10 DeFi partners (Synthetix, LoopSpring, OpenLaw, 1inch, ParaSwap, MCDEX, FuturesSwap, DMM, Aave, The Force Protocol). Yet where are the transactions showing that those 10 partners have EVER paid for this ETH/USD oracle? Perhaps the data is there so what am I missing? This ETH/USD aggregator has transferred out ~76,000 LINK to I guess the data providers in increments of .33 LINK. It has 21 data providers responding. I will begin investigating the data providers themselves soon.
And those middle addresses like 0x1f9e26... and 0x2f0acb...? They have transferred out hundreds of thousands if not millions of LINK to exchanges. And that's just ONE price pair aggregator. Chainlink has around 40 of these (albeit this one's one of the more popular ones).

SNX / ETH aggregator is funded 100% by genesis-sourced wallets, only 3 inbound transactions:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xe23d1142de4e83c08bb048bcab54d50907390828

Some random examples (for later, ignore these for now) ***********
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x039ac18afe298747c51c85e7c8f0d67c327f3883 bought 1,000,000 LINK from Binance in Sept 12 & 15, 2019. (one of the possible funding sources for the ETH / USD aggregator example above)
This address got 500,000 LINK from 0x27158... and has distributed them into ~5-10,000 LINK wallets that haven't had any out transactions yet
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x5bcf3edc0bb7119e35f322ba40793b99d4620f1e
**************
Another example with an unnamed aggregator-node-like wallet that was only spun up 5 days ago, Aug 5:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x2cbfd29947f774b8cf338f776915e6fee052f236
It was funded 2,000 LINK SOLELY by the 0x27158... wallet and has so far paid out ~500 LINK in 0.43 LINK amounts to 9 wallets at a time. For example, this is one of the wallets it cashes out to:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x64fe692be4b42f4ac9d4617ab824e088350c11c2#tokenAnalytics
That wallet extremely consistently collects small amounts of LINK since Oct 2019. It must be a data provider because a lot of Chainlink named wallets pay it small amounts of LINK regularly. It has transferred out 20 times. The most recent transfer out:
https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0xc8c30fa803833dd1fd6dbcdd91ed0b301eff87cf which then immediately transferred to the named "1inch.exchange" wallet, so I assume this was a "cash-out" transaction. It has cashed out via this address a lot.
Granted, it also has transfer-out transactions that haven't (yet) ended up in an exchange wallet, eg https://etherscan.io/token/0x514910771af9ca656af840dff83e8264ecf986ca?a=0x88e5353a73f38f25a9611e6083de6f361f9b537b with a current balance of 3000 LINK. This could be a user's exchange wallet, ready to be sold, or could be something else. No way for me to tell as there are no out txs from it.

LINK overall transaction, volume, and tx fees

This is to understand how much $ moves through the LINK ecosystem through: nodes, data providers, reserve wallets, wallets linked to exchanges, others.
A typical aggregator node tx (payout?): https://etherscan.io/tx/0xef9e8e6dd94ebe9bbac8866f18c2ea0a07408ced1aa77fa04826043eaa55e772 This is their ETH/USD aggregator paying out 1 LINK to each of 21 addresses. Value of 21 LINK ~= $210. Total eth tx fees: .233 ETH (~$88.5, ~42% of the total tx value. If LINK was $4.2 instead of $10, the tx fees would be 100% of the value of the tx). Transactions like this happen every few minutes, and the payout amounts are most often 0.16, 0.66, 1.0, and 2.0 Link.
Chainlink’s node/job listing site, https://market.link, lists 86 nodes, 195 feeds, 801 jobs, ~1,080,000 job runs (I can’t tell if this is over the past 2 months or 1.5 years). Only 20 nodes have over 1000 job runs, and 62 nodes have ZERO runs. Usual job cost is listed as 0.1 link, but the overall payout to the nodes is 10-20 times this. The nodes then cash out usually through a few jump addresses to exchanges. Some quick maths: (being generous and assuming it’s 1mil jobs every 2 months = ~6mil link/year = $60,000,000 revenue a year. This is the most generous estimate towards link’s valuation I’ve found so far. If we ignore the below examples where on multi-node payouts the tx fees are more than the node revenue itself, then it’s almost in line with an over-valued (but real) big tech company.
For example, one of the latest CHF/USD job runs paid 0.1 LINK to 9 addresses (data providers?) - total $14.4 payout - and paid 0.065 ETH ($24.5) in fees. That’s a $10.1 LOSS on a $14.4 revenue: https://etherscan.io/tx/0xa6351bab810b6864bfebb0f6e1e3bde3c8856f8aac3ba769dd2e6d1a39c0d23f
Linkpool’s (one of the biggest node operators) “ETH-USD CryptoCompare” job costs 0.1 link and has 33 runs in the past 24 hours (once every ~44min), total ~78,000 runs since May 30 2019 (once every ~8min). https://market.link/jobs/64bb0845-c4e1-4681-8853-0b5aa7366101/runs (PS cryptocompare has a free API that does this. Not sure why it costs $1 at current link prices to access an API once)

Token distribution:

Top 100 wallets (0.05% of ~186,000 total) hold 83% of tokens. 8 wallets each hold over 1% of total, 58 hold over 0.1%. Of these 58, 9 are named exchange/lending pool wallets.
For comparison, for Tether (TUSD), the top 100 wallets (0.006% of ~1,651,000 total) hold 35.9% of the supply. 3 addresses hold over 1% of the supply and 135 hold over 0.1%. Of these 135, at least 15 are named exchange/lending pool wallets.
LINK’s market cap is $3.5B (or $10B fully diluted, if we count the foundedev-controlled tokens, which we should as there's nothing preventing them from being moved at a moment's notice). Tether’s is $6.9B. Tether has 10 times more addresses and less distribution inequality. Both LINK and Tether are ERC20 tokens, and even if we temporarily ignore any arguments related to management/roadmap/teams etc, Tether has a clear, currently functional, single use case: keep 1 USDT = $1 USD by printing/burning USDT (and yet as of April 2019, only 74% of Tether's market cap is backed by real funds - https://en.wikipedia.org/wiki/Tether_(cryptocurrency))). Given that Chainlink's market cap is now 50% bigger than Tether's, surely by now there's AT LEAST one clear, currently functional use case for LINK? What is it? Can we *see* it happening on-chain?

Chainlink’s actual deliverable products

"What do I currently get for my money if I buy LINK 1) as an investor and 2) as a tech business/startup thinking of using oracles?”
Codebase (Chainlink’s github has around 140-200,000 lines of code (not counting html/css). What else is not counted in this? Town crier? Proprietary code that we don't know about yet? How much CODING has Chainlink done other than what's on github?
Current network of oracles - only ~20 active nodes - are there many more than the ones listed on market.link and reputation.link? If so, would be nice to know about these if we're allowed!
Documentation - they have what seems like detailed instructions on how to launch and use oracle nodes (and much more, I haven't investigated yet) (TODO this part more - what else do they offer to me as an end consumer, and eg as a tech startup needing oracle services that I can’t code myself?)

Network utilization statistics:

Etherscan.io allows csv export of the first 5000 txs from each day. From Jul 31 to Aug 6 2020, I thus downloaded 30,000 tx from midnight every day to an average of 7:10am (so 24 hour totals are 3.34x these numbers if we assume the same network utilization throughout the day).
(Summary of all LINK token activity on the ETH blockchain from 31.07 to 06.08, first 5000 txs of each day (30k total) shown Appendix A comment below this post.)
If we GENEROUSLY assume that EVERY SINGLE transaction under 10.0 LINK is ACTUAL chainlink nodes doing ACTUAL work, that’s still under 0.1% of the LINK network’s total volume being used for ACTUAL ecosystem functioning. The rest is speculation, trading, node funding by foundedev wallets, or dumping to exchanges (anything I missed?)
Assuming the above, the entire turnover of the actual LINK network is currently (18,422 LINK) * ($10/LINK) * (3.34 as etherscan.io’s data only gives first 5000 tx per day which averages to 7:10am) * (52 wk/year) = USD $31,995,329 turnover a year.
Note: the below paragraph is old analysis using traditional stock market Price/Earnings ratios which several users have now pointed out isn't really applicable in crypto. I leave it for the record. Assuming all of that is profit (which it’s not given tx fees at the very least), LINK would need a PE ratio (Price/Earnings) of 100 times to justify its current (undiluted) valuation of $3.5 billion of 300 if you count the other 65% of tokens that haven’t been dumped by the founders/devs yet. For comparison, common PE ratios are 32 (facebook), 29 (google), 37 (uber), 20 (twitter on a good year), 10 (good hedge fund returning 10% annual).

Thoughts on DeFi & yield-farming - [TODO]

Why would exchanges who do their due diligence list LINK, let alone at a leverage? 1) that's their business, they take a cut of every transaction, overhyped or not, 2) they're not safe from listing openly bearish tokens like EIDOS (troll token that incentivized users to make FAKE transactions, response to EOS) https://www.coindesk.com/defi-yield-farming-comp-token-explained
The current ANNUAL yield on liquidity/yield farming is something like 2% on STABLE tokens like USDC and TETHER which at least have most of their supply backed by real-world assets. If Chainlink LINK staking is to be successful, they'll have to achieve at LEAST that same 2% at end-state. IF LINK is in bubble territory and drops, that's a lot of years at 2% waiting to recoup losses.

SmartContract Team & Past Projects

Normally I don't like focussing on people because it leads too easily to ad-hominem attacks on personality rather than on technology/numbers as I've done above, but I came across this and didn't like what I saw.
Steve Ellis, SmartContract's current CTO, co-founded and worked in "Secure Asset Exchange" from 2014 to 2016. They developed the NXT blockchain, issued 1,000,000,000 NXT tokens (remind you of anything?), NXT was listed end of 2013 and saw 3 quick 500%-1000% pumps and subsequent dumps in early in mid 2014, and then declined to . SecureAE officially shut down in Jan 2016. Then at some point a company called Jelurida acquired the rights to NXT (presumably after SecureAE?), then during the 2017 altcoin craze NXT pumped 300 times to a market cap of $1.8 BILLION and then dumped back down 100 times and now it's a dead project with a market cap of $13 million.
https://www.linkedin.com/in/steveellis0606/
https://trade.secureae.com/
https://coinmarketcap.com/currencies/nxt/
https://www.jelurida.com/news/lawsuit-against-apollo-license-violations
As an investor or business owner, would you invest/hire a company whose co-founders/CTO's last project was a total flop with a price history chart that's textbook pump-and-dump behaviour? (and in this case, we KNOW the end result - 99% losses for investors) If you're Google/Oracle/SWIFT/Intel, would you partner with them?

Open questions for the Chainlink community and investors:

  1. Network activity: Are there any other currently active chainlink nodes other than those listed on market.link and reputation.link? If so, is there a list of them with usage statistics? Do they use some other token than LINK and thus making simple analytics of the LINK ERC20 token not an accurate representation of Chainlink’s actual activity? If the nodes listed on the two sites above ARE currently the main nodes, then
  2. PR, partnership announcements: Why is the google tweet still pinned to the top of Chainlink’s twitter? Due to the frequently circulated Chainlink promotion material (https://chainlinkecosystem.com/) that lists Google as one of the key partners, this tweet being pinned is potentially misleading as there isn't anything in there to merit calling Google a "collaborator" or "partner" - just that blockchains/oracles *can* use Google's APIs (but so can most software in the world). Is there something else going on with the SmartContract-Google relationship that warrants calling Google a partner that we're simply not aware of yet?
  3. By buying LINK, what backs YOUR money: If you have bought and currently hold LINK tokens, how comfortable are you that the future promise of your investment growing is supported on verifiable business and technological grounds versus pure, parabolic hype? If after reading this post you still are, I kindly ask you to reply and show how even one of the points I provided is either incorrect or not applicable, and I will edit my post and include your feedback in the relevant section as I have already done from other users.
  4. What have I missed? Of course not 100% of what I've said is infallible truth. I am a real human, and I have plenty of biases and blind spots. Even if what I've provided is technically correct, there may be other much more important info that I've missed that eclipses what I've provided here. Ask yourself: if the current hype around LINK is indeed valid and points to a $100/$1000 future LINK price, then Where’s Chainlink’s missing financial/performance/usage evidence to justify LINK’s current valuation of $10+?

Conclusion

For your consideration, I have provided evidence with links that you can follow and verify, and draw your own conclusions. I have made my case as to why I believe the LINK token is currently priced much higher than evidence supports, and I ask you to peer-review my analysis and share your thoughts with me and with the wider LINK/crypto community.
Thank you for your time, I realize this is a long post. All questions and feedback welcome, feel free to comment or PM. I won't delete/censoblock (except for personal threats, safety considerations etc). I am a real human but I am not revealing my true identity for obvious privacy/harassment reasons.
(If anyone is wondering about my credentials ability to add 2+2 and work with basic spreadsheets: I have previously won a math competition in a USA state, I won an English-speaking country's physics olympiad, my university education is in mathematical physics/optimization engineering, and I worked for a few years in a global manufacturing company doing data analytics, obviously I'm not posting my CV here to verify that but I promise you it's the truth)
I’m not looking to spread neither FUD, nor blind faith, nor pure hype, and I want an honest transparent objective discussion. I personally believe more that LINK is overvalued, but my beliefs have evolved and may continue to do so as I research more and understand more about Chainlink, LINK, Ethereum, DeFi, and other related topics, and as I incorporate YOUR feedback. If you think I haven't disclosed something, ask.
As always, this is not financial advice and I am not liable for anything that may happen as a result of you reading this!
submitted by Stratocatter to CryptoCurrency [link] [comments]

APIs offered by brokers and data platforms

I’ve been looking for a broker that has an API for index futures and ideally also futures options. I’m looking to use the API to build a customized view of my risk based on balances, positions, and market conditions.
Searching the algotrading sub I found many API-related posts, but then when I actually read them and their comments, I found they’re often lacking in real substance. It turns out many brokers or data services that have APIs don’t actually support index futures and options via the API, and instead they focus on equities, forex, or cypto. So here’s the list of what I’ve found so far. This isn’t a review of these brokers or APIs and note that I have a specific application in mind (index futures and futures options). Perhaps you’re looking for an API for equities, or you just want data and not a broker, in which case there may be a few options. Also, I’m based in the US so I didn’t really look for brokers or platforms outside the US.
If you have experience with these APIs, please chime in with your thoughts. Also, I may have missed some brokers or platforms. If I did or if you see anything that needs correction please let me know.

Platform Notes
ADM Investor Services No API
Ally Invest Does not support futures instruments
Alpaca Only supports US Equities
Alpha Vantage Does not support futures instruments
AMP Broker with a huge number of platforms available including some with APIs
ApexFutures No API
Arcade Trader No API
AvaTrade Does not support futures instruments
Backtrader Not a data feed; otherwise looks cool but also looks like a one-man shop
Cannon Trading Broker with a variety of platforms, some have API access such as TT
Centerpoint No API
Charles Schwab API does not support futures instruments
Cobra No API
Daniels Trading No API
Discount Trading Broker with a variety of platforms including CQG, Rithmic, TT, some with APIs
Edge Clear Broker with a variety of platforms including CQG, Rithmic, TT, some with APIs
Eroom Now part of Dashprime. Offer a variety of APIs including CQG, TT, CBOE's Silexx, and others via FIX.
ETNA Trader Only supports equities, options (including multi-legs), ETFs, Mutual Funds (Forex with cryptocurrencies coming soon)
ETrade API seems robust but OAuth authorization needs to be refreshed via login once per 24 hours
Futures Online No API
Gain Capital Futures API available, based on .NET; unsure if they are open to retail clients
GFF Brokers Broker with a large number of platforms including some with API access
High Ridge Futures Broker with a variety of platforms including CQG, Rithmic, TT, some with APIs
iBroker API available; contact them for more info
IEX Cloud Looks great but does not support futures instruments
Infinity Futures JSON API available; contact them for more info
Interactive Brokers Client Web API looks promising if clunky
Intrinio Supports futures instruments but is expensive
Koyfin No API
Lightspeed C++ API available
Medved Trader Windows app with a streaming API to various data sources and brokers. See comment below about API beta access.
NinjaTrader Does not support futures options
Norgate Data Not a broker; supports futures data for $270/year
Oanda Forex only; API last updated in 2018
Optimus Futures Broker with a large number of available platforms including some with API access
Phillip Capital Broker with a large number of available platforms including some with API access
polygon.io Expensive but looks slick; does not support futures instruments
Quandl API looks solid; $49/monthly for personal use, does not allow distributing or sharing data; not a broker
Quantconnect Does not expose raw data
Quantopian Does not expose raw data
Quantower Software that connects to multiple brokers and data feeds; API to their software via C# interface
Saxo Markets Broker with extensively documented API
Stage 5 Trading API available through Trading Technologies
Straits Financial Broker with several platforms available including some with APIs such as CQG, R
Sweet Futures Broker with a large number of available platforms including some with API access
TastyWorks There's an unofficial Python API
TenQuant.io Does not support futures instruments
ThinkorSwim Does not support futures instruments via the API
Tiingo Free account tier but does not support futures instruments
TradePro Broker with a number of platforms available; unclear if any are available with API access
Tradier Free developer API account for delayed data but does not support futures instruments
TradeStation Nice looking API docs and supports futures instruments; requires opening an account and a minimum balance of $100k and there’s no trial available
TradeFutures4Less Broker with a variety of platforms including CQG, Rithmic, TT, some with APIs
TradingTechnologies API looks robust; pricing starts at $700/month
TradingView Does not expose data API
Tradovate Technologies API exists, documentation unknown; need to talk to their account team
Wedbush Futures Broker with several platforms offered, a few of which have API access
WEX .NET/COM only; pricing not disclosed on website
Xignite Pricing not disclosed on website but they do support futures instruments
Yahoo Finance API Available through RapidAPI or via direct access; but it’s discontinued and unreliable
Zaner Broker with a variety of platforms including CQG, Rithmic, TT, some with APIs

Wow, this list grew longer than I originally thought it would be. If you spot a mistake, please let me know and I’ll correct it.
Edit:
- added Lightspeed API - updated Dashprime to indicate some of the APIs available - added Medved Trader to table
submitted by theloniusmunch to thewallstreet [link] [comments]

High functioning porn addict (trigger warning)

I am a 28M; I started watching porn a tiny bit at 19/20. This story is going to be a bit crazy and I feel like a horrible damaged person quite a bit. Warning that it gets a little dark. Please stop reading whenever you want.
Pre-story: I lost my best friend in 7th grade when he showed me porn. I told my mom and she stopped letting me see him. I thought it was an evil thing and watching it was the worst thing you could do. I never even had the temptation to watch until I was 19/20.
Why I started: My computer got hacked and I lost $5,000 my Sophomore year of college. While trying to figure out what happened and to get better anti-virus software, the IT person accused me and basically told my mom that it was most likely adult/porn websites that caused it. I feel like my mom sided with him. I tried to tell him I don't go on those sites, and he repeated to my mom that it was almost certainly from porn. Then he told me some good antivirus software that should work.
I was upset over his accusation, upset over losing $5,000, and as a 19 year old virgin who did not even know what a vagina or sex looked like, and who had zero luck with women in college, I thought maybe I should just take a peak at porn. I was very lonely and stressed out trying to get straight A's in college. I looked up a lot of non-nude images for weeks before I built up the courage to look up a picture of a vagina. Oh how innocent I was.
I eventually followed a link to a porn site. Watched a little, then more, then more. I was a very good student who put all my self worth on my school grades. I would motivate myself to study with porn. Watch more when I got a good grade. Etc. Etc. I don't think I watched too much during this time period. I kept taking 18 credit hours per semester and did graduate with a 3.9+ gpa with 2 majors and a minor; basically top of most my STEM classes.
But by now I was depressed and burnt out. Mostly from classes, but also from a job, a sport I did well at, and the porn. I was constantly doing something. I had strived so hard for good grades and now everyone was pushing me to make money. After all my self worth came from grades, I had to switch it to money. I was so burned out it was hard to apply for jobs. I did get one a year after graduating, but i watched more and more porn as i lost more and more hope of finding a job that year. As a straight A perfect student who was unable to land any job for so long, I felt like a failure.
The job was extremely stressful and i started watching porn every day afterwards, eating dinner, going to bed and watching a little more to numb myself before going to work the next day. This continued for a year and a half. The job made me hate my life. The porn was not helping. I would stay up until 1 or 2 am watching it (2-3 hours per day) and being tired the next day at work. Oh well, I hated the job so i did not mind.
I was 24 years old now. Never had a kiss. Hardly a hug with a woman. I had done so good at school, was working a stressful job, but felt utterly alone, hated, and immense shame from the porn. I had saved up enough money that I decided to quit the job and travel the world for a year or two and try to regain some sanity. By now I was severely depressed and almost suicidal. Maybe travelling would help.
And that would have been fine. And it was. But I felt like i failed everyone. They were all expecting the super smart kid to be wildly successful at work. Then i just up and left and I could tell people started treating me like an unemployed loser. self esteem crashed even more. Depression was getting worse and worse and worse. I kept watching more and more porn up until the date I left to start travelling. The only way I could stop hating myself so much was to take the attitude of "I don't give a fuck what anyone thinks about me, no matter what". I had enough money saved up from work to coast for 3-5 years. By all objective measures I was successful and would have been fine taking a year off. But mentally I was all wrong, completely lonely and isolated, all I wanted was for one women to fall in love with me and go travelling with her for a year.
But I had no idea how to ask anyone out. Nobody seemed interested in me. So I made the wise (lol) decision of visiting a strip club. Maybe just try and talk to an attractive women and keep the conversation going. Maybe it would help with other woman. I had fun. Had no idea what a lapdance was, but got one of those. The closest a women had ever been to me. It was fun but expensive... and I went back a few more times while travelling.
Simultaneously my ultra-competitive fear of failure streak led me into trading cryptocurrencies obsessively. I monitored prices almost constantly. 60, 70, 80, 100 hours per week. My year of travelling ended up being 3 months of travel and 9 months of obsessively trading cryptocurrencies. Even more than 100 hours per week - Every waking moment of my life was on the computer analyzing markets. But it was stressful. I needed the porn. I would watch more and more. I was trading while watching porn. Trading while masturbating.
If I made a large amount, I would go to a strip club. If I was travelling in a country where prostitution was legal - well - I hired a prostitute. Didn't even have sex with them. Didn't want to lose my virginity to one. I was so stressed and mentally broken that I just needed somebody to hug. One of them straight up told me to stop watching porn. But I couldn't. I am sorry Natalia :(
These sexual distractions and the massive amounts of porn helped keep my mind off of trading on the exact moments I needed to not think about it. A convenient escape. I don't know if I would have done as well trading that year had I not had this distraction. That year i had multiple days making $5k+. That year I bragged to a stripper giving me a lapdance that I made $25k over the weekend. That year I traveled to 15 countries. That year a massage lady in asia gave me a happy ending massage and I begged her for another. That year I felt like i failed my parents/friends/extended family by quitting a shitty job. That year I stopped caring about what anyone thought about me. That year I barely escaped suicide. That year I turned $20k into $1 million from trading.
The following year I bought a house, a car, did more travelling. Watched way, way, way too much porn.
I felt so guilty over the porn. So guilty seeing strippers, cuddling with hookers, getting a hand job. I turned to femdom porn. The first one was funny - woman humiliating men. Clearly roleplay, for fun, a little bit silly. laughed the first time i saw one. But i needed it to be real. I needed women to tell me how much they hated me and I needed to believe it. I needed to feel like I had failed all women and let them destroy me. So I convinced myself they were real. POV femdom videos where they verbally shred me. Tell me to stay locked in my closet the entire weekend, tell me to drink a lot of alcohol, tell me to go broke for them and beg them to let me drink enough water to survive. Over and over I would watch these videos. Becoming sadder and sadder and sadder. Never able to actually cry. Just sadder and sadder and sadder. How badly I wanted to just cry for the first time in 5 years. Never anyone knowing what I was doing. The successful 25 year old millionaire.
I tried to hire a prostitute to verbally degrade me. She looked at me so sad, sitting naked before her, and told me "There is nothing about you I can humiliate". We cuddled instead. And I tried to cry. I went back to see her again. This time I wished to be tied up and tickle tortured. She laughed and agreed. I told her i liked it because it was the only thing that could make me smile. I saw her again one final time 6 months later. She remembered I liked to be tickled because it made me smile. I had forgotten why I liked it. But she remembered.
Went to a sex therapist. She said I needed to stop feeling guilty about porn, masturbation, about it all. Never wanted to hurt anyone. I hurt myself the most. Still watch a lot of porn but I am trying. Wrote a book about trading. Practice my sport 4 days a week. Trying to get back into studying for fun. Feeling less burned out and ready for something new. I have already seen all the (legal - never had any desire to see anything illegal) porn there is. Nothing else left to see is what i tell myself. But still watching it too much.
But maybe there is something left to salvage.
I was going to watch porn today. But i wrote this instead. Maybe tomorrow I will read it instead.
submitted by highfunctioningPA to PornAddiction [link] [comments]

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Great Reddit Scaling Bake-Off Public Proposal

Dragonchain Public Proposal TL;DR:

Dragonchain has demonstrated twice Reddit’s entire total daily volume (votes, comments, and posts per Reddit 2019 Year in Review) in a 24-hour demo on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. At the time, in January 2020, the entire cost of the demo was approximately $25K on a single system (transaction fees locked at $0.0001/txn). With current fees (lowest fee $0.0000025/txn), this would cost as little as $625.
Watch Joe walk through the entire proposal and answer questions on YouTube.
This proposal is also available on the Dragonchain blog.

Hello Reddit and Ethereum community!

I’m Joe Roets, Founder & CEO of Dragonchain. When the team and I first heard about The Great Reddit Scaling Bake-Off we were intrigued. We believe we have the solutions Reddit seeks for its community points system and we have them at scale.
For your consideration, we have submitted our proposal below. The team at Dragonchain and I welcome and look forward to your technical questions, philosophical feedback, and fair criticism, to build a scaling solution for Reddit that will empower its users. Because our architecture is unlike other blockchain platforms out there today, we expect to receive many questions while people try to grasp our project. I will answer all questions here in this thread on Reddit, and I've answered some questions in the stream on YouTube.
We have seen good discussions so far in the competition. We hope that Reddit’s scaling solution will emerge from The Great Reddit Scaling Bake-Off and that Reddit will have great success with the implementation.

Executive summary

Dragonchain is a robust open source hybrid blockchain platform that has proven to withstand the passing of time since our inception in 2014. We have continued to evolve to harness the scalability of private nodes, yet take full advantage of the security of public decentralized networks, like Ethereum. We have a live, operational, and fully functional Interchain network integrating Bitcoin, Ethereum, Ethereum Classic, and ~700 independent Dragonchain nodes. Every transaction is secured to Ethereum, Bitcoin, and Ethereum Classic. Transactions are immediately usable on chain, and the first decentralization is seen within 20 seconds on Dragon Net. Security increases further to public networks ETH, BTC, and ETC within 10 minutes to 2 hours. Smart contracts can be written in any executable language, offering full freedom to existing developers. We invite any developer to watch the demo, play with our SDK’s, review open source code, and to help us move forward. Dragonchain specializes in scalable loyalty & rewards solutions and has built a decentralized social network on chain, with very affordable transaction costs. This experience can be combined with the insights Reddit and the Ethereum community have gained in the past couple of months to roll out the solution at a rapid pace.

Response and PoC

In The Great Reddit Scaling Bake-Off post, Reddit has asked for a series of demonstrations, requirements, and other considerations. In this section, we will attempt to answer all of these requests.

Live Demo

A live proof of concept showing hundreds of thousands of transactions
On Jan 7, 2020, Dragonchain hosted a 24-hour live demonstration during which a quarter of a billion (250 million+) transactions executed fully on an operational network. Every single transaction on Dragonchain is decentralized immediately through 5 levels of Dragon Net, and then secured with combined proof on Bitcoin, Ethereum, Ethereum Classic, and Binance Chain, via Interchain. This means that every single transaction is secured by, and traceable to these networks. An attack on this system would require a simultaneous attack on all of the Interchained networks.
24 hours in 4 minutes (YouTube):
24 hours in 4 minutes
The demonstration was of a single business system, and any user is able to scale this further, by running multiple systems simultaneously. Our goals for the event were to demonstrate a consistent capacity greater than that of Visa over an extended time period.
Tooling to reproduce our demo is available here:
https://github.com/dragonchain/spirit-bomb

Source Code

Source code (for on & off-chain components as well tooling used for the PoC). The source code does not have to be shared publicly, but if Reddit decides to use a particular solution it will need to be shared with Reddit at some point.

Scaling

How it works & scales

Architectural Scaling

Dragonchain’s architecture attacks the scalability issue from multiple angles. Dragonchain is a hybrid blockchain platform, wherein every transaction is protected on a business node to the requirements of that business or purpose. A business node may be held completely private or may be exposed or replicated to any level of exposure desired.
Every node has its own blockchain and is independently scalable. Dragonchain established Context Based Verification as its consensus model. Every transaction is immediately usable on a trust basis, and in time is provable to an increasing level of decentralized consensus. A transaction will have a level of decentralization to independently owned and deployed Dragonchain nodes (~700 nodes) within seconds, and full decentralization to BTC and ETH within minutes or hours. Level 5 nodes (Interchain nodes) function to secure all transactions to public or otherwise external chains such as Bitcoin and Ethereum. These nodes scale the system by aggregating multiple blocks into a single Interchain transaction on a cadence. This timing is configurable based upon average fees for each respective chain. For detailed information about Dragonchain’s architecture, and Context Based Verification, please refer to the Dragonchain Architecture Document.

Economic Scaling

An interesting feature of Dragonchain’s network consensus is its economics and scarcity model. Since Dragon Net nodes (L2-L4) are independent staking nodes, deployment to cloud platforms would allow any of these nodes to scale to take on a large percentage of the verification work. This is great for scalability, but not good for the economy, because there is no scarcity, and pricing would develop a downward spiral and result in fewer verification nodes. For this reason, Dragonchain uses TIME as scarcity.
TIME is calculated as the number of Dragons held, multiplied by the number of days held. TIME influences the user’s access to features within the Dragonchain ecosystem. It takes into account both the Dragon balance and length of time each Dragon is held. TIME is staked by users against every verification node and dictates how much of the transaction fees are awarded to each participating node for every block.
TIME also dictates the transaction fee itself for the business node. TIME is staked against a business node to set a deterministic transaction fee level (see transaction fee table below in Cost section). This is very interesting in a discussion about scaling because it guarantees independence for business implementation. No matter how much traffic appears on the entire network, a business is guaranteed to not see an increased transaction fee rate.

Scaled Deployment

Dragonchain uses Docker and Kubernetes to allow the use of best practices traditional system scaling. Dragonchain offers managed nodes with an easy to use web based console interface. The user may also deploy a Dragonchain node within their own datacenter or favorite cloud platform. Users have deployed Dragonchain nodes on-prem on Amazon AWS, Google Cloud, MS Azure, and other hosting platforms around the world. Any executable code, anything you can write, can be written into a smart contract. This flexibility is what allows us to say that developers with no blockchain experience can use any code language to access the benefits of blockchain. Customers have used NodeJS, Python, Java, and even BASH shell script to write smart contracts on Dragonchain.
With Docker containers, we achieve better separation of concerns, faster deployment, higher reliability, and lower response times.
We chose Kubernetes for its self-healing features, ability to run multiple services on one server, and its large and thriving development community. It is resilient, scalable, and automated. OpenFaaS allows us to package smart contracts as Docker images for easy deployment.
Contract deployment time is now bounded only by the size of the Docker image being deployed but remains fast even for reasonably large images. We also take advantage of Docker’s flexibility and its ability to support any language that can run on x86 architecture. Any image, public or private, can be run as a smart contract using Dragonchain.

Flexibility in Scaling

Dragonchain’s architecture considers interoperability and integration as key features. From inception, we had a goal to increase adoption via integration with real business use cases and traditional systems.
We envision the ability for Reddit, in the future, to be able to integrate alternate content storage platforms or other financial services along with the token.
  • LBRY - To allow users to deploy content natively to LBRY
  • MakerDAO to allow users to lend small amounts backed by their Reddit community points.
  • STORJ/SIA to allow decentralized on chain storage of portions of content. These integrations or any other are relatively easy to integrate on Dragonchain with an Interchain implementation.

Cost

Cost estimates (on-chain and off-chain) For the purpose of this proposal, we assume that all transactions are on chain (posts, replies, and votes).
On the Dragonchain network, transaction costs are deterministic/predictable. By staking TIME on the business node (as described above) Reddit can reduce transaction costs to as low as $0.0000025 per transaction.
Dragonchain Fees Table

Getting Started

How to run it
Building on Dragonchain is simple and requires no blockchain experience. Spin up a business node (L1) in our managed environment (AWS), run it in your own cloud environment, or on-prem in your own datacenter. Clear documentation will walk you through the steps of spinning up your first Dragonchain Level 1 Business node.
Getting started is easy...
  1. Download Dragonchain’s dctl
  2. Input three commands into a terminal
  3. Build an image
  4. Run it
More information can be found in our Get started documents.

Architecture
Dragonchain is an open source hybrid platform. Through Dragon Net, each chain combines the power of a public blockchain (like Ethereum) with the privacy of a private blockchain.
Dragonchain organizes its network into five separate levels. A Level 1, or business node, is a totally private blockchain only accessible through the use of public/private keypairs. All business logic, including smart contracts, can be executed on this node directly and added to the chain.
After creating a block, the Level 1 business node broadcasts a version stripped of sensitive private data to Dragon Net. Three Level 2 Validating nodes validate the transaction based on guidelines determined from the business. A Level 3 Diversity node checks that the level 2 nodes are from a diverse array of locations. A Level 4 Notary node, hosted by a KYC partner, then signs the validation record received from the Level 3 node. The transaction hash is ledgered to the Level 5 public chain to take advantage of the hash power of massive public networks.
Dragon Net can be thought of as a “blockchain of blockchains”, where every level is a complete private blockchain. Because an L1 can send to multiple nodes on a single level, proof of existence is distributed among many places in the network. Eventually, proof of existence reaches level 5 and is published on a public network.

API Documentation

APIs (on chain & off)

SDK Source

Nobody’s Perfect

Known issues or tradeoffs
  • Dragonchain is open source and even though the platform is easy enough for developers to code in any language they are comfortable with, we do not have so large a developer community as Ethereum. We would like to see the Ethereum developer community (and any other communities) become familiar with our SDK’s, our solutions, and our platform, to unlock the full potential of our Ethereum Interchain. Long ago we decided to prioritize both Bitcoin and Ethereum Interchains. We envision an ecosystem that encompasses different projects to give developers the ability to take full advantage of all the opportunities blockchain offers to create decentralized solutions not only for Reddit but for all of our current platforms and systems. We believe that together we will take the adoption of blockchain further. We currently have additional Interchain with Ethereum Classic. We look forward to Interchain with other blockchains in the future. We invite all blockchains projects who believe in decentralization and security to Interchain with Dragonchain.
  • While we only have 700 nodes compared to 8,000 Ethereum and 10,000 Bitcoin nodes. We harness those 18,000 nodes to scale to extremely high levels of security. See Dragonchain metrics.
  • Some may consider the centralization of Dragonchain’s business nodes as an issue at first glance, however, the model is by design to protect business data. We do not consider this a drawback as these nodes can make any, none, or all data public. Depending upon the implementation, every subreddit could have control of its own business node, for potential business and enterprise offerings, bringing new alternative revenue streams to Reddit.

Costs and resources

Summary of cost & resource information for both on-chain & off-chain components used in the PoC, as well as cost & resource estimates for further scaling. If your PoC is not on mainnet, make note of any mainnet caveats (such as congestion issues).
Every transaction on the PoC system had a transaction fee of $0.0001 (one-hundredth of a cent USD). At 256MM transactions, the demo cost $25,600. With current operational fees, the same demonstration would cost $640 USD.
For the demonstration, to achieve throughput to mimic a worldwide payments network, we modeled several clients in AWS and 4-5 business nodes to handle the traffic. The business nodes were tuned to handle higher throughput by adjusting memory and machine footprint on AWS. This flexibility is valuable to implementing a system such as envisioned by Reddit. Given that Reddit’s daily traffic (posts, replies, and votes) is less than half that of our demo, we would expect that the entire Reddit system could be handled on 2-5 business nodes using right-sized containers on AWS or similar environments.
Verification was accomplished on the operational Dragon Net network with over 700 independently owned verification nodes running around the world at no cost to the business other than paid transaction fees.

Requirements

Scaling

This PoC should scale to the numbers below with minimal costs (both on & off-chain). There should also be a clear path to supporting hundreds of millions of users.
Over a 5 day period, your scaling PoC should be able to handle:
*100,000 point claims (minting & distributing points) *25,000 subscriptions *75,000 one-off points burning *100,000 transfers
During Dragonchain’s 24 hour demo, the above required numbers were reached within the first few minutes.
Reddit’s total activity is 9000% more than Ethereum’s total transaction level. Even if you do not include votes, it is still 700% more than Ethereum’s current volume. Dragonchain has demonstrated that it can handle 250 million transactions a day, and it’s architecture allows for multiple systems to work at that level simultaneously. In our PoC, we demonstrate double the full capacity of Reddit, and every transaction was proven all the way to Bitcoin and Ethereum.
Reddit Scaling on Ethereum

Decentralization

Solutions should not depend on any single third-party provider. We prefer solutions that do not depend on specific entities such as Reddit or another provider, and solutions with no single point of control or failure in off-chain components but recognize there are numerous trade-offs to consider
Dragonchain’s architecture calls for a hybrid approach. Private business nodes hold the sensitive data while the validation and verification of transactions for the business are decentralized within seconds and secured to public blockchains within 10 minutes to 2 hours. Nodes could potentially be controlled by owners of individual subreddits for more organic decentralization.
  • Billing is currently centralized - there is a path to federation and decentralization of a scaled billing solution.
  • Operational multi-cloud
  • Operational on-premises capabilities
  • Operational deployment to any datacenter
  • Over 700 independent Community Verification Nodes with proof of ownership
  • Operational Interchain (Interoperable to Bitcoin, Ethereum, and Ethereum Classic, open to more)

Usability Scaling solutions should have a simple end user experience.

Users shouldn't have to maintain any extra state/proofs, regularly monitor activity, keep track of extra keys, or sign anything other than their normal transactions
Dragonchain and its customers have demonstrated extraordinary usability as a feature in many applications, where users do not need to know that the system is backed by a live blockchain. Lyceum is one of these examples, where the progress of academy courses is being tracked, and successful completion of courses is rewarded with certificates on chain. Our @Save_The_Tweet bot is popular on Twitter. When used with one of the following hashtags - #please, #blockchain, #ThankYou, or #eternalize the tweet is saved through Eternal to multiple blockchains. A proof report is available for future reference. Other examples in use are DEN, our decentralized social media platform, and our console, where users can track their node rewards, view their TIME, and operate a business node.
Examples:

Transactions complete in a reasonable amount of time (seconds or minutes, not hours or days)
All transactions are immediately usable on chain by the system. A transaction begins the path to decentralization at the conclusion of a 5-second block when it gets distributed across 5 separate community run nodes. Full decentralization occurs within 10 minutes to 2 hours depending on which interchain (Bitcoin, Ethereum, or Ethereum Classic) the transaction hits first. Within approximately 2 hours, the combined hash power of all interchained blockchains secures the transaction.

Free to use for end users (no gas fees, or fixed/minimal fees that Reddit can pay on their behalf)
With transaction pricing as low as $0.0000025 per transaction, it may be considered reasonable for Reddit to cover transaction fees for users.
All of Reddit's Transactions on Blockchain (month)
Community points can be earned by users and distributed directly to their Reddit account in batch (as per Reddit minting plan), and allow users to withdraw rewards to their Ethereum wallet whenever they wish. Withdrawal fees can be paid by either user or Reddit. This model has been operating inside the Dragonchain system since 2018, and many security and financial compliance features can be optionally added. We feel that this capability greatly enhances user experience because it is seamless to a regular user without cryptocurrency experience, yet flexible to a tech savvy user. With regard to currency or token transactions, these would occur on the Reddit network, verified to BTC and ETH. These transactions would incur the $0.0000025 transaction fee. To estimate this fee we use the monthly active Reddit users statista with a 60% adoption rate and an estimated 10 transactions per month average resulting in an approximate $720 cost across the system. Reddit could feasibly incur all associated internal network charges (mining/minting, transfer, burn) as these are very low and controllable fees.
Reddit Internal Token Transaction Fees

Reddit Ethereum Token Transaction Fees
When we consider further the Ethereum fees that might be incurred, we have a few choices for a solution.
  1. Offload all Ethereum transaction fees (user withdrawals) to interested users as they wish to withdraw tokens for external use or sale.
  2. Cover Ethereum transaction fees by aggregating them on a timed schedule. Users would request withdrawal (from Reddit or individual subreddits), and they would be transacted on the Ethereum network every hour (or some other schedule).
  3. In a combination of the above, customers could cover aggregated fees.
  4. Integrate with alternate Ethereum roll up solutions or other proposals to aggregate minting and distribution transactions onto Ethereum.

Bonus Points

Users should be able to view their balances & transactions via a blockchain explorer-style interface
From interfaces for users who have no knowledge of blockchain technology to users who are well versed in blockchain terms such as those present in a typical block explorer, a system powered by Dragonchain has flexibility on how to provide balances and transaction data to users. Transactions can be made viewable in an Eternal Proof Report, which displays raw data along with TIME staking information and traceability all the way to Bitcoin, Ethereum, and every other Interchained network. The report shows fields such as transaction ID, timestamp, block ID, multiple verifications, and Interchain proof. See example here.
Node payouts within the Dragonchain console are listed in chronological order and can be further seen in either Dragons or USD. See example here.
In our social media platform, Dragon Den, users can see, in real-time, their NRG and MTR balances. See example here.
A new influencer app powered by Dragonchain, Raiinmaker, breaks down data into a user friendly interface that shows coin portfolio, redeemed rewards, and social scores per campaign. See example here.

Exiting is fast & simple
Withdrawing funds on Dragonchain’s console requires three clicks, however, withdrawal scenarios with more enhanced security features per Reddit’s discretion are obtainable.

Interoperability Compatibility with third party apps (wallets/contracts/etc) is necessary.
Proven interoperability at scale that surpasses the required specifications. Our entire platform consists of interoperable blockchains connected to each other and traditional systems. APIs are well documented. Third party permissions are possible with a simple smart contract without the end user being aware. No need to learn any specialized proprietary language. Any code base (not subsets) is usable within a Docker container. Interoperable with any blockchain or traditional APIs. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js. Please see our source code and API documentation.

Scaling solutions should be extensible and allow third parties to build on top of it Open source and extensible
APIs should be well documented and stable

Documentation should be clear and complete
For full documentation, explore our docs, SDK’s, Github repo’s, architecture documents, original Disney documentation, and other links or resources provided in this proposal.

Third-party permissionless integrations should be possible & straightforward Smart contracts are Docker based, can be written in any language, use full language (not subsets), and can therefore be integrated with any system including traditional system APIs. Simple is better. Learning an uncommon or proprietary language should not be necessary.
Advanced knowledge of mathematics, cryptography, or L2 scaling should not be required. Compatibility with common utilities & toolchains is expected.
Dragonchain business nodes and smart contracts leverage Docker to allow the use of literally any language or executable code. No proprietary language is necessary. We’ve witnessed relatively complex systems built by engineers with no blockchain or cryptocurrency experience. We’ve also demonstrated the creation of smart contracts within minutes built with BASH shell and Node.js.

Bonus

Bonus Points: Show us how it works. Do you have an idea for a cool new use case for Community Points? Build it!

TIME

Community points could be awarded to Reddit users based upon TIME too, whereas the longer someone is part of a subreddit, the more community points someone naturally gained, even if not actively commenting or sharing new posts. A daily login could be required for these community points to be credited. This grants awards to readers too and incentivizes readers to create an account on Reddit if they browse the website often. This concept could also be leveraged to provide some level of reputation based upon duration and consistency of contribution to a community subreddit.

Dragon Den

Dragonchain has already built a social media platform that harnesses community involvement. Dragon Den is a decentralized community built on the Dragonchain blockchain platform. Dragon Den is Dragonchain’s answer to fake news, trolling, and censorship. It incentivizes the creation and evaluation of quality content within communities. It could be described as being a shareholder of a subreddit or Reddit in its entirety. The more your subreddit is thriving, the more rewarding it will be. Den is currently in a public beta and in active development, though the real token economy is not live yet. There are different tokens for various purposes. Two tokens are Lair Ownership Rights (LOR) and Lair Ownership Tokens (LOT). LOT is a non-fungible token for ownership of a specific Lair. LOT will only be created and converted from LOR.
Energy (NRG) and Matter (MTR) work jointly. Your MTR determines how much NRG you receive in a 24-hour period. Providing quality content, or evaluating content will earn MTR.

Security. Users have full ownership & control of their points.
All community points awarded based upon any type of activity or gift, are secured and provable to all Interchain networks (currently BTC, ETH, ETC). Users are free to spend and withdraw their points as they please, depending on the features Reddit wants to bring into production.

Balances and transactions cannot be forged, manipulated, or blocked by Reddit or anyone else
Users can withdraw their balance to their ERC20 wallet, directly through Reddit. Reddit can cover the fees on their behalf, or the user covers this with a portion of their balance.

Users should own their points and be able to get on-chain ERC20 tokens without permission from anyone else
Through our console users can withdraw their ERC20 rewards. This can be achieved on Reddit too. Here is a walkthrough of our console, though this does not show the quick withdrawal functionality, a user can withdraw at any time. https://www.youtube.com/watch?v=aNlTMxnfVHw

Points should be recoverable to on-chain ERC20 tokens even if all third-parties involved go offline
If necessary, signed transactions from the Reddit system (e.g. Reddit + Subreddit) can be sent to the Ethereum smart contract for minting.

A public, third-party review attesting to the soundness of the design should be available
To our knowledge, at least two large corporations, including a top 3 accounting firm, have conducted positive reviews. These reviews have never been made public, as Dragonchain did not pay or contract for these studies to be released.

Bonus points
Public, third-party implementation review available or in progress
See above

Compatibility with HSMs & hardware wallets
For the purpose of this proposal, all tokenization would be on the Ethereum network using standard token contracts and as such, would be able to leverage all hardware wallet and Ethereum ecosystem services.

Other Considerations

Minting/distributing tokens is not performed by Reddit directly
This operation can be automated by smart contract on Ethereum. Subreddits can if desired have a role to play.

One off point burning, as well as recurring, non-interactive point burning (for subreddit memberships) should be possible and scalable
This is possible and scalable with interaction between Dragonchain Reddit system and Ethereum token contract(s).

Fully open-source solutions are strongly preferred
Dragonchain is fully open source (see section on Disney release after conclusion).

Conclusion

Whether it is today, or in the future, we would like to work together to bring secure flexibility to the highest standards. It is our hope to be considered by Ethereum, Reddit, and other integrative solutions so we may further discuss the possibilities of implementation. In our public demonstration, 256 million transactions were handled in our operational network on chain in 24 hours, for the low cost of $25K, which if run today would cost $625. Dragonchain’s interoperable foundation provides the atmosphere necessary to implement a frictionless community points system. Thank you for your consideration of our proposal. We look forward to working with the community to make something great!

Disney Releases Blockchain Platform as Open Source

The team at Disney created the Disney Private Blockchain Platform. The system was a hybrid interoperable blockchain platform for ledgering and smart contract development geared toward solving problems with blockchain adoption and usability. All objective evaluation would consider the team’s output a success. We released a list of use cases that we explored in some capacity at Disney, and our input on blockchain standardization as part of our participation in the W3C Blockchain Community Group.
https://lists.w3.org/Archives/Public/public-blockchain/2016May/0052.html

Open Source

In 2016, Roets proposed to release the platform as open source to spread the technology outside of Disney, as others within the W3C group were interested in the solutions that had been created inside of Disney.
Following a long process, step by step, the team met requirements for release. Among the requirements, the team had to:
  • Obtain VP support and approval for the release
  • Verify ownership of the software to be released
  • Verify that no proprietary content would be released
  • Convince the organization that there was a value to the open source community
  • Convince the organization that there was a value to Disney
  • Offer the plan for ongoing maintenance of the project outside of Disney
  • Itemize competing projects
  • Verify no conflict of interest
  • Preferred license
  • Change the project name to not use the name Disney, any Disney character, or any other associated IP - proposed Dragonchain - approved
  • Obtain legal approval
  • Approval from corporate, parks, and other business units
  • Approval from multiple Disney patent groups Copyright holder defined by Disney (Disney Connected and Advanced Technologies)
  • Trademark searches conducted for the selected name Dragonchain
  • Obtain IT security approval
  • Manual review of OSS components conducted
  • OWASP Dependency and Vulnerability Check Conducted
  • Obtain technical (software) approval
  • Offer management, process, and financial plans for the maintenance of the project.
  • Meet list of items to be addressed before release
  • Remove all Disney project references and scripts
  • Create a public distribution list for email communications
  • Remove Roets’ direct and internal contact information
  • Create public Slack channel and move from Disney slack channels
  • Create proper labels for issue tracking
  • Rename internal private Github repository
  • Add informative description to Github page
  • Expand README.md with more specific information
  • Add information beyond current “Blockchains are Magic”
  • Add getting started sections and info on cloning/forking the project
  • Add installation details
  • Add uninstall process
  • Add unit, functional, and integration test information
  • Detail how to contribute and get involved
  • Describe the git workflow that the project will use
  • Move to public, non-Disney git repository (Github or Bitbucket)
  • Obtain Disney Open Source Committee approval for release
On top of meeting the above criteria, as part of the process, the maintainer of the project had to receive the codebase on their own personal email and create accounts for maintenance (e.g. Github) with non-Disney accounts. Given the fact that the project spanned multiple business units, Roets was individually responsible for its ongoing maintenance. Because of this, he proposed in the open source application to create a non-profit organization to hold the IP and maintain the project. This was approved by Disney.
The Disney Open Source Committee approved the application known as OSSRELEASE-10, and the code was released on October 2, 2016. Disney decided to not issue a press release.
Original OSSRELASE-10 document

Dragonchain Foundation

The Dragonchain Foundation was created on January 17, 2017. https://den.social/l/Dragonchain/24130078352e485d96d2125082151cf0/dragonchain-and-disney/
submitted by j0j0r0 to ethereum [link] [comments]

Don't blindly follow a narrative, its bad for you and its bad for crypto in general

I mostly lurk around here but I see a pattern repeating over and over again here and in multiple communities so I have to post. I'm just posting this here because I appreciate the fact that this sub is a place of free speech and maybe something productive can come out from this post, while bitcoin is just fucking censorship, memes and moon/lambo posts. If you don't agree, write in the comments why, instead of downvoting. You don't have to upvote either, but when you downvote you are killing the opportunity to have discussion. If you downvote or comment that I'm wrong without providing any counterpoints you are no better than the BTC maxis you despise.
In various communities I see a narrative being used to bring people in and making them follow something without thinking for themselves. In crypto I see this mostly in BTC vs BCH tribalistic arguments:
- BTC community: "Everything that is not BTC is shitcoin." or more recently as stated by adam on twitter, "Everything that is not BTC is a ponzi scheme, even ETH.", "what is ETH supply?", and even that they are doing this for "altruistic" reasons, to "protect" the newcomers. Very convenient for them that they are protecting the newcomers by having them buy their bags
- BCH community: "BTC maxis are dumb", "just increase block size and you will have truly p2p electronic cash", "It is just that simple, there are no trade offs", "if you don't agree with me you are a BTC maxi", "BCH is satoshi's vision for p2p electronic cash"
It is not exclusive to crypto but also politics, and you see this over and over again on twitter and on reddit.
My point is, that narratives are created so people don't have to think, they just choose a narrative that is easy to follow and makes sense for them, and stick with it. And people keep repeating these narratives to bring other people in, maybe by ignorance, because they truly believe it without questioning, or maybe by self interest, because they want to shill you their bags.
Because this is BCH community, and because bitcoin is censored, so I can't post there about the problems in the BTC narrative (some of which are IMO correctly identified by BCH community), I will stick with the narrative I see in the BCH community.
The culprit of this post was firstly this post by user u/scotty321 "The BTC Paradox: “A 1 MB blocksize enables poor people to run their own node!” “Okay, then what?” “Poor people won’t be able to use the network!”". You will see many posts of this kind being made by u/Egon_1 also. Then you have also this comment in that thread by u/fuck_____________1 saying that people that want to run their own nodes are retarded and that there is no reason to want to do that. "Just trust block explorer websites". And the post and comment were highly upvoted. Really? You really think that there is no problem in having just a few nodes on the network? And that the only thing that secures the network are miners?
As stated by user u/co1nsurf3r in that thread:
While I don't think that everybody needs to run a node, a full node does publish blocks it considers valid to other nodes. This does not amount to much if you only consider a single node in the network, but many "honest" full nodes in the network will reduce the probability of a valid block being withheld from the network by a collusion of "hostile" node operators.
But surely this will not get attention here, and will be downvoted by those people that promote the narrative that there is no trade off in increasing the blocksize and the people that don't see it are retarded or are btc maxis.
The only narrative I stick to and have been for many years now is that cryptocurrency takes power from the government and gives power to the individual, so you are not restricted to your economy as you can participate in the global economy. There is also the narrative of banking the bankless, which I hope will come true, but it is not a use case we are seeing right now.
Some people would argue that removing power from gov's is a bad thing, but you can't deny the fact that gov's can't control crypto (at least we would want them not to).
But, if you really want the individuals to remain in control of their money and transact with anyone in the world, the network needs to be very resistant to any kind of attacks. How can you have p2p electronic cash if your network just has a handful couple of nodes and the chinese gov can locate them and just block communication to them? I'm not saying that this is BCH case, I'm just refuting the fact that there is no value in running your own node. If you are relying on block explorers, the gov can just block the communication to the block explorer websites. Then what? Who will you trust to get chain information? The nodes needs to be decentralized so if you take one node down, many more can appear so it is hard to censor and you don't have few points of failure.
Right now BTC is focusing on that use case of being difficult to censor. But with that comes the problem that is very expensive to transact on the network, which breaks the purpose of anyone being able to participate. Obviously I do think that is also a major problem, and lightning network is awful right now and probably still years away of being usable, if it ever will. The best solution is up for debate, but thinking that you just have to increase the blocksize and there is no trade off is just naive or misleading. BCH is doing a good thing in trying to come with a solution that is inclusive and promotes cheap and fast transactions, but also don't forget centralization is a major concern and nothing to just shrug off.
Saying that "a 1 MB blocksize enables poor people to run their own" and that because of that "Poor people won’t be able to use the network" is a misrepresentation designed to promote a narrative. Because 1MB is not to allow "poor" people to run their node, it is to facilitate as many people to run a node to promote decentralization and avoid censorship.
Also an elephant in the room that you will not see being discussed in either BTC or BCH communities is that mining pools are heavily centralized. And I'm not talking about miners being mostly in china, but also that big pools control a lot of hashing power both in BTC and BCH, and that is terrible for the purpose of crypto.
Other projects are trying to solve that. Will they be successful? I don't know, I hope so, because I don't buy into any narrative. There are many challenges and I want to see crypto succeed as a whole. As always guys, DYOR and always question if you are not blindly following a narrative. I'm sure I will be called BTC maxi but maybe some people will find value in this. Don't trust guys that are always posting silly "gocha's" against the other "tribe".
EDIT: User u/ShadowOfHarbringer has pointed me to some threads that this has been discussed in the past and I will just put my take on them here for visibility, as I will be using this thread as a reference in future discussions I engage:
When there was only 2 nodes in the network, adding a third node increased redundancy and resiliency of the network as a whole in a significant way. When there is thousands of nodes in the network, adding yet another node only marginally increase the redundancy and resiliency of the network. So the question then becomes a matter of personal judgement of how much that added redundancy and resiliency is worth. For the absolutist, it is absolutely worth it and everyone on this planet should do their part.
What is the magical number of nodes that makes it counterproductive to add new nodes? Did he do any math? Does BCH achieve this holy grail safe number of nodes? Guess what, nobody knows at what number of nodes is starts to be marginally irrelevant to add new nodes. Even BTC today could still not have enough nodes to be safe. If you can't know for sure that you are safe, it is better to try to be safer than sorry. Thousands of nodes is still not enough, as I said, it is much cheaper to run a full node as it is to mine. If it costs millions in hash power to do a 51% attack on the block generation it means nothing if it costs less than $10k to run more nodes than there are in total in the network and cause havoc and slowing people from using the network. Or using bot farms to DDoS the 1000s of nodes in the network. Not all attacks are monetarily motivated. When you have governments with billions of dollars at their disposal and something that could threat their power they could do anything they could to stop people from using it, and the cheapest it is to do so the better
You should run a full node if you're a big business with e.g. >$100k/month in volume, or if you run a service that requires high fraud resistance and validation certainty for payments sent your way (e.g. an exchange). For most other users of Bitcoin, there's no good reason to run a full node unless you reel like it.
Shouldn't individuals benefit from fraud resistance too? Why just businesses?
Personally, I think it's a good idea to make sure that people can easily run a full node because they feel like it, and that it's desirable to keep full node resource requirements reasonable for an enthusiast/hobbyist whenever possible. This might seem to be at odds with the concept of making a worldwide digital cash system in which all transactions are validated by everybody, but after having done the math and some of the code myself, I believe that we should be able to have our cake and eat it too.
This is recurrent argument, but also no math provided, "just trust me I did the math"
The biggest reason individuals may want to run their own node is to increase their privacy. SPV wallets rely on others (nodes or ElectronX servers) who may learn their addresses.
It is a reason and valid one but not the biggest reason
If you do it for fun and experimental it good. If you do it for extra privacy it's ok. If you do it to help the network don't. You are just slowing down miners and exchanges.
Yes it will slow down the network, but that shows how people just don't get the the trade off they are doing
I will just copy/paste what Satoshi Nakamoto said in his own words. "The current system where every user is a network node is not the intended configuration for large scale. That would be like every Usenet user runs their own NNTP server."
Another "it is all or nothing argument" and quoting satoshi to try and prove their point. Just because every user doesn't need to be also a full node doesn't mean that there aren't serious risks for having few nodes
For this to have any importance in practice, all of the miners, all of the exchanges, all of the explorers and all of the economic nodes should go rogue all at once. Collude to change consensus. If you have a node you can detect this. It doesn't do much, because such a scenario is impossible in practice.
Not true because as I said, you can DDoS the current nodes or run more malicious nodes than that there currently are, because is cheap to do so
Non-mining nodes don't contribute to adding data to the blockchain ledger, but they do play a part in propagating transactions that aren't yet in blocks (the mempool). Bitcoin client implementations can have different validations for transactions they see outside of blocks and transactions they see inside of blocks; this allows for "soft forks" to add new types of transactions without completely breaking older clients (while a transaction is in the mempool, a node receiving a transaction that's a new/unknown type could drop it as not a valid transaction (not propagate it to its peers), but if that same transaction ends up in a block and that node receives the block, they accept the block (and the transaction in it) as valid (and therefore don't get left behind on the blockchain and become a fork). The participation in the mempool is a sort of "herd immunity" protection for the network, and it was a key talking point for the "User Activated Soft Fork" (UASF) around the time the Segregated Witness feature was trying to be added in. If a certain percentage of nodes updated their software to not propagate certain types of transactions (or not communicate with certain types of nodes), then they can control what gets into a block (someone wanting to get that sort of transaction into a block would need to communicate directly to a mining node, or communicate only through nodes that weren't blocking that sort of transaction) if a certain threshold of nodes adheres to those same validation rules. It's less specific than the influence on the blockchain data that mining nodes have, but it's definitely not nothing.
The first reasonable comment in that thread but is deep down there with only 1 upvote
The addition of non-mining nodes does not add to the efficiency of the network, but actually takes away from it because of the latency issue.
That is true and is actually a trade off you are making, sacrificing security to have scalability
The addition of non-mining nodes has little to no effect on security, since you only need to destroy mining ones to take down the network
It is true that if you destroy mining nodes you take down the network from producing new blocks (temporarily), even if you have a lot of non mining nodes. But, it still better than if you take down the mining nodes who are also the only full nodes. If the miners are not the only full nodes, at least you still have full nodes with the blockchain data so new miners can download it and join. If all the miners are also the full nodes and you take them down, where will you get all the past blockchain data to start mining again? Just pray that the miners that were taken down come back online at some point in the future?
The real limiting factor is ISP's: Imagine a situation where one service provider defrauds 4000 different nodes. Did the excessive amount of nodes help at all, when they have all been defrauded by the same service provider? If there are only 30 ISP's in the world, how many nodes do we REALLY need?
You cant defraud if the connection is encrypted. Use TOR for example, it is hard for ISP's to know what you are doing.
Satoshi specifically said in the white paper that after a certain point, number of nodes needed plateaus, meaning after a certain point, adding more nodes is actually counterintuitive, which we also demonstrated. (the latency issue). So, we have adequately demonstrated why running non-mining nodes does not add additional value or security to the network.
Again, what is the number of nodes that makes it counterproductive? Did he do any math?
There's also the matter of economically significant nodes and the role they play in consensus. Sure, nobody cares about your average joe's "full node" where he is "keeping his own ledger to keep the miners honest", as it has no significance to the economy and the miners couldn't give a damn about it. However, if say some major exchanges got together to protest a miner activated fork, they would have some protest power against that fork because many people use their service. Of course, there still needs to be miners running on said "protest fork" to keep the chain running, but miners do follow the money and if they got caught mining a fork that none of the major exchanges were trading, they could be coaxed over to said "protest fork".
In consensus, what matters about nodes is only the number, economical power of the node doesn't mean nothing, the protocol doesn't see the net worth of the individual or organization running that node.
Running a full node that is not mining and not involved is spending or receiving payments is of very little use. It helps to make sure network traffic is broadcast, and is another copy of the blockchain, but that is all (and is probably not needed in a healthy coin with many other nodes)
He gets it right (broadcasting transaction and keeping a copy of the blockchain) but he dismisses the importance of it
submitted by r0bo7 to btc [link] [comments]

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31
Submitted for consideration to The Great Reddit Scaling Bake-Off
Baked by the pastry chefs at Offchain Labs
Please send questions or comments to [[email protected]hainlabs.com ](mailto:[email protected])
1. Overview
We're excited to submit Arbitrum Rollup for consideration to The Great Reddit Scaling Bake-Off. Arbitrum Rollup is the only Ethereum scaling solution that supports arbitrary smart contracts without compromising on Ethereum's security or adding points of centralization. For Reddit, this means that Arbitrum can not only scale the minting and transfer of Community Points, but it can foster a creative ecosystem built around Reddit Community Points enabling points to be used in a wide variety of third party applications. That's right -- you can have your cake and eat it too!
Arbitrum Rollup isn't just Ethereum-style. Its Layer 2 transactions are byte-for-byte identical to Ethereum, which means Ethereum users can continue to use their existing addresses and wallets, and Ethereum developers can continue to use their favorite toolchains and development environments out-of-the-box with Arbitrum. Coupling Arbitrum’s tooling-compatibility with its trustless asset interoperability, Reddit not only can scale but can onboard the entire Ethereum community at no cost by giving them the same experience they already know and love (well, certainly know).
To benchmark how Arbitrum can scale Reddit Community Points, we launched the Reddit contracts on an Arbitrum Rollup chain. Since Arbitrum provides full Solidity support, we didn't have to rewrite the Reddit contracts or try to mimic their functionality using an unfamiliar paradigm. Nope, none of that. We launched the Reddit contracts unmodified on Arbitrum Rollup complete with support for minting and distributing points. Like every Arbitrum Rollup chain, the chain included a bridge interface in which users can transfer Community Points or any other asset between the L1 and L2 chains. Arbitrum Rollup chains also support dynamic contract loading, which would allow third-party developers to launch custom ecosystem apps that integrate with Community Points on the very same chain that runs the Reddit contracts.
1.1 Why Ethereum
Perhaps the most exciting benefit of distributing Community Points using a blockchain is the ability to seamlessly port points to other applications and use them in a wide variety of contexts. Applications may include simple transfers such as a restaurant that allows Redditors to spend points on drinks. Or it may include complex smart contracts -- such as placing Community Points as a wager for a multiparty game or as collateral in a financial contract.
The common denominator between all of the fun uses of Reddit points is that it needs a thriving ecosystem of both users and developers, and the Ethereum blockchain is perhaps the only smart contract platform with significant adoption today. While many Layer 1 blockchains boast lower cost or higher throughput than the Ethereum blockchain, more often than not, these attributes mask the reality of little usage, weaker security, or both.
Perhaps another platform with significant usage will rise in the future. But today, Ethereum captures the mindshare of the blockchain community, and for Community Points to provide the most utility, the Ethereum blockchain is the natural choice.
1.2 Why Arbitrum
While Ethereum's ecosystem is unmatched, the reality is that fees are high and capacity is too low to support the scale of Reddit Community Points. Enter Arbitrum. Arbitrum Rollup provides all of the ecosystem benefits of Ethereum, but with orders of magnitude more capacity and at a fraction of the cost of native Ethereum smart contracts. And most of all, we don't change the experience from users. They continue to use the same wallets, addresses, languages, and tools.
Arbitrum Rollup is not the only solution that can scale payments, but it is the only developed solution that can scale both payments and arbitrary smart contracts trustlessly, which means that third party users can build highly scalable add-on apps that can be used without withdrawing money from the Rollup chain. If you believe that Reddit users will want to use their Community Points in smart contracts--and we believe they will--then it makes the most sense to choose a single scaling solution that can support the entire ecosystem, eliminating friction for users.
We view being able to run smart contracts in the same scaling solution as fundamentally critical since if there's significant demand in running smart contracts from Reddit's ecosystem, this would be a load on Ethereum and would itself require a scaling solution. Moreover, having different scaling solutions for the minting/distribution/spending of points and for third party apps would be burdensome for users as they'd have to constantly shuffle their Points back and forth.
2. Arbitrum at a glance
Arbitrum Rollup has a unique value proposition as it offers a combination of features that no other scaling solution achieves. Here we highlight its core attributes.
Decentralized. Arbitrum Rollup is as decentralized as Ethereum. Unlike some other Layer 2 scaling projects, Arbitrum Rollup doesn't have any centralized components or centralized operators who can censor users or delay transactions. Even in non-custodial systems, centralized components provide a risk as the operators are generally incentivized to increase their profit by extracting rent from users often in ways that severely degrade user experience. Even if centralized operators are altruistic, centralized components are subject to hacking, coercion, and potential liability.
Massive Scaling. Arbitrum achieves order of magnitude scaling over Ethereum's L1 smart contracts. Our software currently supports 453 transactions-per-second for basic transactions (at 1616 Ethereum gas per tx). We have a lot of room left to optimize (e.g. aggregating signatures), and over the next several months capacity will increase significantly. As described in detail below, Arbitrum can easily support and surpass Reddit's anticipated initial load, and its capacity will continue to improve as Reddit's capacity needs grow.
Low cost. The cost of running Arbitrum Rollup is quite low compared to L1 Ethereum and other scaling solutions such as those based on zero-knowledge proofs. Layer 2 fees are low, fixed, and predictable and should not be overly burdensome for Reddit to cover. Nobody needs to use special equipment or high-end machines. Arbitrum requires validators, which is a permissionless role that can be run on any reasonable on-line machine. Although anybody can act as a validator, in order to protect against a “tragedy of the commons” and make sure reputable validators are participating, we support a notion of “invited validators” that are compensated for their costs. In general, users pay (low) fees to cover the invited validators’ costs, but we imagine that Reddit may cover this cost for its users. See more on the costs and validator options below.
Ethereum Developer Experience. Not only does Arbitrum support EVM smart contracts, but the developer experience is identical to that of L1 Ethereum contracts and fully compatible with Ethereum tooling. Developers can port existing Solidity apps or write new ones using their favorite and familiar toolchains (e.g. Truffle, Buidler). There are no new languages or coding paradigms to learn.
Ethereum wallet compatibility. Just as in Ethereum, Arbitrum users need only hold keys, but do not have to store any coin history or additional data to protect or access their funds. Since Arbitrum transactions are semantically identical to Ethereum L1 transactions, existing Ethereum users can use their existing Ethereum keys with their existing wallet software such as Metamask.
Token interoperability. Users can easily transfer their ETH, ERC-20 and ERC-721 tokens between Ethereum and the Arbitrum Rollup chain. As we explain in detail below, it is possible to mint tokens in L2 that can subsequently be withdrawn and recognized by the L1 token contract.
Fast finality. Transactions complete with the same finality time as Ethereum L1 (and it's possible to get faster finality guarantees by trading away trust assumptions; see the Arbitrum Rollup whitepaper for details).
Non-custodial. Arbitrum Rollup is a non-custodial scaling solution, so users control their funds/points and neither Reddit nor anyone else can ever access or revoke points held by users.
Censorship Resistant. Since it's completely decentralized, and the Arbitrum protocol guarantees progress trustlessly, Arbitrum Rollup is just as censorship-proof as Ethereum.
Block explorer. The Arbitrum Rollup block explorer allows users to view and analyze transactions on the Rollup chain.
Limitations
Although this is a bake-off, we're not going to sugar coat anything. Arbitrum Rollup, like any Optimistic Rollup protocol, does have one limitation, and that's the delay on withdrawals.
As for the concrete length of the delay, we've done a good deal of internal modeling and have blogged about this as well. Our current modeling suggests a 3-hour delay is sufficient (but as discussed in the linked post there is a tradeoff space between the length of the challenge period and the size of the validators’ deposit).
Note that this doesn't mean that the chain is delayed for three hours. Arbitrum Rollup supports pipelining of execution, which means that validators can keep building new states even while previous ones are “in the pipeline” for confirmation. As the challenge delays expire for each update, a new state will be confirmed (read more about this here).
So activity and progress on the chain are not delayed by the challenge period. The only thing that's delayed is the consummation of withdrawals. Recall though that any single honest validator knows immediately (at the speed of L1 finality) which state updates are correct and can guarantee that they will eventually be confirmed, so once a valid withdrawal has been requested on-chain, every honest party knows that the withdrawal will definitely happen. There's a natural place here for a liquidity market in which a validator (or someone who trusts a validator) can provide withdrawal loans for a small interest fee. This is a no-risk business for them as they know which withdrawals will be confirmed (and can force their confirmation trustlessly no matter what anyone else does) but are just waiting for on-chain finality.
3. The recipe: How Arbitrum Rollup works
For a description of the technical components of Arbitrum Rollup and how they interact to create a highly scalable protocol with a developer experience that is identical to Ethereum, please refer to the following documents:
Arbitrum Rollup Whitepaper
Arbitrum academic paper (describes a previous version of Arbitrum)
4. Developer docs and APIs
For full details about how to set up and interact with an Arbitrum Rollup chain or validator, please refer to our developer docs, which can be found at https://developer.offchainlabs.com/.
Note that the Arbitrum version described on that site is older and will soon be replaced by the version we are entering in Reddit Bake-Off, which is still undergoing internal testing before public release.
5. Who are the validators?
As with any Layer 2 protocol, advancing the protocol correctly requires at least one validator (sometimes called block producers) that is honest and available. A natural question is: who are the validators?
Recall that the validator set for an Arbitrum chain is open and permissionless; anyone can start or stop validating at will. (A useful analogy is to full nodes on an L1 chain.) But we understand that even though anyone can participate, Reddit may want to guarantee that highly reputable nodes are validating their chain. Reddit may choose to validate the chain themselves and/or hire third-party validators.To this end, we have begun building a marketplace for validator-for-hire services so that dapp developers can outsource validation services to reputable nodes with high up-time. We've announced a partnership in which Chainlink nodes will provide Arbitrum validation services, and we expect to announce more partnerships shortly with other blockchain infrastructure providers.
Although there is no requirement that validators are paid, Arbitrum’s economic model tracks validators’ costs (e.g. amount of computation and storage) and can charge small fees on user transactions, using a gas-type system, to cover those costs. Alternatively, a single party such as Reddit can agree to cover the costs of invited validators.
6. Reddit Contract Support
Since Arbitrum contracts and transactions are byte-for-byte compatible with Ethereum, supporting the Reddit contracts is as simple as launching them on an Arbitrum chain.
Minting. Arbitrum Rollup supports hybrid L1/L2 tokens which can be minted in L2 and then withdrawn onto the L1. An L1 contract at address A can make a special call to the EthBridge which deploys a "buddy contract" to the same address A on an Arbitrum chain. Since it's deployed at the same address, users can know that the L2 contract is the authorized "buddy" of the L1 contract on the Arbitrum chain.
For minting, the L1 contract is a standard ERC-20 contract which mints and burns tokens when requested by the L2 contract. It is paired with an ERC-20 contract in L2 which mints tokens based on whatever programmer provided minting facility is desired and burns tokens when they are withdrawn from the rollup chain. Given this base infrastructure, Arbitrum can support any smart contract based method for minting tokens in L2, and indeed we directly support Reddit's signature/claim based minting in L2.
Batch minting. What's better than a mint cookie? A whole batch! In addition to supporting Reddit’s current minting/claiming scheme, we built a second minting design, which we believe outperforms the signature/claim system in many scenarios.
In the current system, Reddit periodically issues signed statements to users, who then take those statements to the blockchain to claim their tokens. An alternative approach would have Reddit directly submit the list of users/amounts to the blockchain and distribute the tokens to the users without the signature/claim process.
To optimize the cost efficiency of this approach, we designed an application-specific compression scheme to minimize the size of the batch distribution list. We analyzed the data from Reddit's previous distributions and found that the data is highly compressible since token amounts are small and repeated, and addresses appear multiple times. Our function groups transactions by size, and replaces previously-seen addresses with a shorter index value. We wrote client code to compress the data, wrote a Solidity decompressing function, and integrated that function into Reddit’s contract running on Arbitrum.
When we ran the compression function on the previous Reddit distribution data, we found that we could compress batched minting data down to to 11.8 bytes per minting event (averaged over a 6-month trace of Reddit’s historical token grants)compared with roughly 174 bytes of on-chain data needed for the signature claim approach to minting (roughly 43 for an RLP-encoded null transaction + 65 for Reddit's signature + 65 for the user's signature + roughly 8 for the number of Points) .
The relative benefit of the two approaches with respect to on-chain call data cost depends on the percentage of users that will actually claim their tokens on chain. With the above figures, batch minting will be cheaper if roughly 5% of users redeem their claims. We stress that our compression scheme is not Arbitrum-specific and would be beneficial in any general-purpose smart contract platform.
8. Benchmarks and costs
In this section, we give the full costs of operating the Reddit contracts on an Arbitrum Rollup chain including the L1 gas costs for the Rollup chain, the costs of computation and storage for the L2 validators as well as the capital lockup requirements for staking.
Arbitrum Rollup is still on testnet, so we did not run mainnet benchmarks. Instead, we measured the L1 gas cost and L2 workload for Reddit operations on Arbitrum and calculated the total cost assuming current Ethereum gas prices. As noted below in detail, our measurements do not assume that Arbitrum is consuming the entire capacity of Ethereum. We will present the details of our model now, but for full transparency you can also play around with it yourself and adjust the parameters, by copying the spreadsheet found here.
Our cost model is based on measurements of Reddit’s contracts, running unmodified (except for the addition of a batch minting function) on Arbitrum Rollup on top of Ethereum.
On the distribution of transactions and frequency of assertions. Reddit's instructions specify the following minimum parameters that submissions should support:
Over a 5 day period, your scaling PoC should be able to handle:
  • 100,000 point claims (minting & distributing points)
  • 25,000 subscriptions
  • 75,000 one-off points burning
  • 100,000 transfers
We provide the full costs of operating an Arbitrum Rollup chain with this usage under the assumption that tokens are minted or granted to users in batches, but other transactions are uniformly distributed over the 5 day period. Unlike some other submissions, we do not make unrealistic assumptions that all operations can be submitted in enormous batches. We assume that batch minting is done in batches that use only a few percent on an L1 block’s gas, and that other operations come in evenly over time and are submitted in batches, with one batch every five minutes to keep latency reasonable. (Users are probably already waiting for L1 finality, which takes at least that long to achieve.)
We note that assuming that there are only 300,000 transactions that arrive uniformly over the 5 day period will make our benchmark numbers lower, but we believe that this will reflect the true cost of running the system. To see why, say that batches are submitted every five minutes (20 L1 blocks) and there's a fixed overhead of c bytes of calldata per batch, the cost of which will get amortized over all transactions executed in that batch. Assume that each individual transaction adds a marginal cost of t. Lastly assume the capacity of the scaling system is high enough that it can support all of Reddit's 300,000 transactions within a single 20-block batch (i.e. that there is more than c + 300,000*t byes of calldata available in 20 blocks).
Consider what happens if c, the per-batch overhead, is large (which it is in some systems, but not in Arbitrum). In the scenario that transactions actually arrive at the system's capacity and each batch is full, then c gets amortized over 300,000 transactions. But if we assume that the system is not running at capacity--and only receives 300,000 transactions arriving uniformly over 5 days-- then each 20-block assertion will contain about 200 transactions, and thus each transaction will pay a nontrivial cost due to c.
We are aware that other proposals presented scaling numbers assuming that 300,000 transactions arrived at maximum capacity and was executed in a single mega-transaction, but according to our estimates, for at least one such report, this led to a reported gas price that was 2-3 orders of magnitude lower than it would have been assuming uniform arrival. We make more realistic batching assumptions, and we believe Arbitrum compares well when batch sizes are realistic.
Our model. Our cost model includes several sources of cost:
  • L1 gas costs: This is the cost of posting transactions as calldata on the L1 chain, as well as the overhead associated with each batch of transactions, and the L1 cost of settling transactions in the Arbitrum protocol.
  • Validator’s staking costs: In normal operation, one validator will need to be staked. The stake is assumed to be 0.2% of the total value of the chain (which is assumed to be $1 per user who is eligible to claim points). The cost of staking is the interest that could be earned on the money if it were not staked.
  • Validator computation and storage: Every validator must do computation to track the chain’s processing of transactions, and must maintain storage to keep track of the contracts’ EVM storage. The cost of computation and storage are estimated based on measurements, with the dollar cost of resources based on Amazon Web Services pricing.
It’s clear from our modeling that the predominant cost is for L1 calldata. This will probably be true for any plausible rollup-based system.
Our model also shows that Arbitrum can scale to workloads much larger than Reddit’s nominal workload, without exhausting L1 or L2 resources. The scaling bottleneck will ultimately be calldata on the L1 chain. We believe that cost could be reduced substantially if necessary by clever encoding of data. (In our design any compression / decompression of L2 transaction calldata would be done by client software and L2 programs, never by an L1 contract.)
9. Status of Arbitrum Rollup
Arbitrum Rollup is live on Ethereum testnet. All of the code written to date including everything included in the Reddit demo is open source and permissively licensed under the Apache V2 license. The first testnet version of Arbitrum Rollup was released on testnet in February. Our current internal version, which we used to benchmark the Reddit contracts, will be released soon and will be a major upgrade.
Both the Arbitrum design as well as the implementation are heavily audited by independent third parties. The Arbitrum academic paper was published at USENIX Security, a top-tier peer-reviewed academic venue. For the Arbitrum software, we have engaged Trail of Bits for a security audit, which is currently ongoing, and we are committed to have a clean report before launching on Ethereum mainnet.
10. Reddit Universe Arbitrum Rollup Chain
The benchmarks described in this document were all measured using the latest internal build of our software. When we release the new software upgrade publicly we will launch a Reddit Universe Arbitrum Rollup chain as a public demo, which will contain the Reddit contracts as well as a Uniswap instance and a Connext Hub, demonstrating how Community Points can be integrated into third party apps. We will also allow members of the public to dynamically launch ecosystem contracts. We at Offchain Labs will cover the validating costs for the Reddit Universe public demo.
If the folks at Reddit would like to evaluate our software prior to our public demo, please email us at [email protected] and we'd be more than happy to provide early access.
11. Even more scaling: Arbitrum Sidechains
Rollups are an excellent approach to scaling, and we are excited about Arbitrum Rollup which far surpasses Reddit's scaling needs. But looking forward to Reddit's eventual goal of supporting hundreds of millions of users, there will likely come a time when Reddit needs more scaling than any Rollup protocol can provide.
While Rollups greatly reduce costs, they don't break the linear barrier. That is, all transactions have an on-chain footprint (because all calldata must be posted on-chain), albeit a far smaller one than on native Ethereum, and the L1 limitations end up being the bottleneck for capacity and cost. Since Ethereum has limited capacity, this linear use of on-chain resources means that costs will eventually increase superlinearly with traffic.
The good news is that we at Offchain Labs have a solution in our roadmap that can satisfy this extreme-scaling setting as well: Arbitrum AnyTrust Sidechains. Arbitrum Sidechains are similar to Arbitrum Rollup, but deviate in that they name a permissioned set of validators. When a chain’s validators agree off-chain, they can greatly reduce the on-chain footprint of the protocol and require almost no data to be put on-chain. When validators can't reach unanimous agreement off-chain, the protocol reverts to Arbitrum Rollup. Technically, Arbitrum Sidechains can be viewed as a hybrid between state channels and Rollup, switching back and forth as necessary, and combining the performance and cost that state channels can achieve in the optimistic case, with the robustness of Rollup in other cases. The core technical challenge is how to switch seamlessly between modes and how to guarantee that security is maintained throughout.
Arbitrum Sidechains break through this linear barrier, while still maintaining a high level of security and decentralization. Arbitrum Sidechains provide the AnyTrust guarantee, which says that as long as any one validator is honest and available (even if you don't know which one will be), the L2 chain is guaranteed to execute correctly according to its code and guaranteed to make progress. Unlike in a state channel, offchain progress does not require unanimous consent, and liveness is preserved as long as there is a single honest validator.
Note that the trust model for Arbitrum Sidechains is much stronger than for typical BFT-style chains which introduce a consensus "voting" protocols among a small permissioned group of validators. BFT-based protocols require a supermajority (more than 2/3) of validators to agree. In Arbitrum Sidechains, by contrast, all you need is a single honest validator to achieve guaranteed correctness and progress. Notice that in Arbitrum adding validators strictly increases security since the AnyTrust guarantee provides correctness as long as any one validator is honest and available. By contrast, in BFT-style protocols, adding nodes can be dangerous as a coalition of dishonest nodes can break the protocol.
Like Arbitrum Rollup, the developer and user experiences for Arbitrum Sidechains will be identical to that of Ethereum. Reddit would be able to choose a large and diverse set of validators, and all that they would need to guarantee to break through the scaling barrier is that a single one of them will remain honest.
We hope to have Arbitrum Sidechains in production in early 2021, and thus when Reddit reaches the scale that surpasses the capacity of Rollups, Arbitrum Sidechains will be waiting and ready to help.
While the idea to switch between channels and Rollup to get the best of both worlds is conceptually simple, getting the details right and making sure that the switch does not introduce any attack vectors is highly non-trivial and has been the subject of years of our research (indeed, we were working on this design for years before the term Rollup was even coined).
12. How Arbitrum compares
We include a comparison to several other categories as well as specific projects when appropriate. and explain why we believe that Arbitrum is best suited for Reddit's purposes. We focus our attention on other Ethereum projects.
Payment only Rollups. Compared to Arbitrum Rollup, ZK-Rollups and other Rollups that only support token transfers have several disadvantages:
  • As outlined throughout the proposal, we believe that the entire draw of Ethereum is in its rich smart contracts support which is simply not achievable with today's zero-knowledge proof technology. Indeed, scaling with a ZK-Rollup will add friction to the deployment of smart contracts that interact with Community Points as users will have to withdraw their coins from the ZK-Rollup and transfer them to a smart contract system (like Arbitrum). The community will be best served if Reddit builds on a platform that has built-in, frictionless smart-contract support.
  • All other Rollup protocols of which we are aware employ a centralized operator. While it's true that users retain custody of their coins, the centralized operator can often profit from censoring, reordering, or delaying transactions. A common misconception is that since they're non-custodial protocols, a centralized sequencer does not pose a risk but this is incorrect as the sequencer can wreak havoc or shake down users for side payments without directly stealing funds.
  • Sidechain type protocols can eliminate some of these issues, but they are not trustless. Instead, they require trust in some quorum of a committee, often requiring two-third of the committee to be honest, compared to rollup protocols like Arbitrum that require only a single honest party. In addition, not all sidechain type protocols have committees that are diverse, or even non-centralized, in practice.
  • Plasma-style protocols have a centralized operator and do not support general smart contracts.
13. Concluding Remarks
While it's ultimately up to the judges’ palate, we believe that Arbitrum Rollup is the bakeoff choice that Reddit kneads. We far surpass Reddit's specified workload requirement at present, have much room to optimize Arbitrum Rollup in the near term, and have a clear path to get Reddit to hundreds of millions of users. Furthermore, we are the only project that gives developers and users the identical interface as the Ethereum blockchain and is fully interoperable and tooling-compatible, and we do this all without any new trust assumptions or centralized components.
But no matter how the cookie crumbles, we're glad to have participated in this bake-off and we thank you for your consideration.
About Offchain Labs
Offchain Labs, Inc. is a venture-funded New York company that spun out of Princeton University research, and is building the Arbitrum platform to usher in the next generation of scalable, interoperable, and compatible smart contracts. Offchain Labs is backed by Pantera Capital, Compound VC, Coinbase Ventures, and others.
Leadership Team
Ed Felten
Ed Felten is Co-founder and Chief Scientist at Offchain Labs. He is on leave from Princeton University, where he is the Robert E. Kahn Professor of Computer Science and Public Affairs. From 2015 to 2017 he served at the White House as Deputy United States Chief Technology Officer and senior advisor to the President. He is an ACM Fellow and member of the National Academy of Engineering. Outside of work, he is an avid runner, cook, and L.A. Dodgers fan.
Steven Goldfeder
Steven Goldfeder is Co-founder and Chief Executive Officer at Offchain Labs. He holds a PhD from Princeton University, where he worked at the intersection of cryptography and cryptocurrencies including threshold cryptography, zero-knowledge proof systems, and post-quantum signatures. He is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies, and he has previously worked at Google and Microsoft Research, where he co-invented the Picnic signature algorithm. When not working, you can find Steven spending time with his family, taking a nature walk, or twisting balloons.
Harry Kalodner
Harry Kalodner is Co-founder and Chief Technology Officer at Offchain Labs where he leads the engineering team. Before the company he attended Princeton as a Ph.D candidate where his research explored economics, anonymity, and incentive compatibility of cryptocurrencies, and he also has worked at Apple. When not up at 3:00am writing code, Harry occasionally sleeps.
submitted by hkalodner to ethereum [link] [comments]

/r/Monero Weekly Discussion – August 15, 2020 - Use this thread for general chatter, basic questions, and if you're new to Monero

Index

  1. General questions
  2. Wallet: CLI & GUI
  3. Wallet: Ledger
  4. Nodes

1. General questions

Where can I download the Monero wallet?

There are multiple Monero wallets for a wide range of devices at your disposal. Check the table below for details and download links. Attention: for extra security make sure to calculate and compare the checksum of your downloaded files when possible.
Please note the following usage of the labels:
⚠️ - Relatively new and/or beta. Use wallet with caution.
☢️ - Closed source.

Desktop wallets

Wallet Device Description Download link
"Official" GUI / CLI Windows, macOS, Linux Default implementation maintained by the core team. Use this wallet to run a full node and obtain maximum privacy. Integrates with hardware wallets. Current version: 0.15.0.1 / 0.15.0.4. GetMonero.org
MyMonero Windows, macOS, Linux Lightweight wallet -- you don't need to download the blockchain and run a node. MyMonero was developed with the assistance of the core team. It also has web-based and iOS versions. MyMonero.com
Exodus Windows, macOS, Linux ⚠️ / Multi-asset wallet. Exodus.io
ZelCore Windows, macOS, Linux ⚠️ / Multi-asset wallet. It also has Android and iOS versions. Zeltrez.io
Guarda Windows, macOS, Linux ⚠️ ☢️ / Multi-asset wallet. Guarda.co

Mobile wallets

Wallet Device Description Download link
Monerujo Android Integrates with Ledger (hardware wallet). Website: https://www.monerujo.io/. Google Play / F-Droid / GitHub
MyMonero iOS Website: https://mymonero.com/ App Store
Cake Wallet iOS Website: https://cakewallet.io/ App Store
X Wallet iOS Website: https://xwallet.tech/ App Store
Edge Wallet Android / iOS Multi-asset wallet. Website: https://edge.app/ Google Play / App Store
ZelCore Android / iOS ⚠️ / Multi-asset wallet. Website: https://zelcore.io/ Google Play / App Store
Coinomi Android / iOS ⚠️ ☢️ / Multi-asset wallet. Website: https://www.coinomi.com/ Google Play / App Store
Moxi / Guarda Android / iOS ⚠️ ☢️ / Multi-asset wallet. Website: https://guarda.co/ Google Play / App Store
Exa Wallet Android / iOS ⚠️ Website: https://exan.tech/ Google Play / App Store
Wookey Wallet Android / iOS ⚠️ Website: https://wallet.wookey.io/ Google Play / F-Droid / App Store
Exodus Android / iOS ⚠️ / Multi-asset wallet. Website: https://www.exodus.io/monero/) Google Play / [App Store](https://apps.apple.com/app/exodus-crypto-wallet/id1414384820

Web-based wallets

Wallet Description Link
MyMonero Web version of the MyMonero wallet. Web
XMRWallet Web wallet with TOR support. Web / Onion URL
Guarda Multi-asset wallet. Web

How long does it take for my balance to unlock?

Your balance is unlocked after 10 confirmations (which means 10 mined blocks). A block is mined approximately every two minutes on the Monero network, so that would be around 20 minutes.

How can I prove that I sent a payment?

The fastest and most direct way is by using the ExploreMonero blockchain explorer. You will need to recover the transaction key from your wallet (complete guide for GUI / CLI).

How do I buy Monero (XMR) with Bitcoin (BTC)?

There are dozens of exchanges that trade Monero against Bitcoin and other cryptocurrencies. Check out the list on CoinMarketCap and choose the option that suits you best.

How do I buy Monero (XMR) with fiat?

How can I quickly exchange my Monero (XMR) for Bitcoin (BTC)?

There are multiple ways to exchange your Monero for Bitcoin, but first of all, I'd like to remind you that if you really want to do your part for Monero, one of the simplest ways is to get in touch with your merchant/service provider and request for it to accept Monero directly as payment. Ask the service provider to visit the official website and our communication channels if he or she needs help with system integration.
That being said, the community has been recommending two services in particular, XMR.TO and MorphToken. These services are only recommendations and are operated by entities outside the control of the Monero Project. Be diligent.

How do I mine Monero? And other mining questions.

The correct place to ask questions and discuss the Monero mining scene is in the dedicated subreddit MoneroMining. That being said, you can find a list of pools and available mining software in the GetMonero.org website.

2. Wallet: CLI & GUI

Why I can't see my balance? Where is my XMR?

Before any action there are two things to check:
  1. Are you using the latest available version of the wallet? A new version is released roughly every 6 months, so make sure you're using the current release (compare the release on GetMonero.org with your wallet's version on Settings, under Debug info).
  2. Is your wallet fully synchronized? If it isn't, wait the sync to complete.
Because Monero is different from Bitcoin, wallet synchronization is not instant. The software needs to synchronize the blockchain and use your private keys to identify your transactions. Check in the lower left corner (GUI) if the wallet is synchronized.
You can't send transactions and your balance might be wrong or unavailable if the wallet is not synced with the network. So please wait.
If this is not a sufficient answer for your case and you're looking for more information, please see this answer on StackExchange.

How do I upgrade my wallet to the newest version?

This question is beautifully answered on StackExchange.

Why does it take so long to sync the wallet [for the first time]?

You have decided to use Monero's wallet and run a local node. Congratulations! You have chosen the safest and most secure option for your privacy, but unfortunately this has an initial cost. The first reason for the slowness is that you will need to download the entire blockchain, which is considerably heavy (+70 GB) and constantly growing. There are technologies being implemented in Monero to slow this growth, however it is inevitable to make this initial download to run a full node. Consider syncing to a device that has an SSD instead of an HDD, as this greatly impacts the speed of synchronization.
Now that the blockchain is on your computer, the next time you run the wallet you only need to download new blocks, which should take seconds or minutes (depending on how often you use the wallet).

I don't want to download the blockchain, how can I skip that?

The way to skip downloading the blockchain is connecting your wallet to a public remote node. You can follow this guide on how to set it up. You can find a list of public remote nodes on MoneroWorld.
Be advised that when using a public remote node you lose some of your privacy. A public remote node is able to identify your IP and opens up a range for certain attacks that further diminish your privacy. A remote node can't see your balance and it can't spend your XMR.

How do I restore my wallet from the mnemonic seed or from the keys?

To restore your wallet with the 25 word mnemonic seed, please see this guide.
To restore your wallet with your keys, please see this guide.

3. Wallet: Ledger

How do I generate a Ledger Monero Wallet with the GUI or CLI?

This question is beautifully answered on StackExchange. Check this page for the GUI instructions, and this page for the CLI instructions.

4. Nodes

How can my local node become a public remote node?

If you want to support other Monero users by making your node public, you can follow the instructions on MoneroWorld, under the section "How To Include Your Node On Moneroworld".

How can I connect my node via Tor?

This question is beautifully answered on StackExchange.
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Crypto Code Review Best CryptoCurrency Trading Software 2018 Top 5 Best Cryptocurrency Exchanges in 2019 - 2020  Best ... BEST CRYPTO-TRADING PLATFORM 2019 New!!! Best Cryptocurrency Trading Platform Best Free Automated Crypto Trading

What are the Best Trading Platforms? Coinigy. Coinigy is arguably the most widely used trading platform in the market. They began in 2014 and have been growing since. They support 45+ exchanges, trading charts, and quality support. 45+ exchange is more than any other platform, which gives a solid advantage to Coinigy users over non-Coinigy users. Best Cryptocurrency Trading Software. There are plenty of options on the market you can choose from. We’ve done the legwork and determine which software is best. As a result, we’ve curated a list for you so you know which cryptocurrency trading software you could use in 2020. Name Description Here is the list of cryptocurrency trading tools listed below: Stacked (High-quality algo trading bots, Read Stacked review) 3Commas (Single terminal for smart trading, Read 3commas review) Binance (The best exchange for trading, read Binance review) CoinTracking (Crypto Portfolio tool) Coinigy; Shrimpy (Read Shrimpy review) Automated trading software allows you to trad based on preset parameters. Benzinga takes an in-depth look at some of the best softwares for 2020. Now, a trading bot is basically a piece of software that has been designed to analyze the cryptocurrency market trading data. Once you acquire one, you are required to customize it to your preferences. Afterward, the software will analyze the market on your behalf and will trade automatically.

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Crypto Code Review Best CryptoCurrency Trading Software 2018

The Best Cryptocurrency Tool Known to Man - Hodloo! - Duration: 8:58. ... TOP 5 Cryptocurrency Trading Bots - Crypto Trading Bot Review - Duration: 8:09. Marc Zwygart 216,929 views. The Full Report: https://bit.ly/3b1O7E3 - The 6-Second Trick For Automated Binary Options Cryptocurrency Trading Software Updated Jul, 2020 1071 Views Today ... Best Cryptocurrency Trading Platform This video gives you a complete guide on how to setup your trading platform using a free website called Tradingview. They have both a paid and free service ... A great Cryptocurrency Trading Exchange is a must if you want to make a ton of money trading crypto currency. List of the Best cryptocurrency trading Exchang... If you want to find out more about the tools we have for cryptocurrency investors in our Masters area, see video here: https://moocharoo.ninja/bmm Also start...

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