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Technical: A Brief History of Payment Channels: from Satoshi to Lightning Network

Who cares about political tweets from some random country's president when payment channels are a much more interesting and are actually capable of carrying value?
So let's have a short history of various payment channel techs!

Generation 0: Satoshi's Broken nSequence Channels

Because Satoshi's Vision included payment channels, except his implementation sucked so hard we had to go fix it and added RBF as a by-product.
Originally, the plan for nSequence was that mempools would replace any transaction spending certain inputs with another transaction spending the same inputs, but only if the nSequence field of the replacement was larger.
Since 0xFFFFFFFF was the highest value that nSequence could get, this would mark a transaction as "final" and not replaceable on the mempool anymore.
In fact, this "nSequence channel" I will describe is the reason why we have this weird rule about nLockTime and nSequence. nLockTime actually only works if nSequence is not 0xFFFFFFFF i.e. final. If nSequence is 0xFFFFFFFF then nLockTime is ignored, because this if the "final" version of the transaction.
So what you'd do would be something like this:
  1. You go to a bar and promise the bartender to pay by the time the bar closes. Because this is the Bitcoin universe, time is measured in blockheight, so the closing time of the bar is indicated as some future blockheight.
  2. For your first drink, you'd make a transaction paying to the bartender for that drink, paying from some coins you have. The transaction has an nLockTime equal to the closing time of the bar, and a starting nSequence of 0. You hand over the transaction and the bartender hands you your drink.
  3. For your succeeding drink, you'd remake the same transaction, adding the payment for that drink to the transaction output that goes to the bartender (so that output keeps getting larger, by the amount of payment), and having an nSequence that is one higher than the previous one.
  4. Eventually you have to stop drinking. It comes down to one of two possibilities:
    • You drink until the bar closes. Since it is now the nLockTime indicated in the transaction, the bartender is able to broadcast the latest transaction and tells the bouncers to kick you out of the bar.
    • You wisely consider the state of your liver. So you re-sign the last transaction with a "final" nSequence of 0xFFFFFFFF i.e. the maximum possible value it can have. This allows the bartender to get his or her funds immediately (nLockTime is ignored if nSequence is 0xFFFFFFFF), so he or she tells the bouncers to let you out of the bar.
Now that of course is a payment channel. Individual payments (purchases of alcohol, so I guess buying coffee is not in scope for payment channels). Closing is done by creating a "final" transaction that is the sum of the individual payments. Sure there's no routing and channels are unidirectional and channels have a maximum lifetime but give Satoshi a break, he was also busy inventing Bitcoin at the time.
Now if you noticed I called this kind of payment channel "broken". This is because the mempool rules are not consensus rules, and cannot be validated (nothing about the mempool can be validated onchain: I sigh every time somebody proposes "let's make block size dependent on mempool size", mempool state cannot be validated by onchain data). Fullnodes can't see all of the transactions you signed, and then validate that the final one with the maximum nSequence is the one that actually is used onchain. So you can do the below:
  1. Become friends with Jihan Wu, because he owns >51% of the mining hashrate (he totally reorged Bitcoin to reverse the Binance hack right?).
  2. Slip Jihan Wu some of the more interesting drinks you're ordering as an incentive to cooperate with you. So say you end up ordering 100 drinks, you split it with Jihan Wu and give him 50 of the drinks.
  3. When the bar closes, Jihan Wu quickly calls his mining rig and tells them to mine the version of your transaction with nSequence 0. You know, that first one where you pay for only one drink.
  4. Because fullnodes cannot validate nSequence, they'll accept even the nSequence=0 version and confirm it, immutably adding you paying for a single alcoholic drink to the blockchain.
  5. The bartender, pissed at being cheated, takes out a shotgun from under the bar and shoots at you and Jihan Wu.
  6. Jihan Wu uses his mystical chi powers (actually the combined exhaust from all of his mining rigs) to slow down the shotgun pellets, making them hit you as softly as petals drifting in the wind.
  7. The bartender mutters some words, clothes ripping apart as he or she (hard to believe it could be a she but hey) turns into a bear, ready to maul you for cheating him or her of the payment for all the 100 drinks you ordered from him or her.
  8. Steely-eyed, you stand in front of the bartender-turned-bear, daring him to touch you. You've watched Revenant, you know Leonardo di Caprio could survive a bear mauling, and if some posh actor can survive that, you know you can too. You make a pose. "Drunken troll logic attack!"
  9. I think I got sidetracked here.
Lessons learned?

Spilman Channels

Incentive-compatible time-limited unidirectional channel; or, Satoshi's Vision, Fixed (if transaction malleability hadn't been a problem, that is).
Now, we know the bartender will turn into a bear and maul you if you try to cheat the payment channel, and now that we've revealed you're good friends with Jihan Wu, the bartender will no longer accept a payment channel scheme that lets one you cooperate with a miner to cheat the bartender.
Fortunately, Jeremy Spilman proposed a better way that would not let you cheat the bartender.
First, you and the bartender perform this ritual:
  1. You get some funds and create a transaction that pays to a 2-of-2 multisig between you and the bartender. You don't broadcast this yet: you just sign it and get its txid.
  2. You create another transaction that spends the above transaction. This transaction (the "backoff") has an nLockTime equal to the closing time of the bar, plus one block. You sign it and give this backoff transaction (but not the above transaction) to the bartender.
  3. The bartender signs the backoff and gives it back to you. It is now valid since it's spending a 2-of-2 of you and the bartender, and both of you have signed the backoff transaction.
  4. Now you broadcast the first transaction onchain. You and the bartender wait for it to be deeply confirmed, then you can start ordering.
The above is probably vaguely familiar to LN users. It's the funding process of payment channels! The first transaction, the one that pays to a 2-of-2 multisig, is the funding transaction that backs the payment channel funds.
So now you start ordering in this way:
  1. For your first drink, you create a transaction spending the funding transaction output and sending the price of the drink to the bartender, with the rest returning to you.
  2. You sign the transaction and pass it to the bartender, who serves your first drink.
  3. For your succeeding drinks, you recreate the same transaction, adding the price of the new drink to the sum that goes to the bartender and reducing the money returned to you. You sign the transaction and give it to the bartender, who serves you your next drink.
  4. At the end:
    • If the bar closing time is reached, the bartender signs the latest transaction, completing the needed 2-of-2 signatures and broadcasting this to the Bitcoin network. Since the backoff transaction is the closing time + 1, it can't get used at closing time.
    • If you decide you want to leave early because your liver is crying, you just tell the bartender to go ahead and close the channel (which the bartender can do at any time by just signing and broadcasting the latest transaction: the bartender won't do that because he or she is hoping you'll stay and drink more).
    • If you ended up just hanging around the bar and never ordering, then at closing time + 1 you broadcast the backoff transaction and get your funds back in full.
Now, even if you pass 50 drinks to Jihan Wu, you can't give him the first transaction (the one which pays for only one drink) and ask him to mine it: it's spending a 2-of-2 and the copy you have only contains your own signature. You need the bartender's signature to make it valid, but he or she sure as hell isn't going to cooperate in something that would lose him or her money, so a signature from the bartender validating old state where he or she gets paid less isn't going to happen.
So, problem solved, right? Right? Okay, let's try it. So you get your funds, put them in a funding tx, get the backoff tx, confirm the funding tx...
Once the funding transaction confirms deeply, the bartender laughs uproariously. He or she summons the bouncers, who surround you menacingly.
"I'm refusing service to you," the bartender says.
"Fine," you say. "I was leaving anyway;" You smirk. "I'll get back my money with the backoff transaction, and posting about your poor service on reddit so you get negative karma, so there!"
"Not so fast," the bartender says. His or her voice chills your bones. It looks like your exploitation of the Satoshi nSequence payment channel is still fresh in his or her mind. "Look at the txid of the funding transaction that got confirmed."
"What about it?" you ask nonchalantly, as you flip open your desktop computer and open a reputable blockchain explorer.
What you see shocks you.
"What the --- the txid is different! You--- you changed my signature?? But how? I put the only copy of my private key in a sealed envelope in a cast-iron box inside a safe buried in the Gobi desert protected by a clan of nomads who have dedicated their lives and their childrens' lives to keeping my private key safe in perpetuity!"
"Didn't you know?" the bartender asks. "The components of the signature are just very large numbers. The sign of one of the signature components can be changed, from positive to negative, or negative to positive, and the signature will remain valid. Anyone can do that, even if they don't know the private key. But because Bitcoin includes the signatures in the transaction when it's generating the txid, this little change also changes the txid." He or she chuckles. "They say they'll fix it by separating the signatures from the transaction body. They're saying that these kinds of signature malleability won't affect transaction ids anymore after they do this, but I bet I can get my good friend Jihan Wu to delay this 'SepSig' plan for a good while yet. Friendly guy, this Jihan Wu, it turns out all I had to do was slip him 51 drinks and he was willing to mine a tx with the signature signs flipped." His or her grin widens. "I'm afraid your backoff transaction won't work anymore, since it spends a txid that is not existent and will never be confirmed. So here's the deal. You pay me 99% of the funds in the funding transaction, in exchange for me signing the transaction that spends with the txid that you see onchain. Refuse, and you lose 100% of the funds and every other HODLer, including me, benefits from the reduction in coin supply. Accept, and you get to keep 1%. I lose nothing if you refuse, so I won't care if you do, but consider the difference of getting zilch vs. getting 1% of your funds." His or her eyes glow. "GENUFLECT RIGHT NOW."
Lesson learned?

CLTV-protected Spilman Channels

Using CLTV for the backoff branch.
This variation is simply Spilman channels, but with the backoff transaction replaced with a backoff branch in the SCRIPT you pay to. It only became possible after OP_CHECKLOCKTIMEVERIFY (CLTV) was enabled in 2015.
Now as we saw in the Spilman Channels discussion, transaction malleability means that any pre-signed offchain transaction can easily be invalidated by flipping the sign of the signature of the funding transaction while the funding transaction is not yet confirmed.
This can be avoided by simply putting any special requirements into an explicit branch of the Bitcoin SCRIPT. Now, the backoff branch is supposed to create a maximum lifetime for the payment channel, and prior to the introduction of OP_CHECKLOCKTIMEVERIFY this could only be done by having a pre-signed nLockTime transaction.
With CLTV, however, we can now make the branches explicit in the SCRIPT that the funding transaction pays to.
Instead of paying to a 2-of-2 in order to set up the funding transaction, you pay to a SCRIPT which is basically "2-of-2, OR this singlesig after a specified lock time".
With this, there is no backoff transaction that is pre-signed and which refers to a specific txid. Instead, you can create the backoff transaction later, using whatever txid the funding transaction ends up being confirmed under. Since the funding transaction is immutable once confirmed, it is no longer possible to change the txid afterwards.

Todd Micropayment Networks

The old hub-spoke model (that isn't how LN today actually works).
One of the more direct predecessors of the Lightning Network was the hub-spoke model discussed by Peter Todd. In this model, instead of payers directly having channels to payees, payers and payees connect to a central hub server. This allows any payer to pay any payee, using the same channel for every payee on the hub. Similarly, this allows any payee to receive from any payer, using the same channel.
Remember from the above Spilman example? When you open a channel to the bartender, you have to wait around for the funding tx to confirm. This will take an hour at best. Now consider that you have to make channels for everyone you want to pay to. That's not very scalable.
So the Todd hub-spoke model has a central "clearing house" that transport money from payers to payees. The "Moonbeam" project takes this model. Of course, this reveals to the hub who the payer and payee are, and thus the hub can potentially censor transactions. Generally, though, it was considered that a hub would more efficiently censor by just not maintaining a channel with the payer or payee that it wants to censor (since the money it owned in the channel would just be locked uselessly if the hub won't process payments to/from the censored user).
In any case, the ability of the central hub to monitor payments means that it can surveill the payer and payee, and then sell this private transactional data to third parties. This loss of privacy would be intolerable today.
Peter Todd also proposed that there might be multiple hubs that could transport funds to each other on behalf of their users, providing somewhat better privacy.
Another point of note is that at the time such networks were proposed, only unidirectional (Spilman) channels were available. Thus, while one could be a payer, or payee, you would have to use separate channels for your income versus for your spending. Worse, if you wanted to transfer money from your income channel to your spending channel, you had to close both and reshuffle the money between them, both onchain activities.

Poon-Dryja Lightning Network

Bidirectional two-participant channels.
The Poon-Dryja channel mechanism has two important properties:
Both the original Satoshi and the two Spilman variants are unidirectional: there is a payer and a payee, and if the payee wants to do a refund, or wants to pay for a different service or product the payer is providing, then they can't use the same unidirectional channel.
The Poon-Dryjam mechanism allows channels, however, to be bidirectional instead: you are not a payer or a payee on the channel, you can receive or send at any time as long as both you and the channel counterparty are online.
Further, unlike either of the Spilman variants, there is no time limit for the lifetime of a channel. Instead, you can keep the channel open for as long as you want.
Both properties, together, form a very powerful scaling property that I believe most people have not appreciated. With unidirectional channels, as mentioned before, if you both earn and spend over the same network of payment channels, you would have separate channels for earning and spending. You would then need to perform onchain operations to "reverse" the directions of your channels periodically. Secondly, since Spilman channels have a fixed lifetime, even if you never used either channel, you would have to periodically "refresh" it by closing it and reopening.
With bidirectional, indefinite-lifetime channels, you may instead open some channels when you first begin managing your own money, then close them only after your lawyers have executed your last will and testament on how the money in your channels get divided up to your heirs: that's just two onchain transactions in your entire lifetime. That is the potentially very powerful scaling property that bidirectional, indefinite-lifetime channels allow.
I won't discuss the transaction structure needed for Poon-Dryja bidirectional channels --- it's complicated and you can easily get explanations with cute graphics elsewhere.
There is a weakness of Poon-Dryja that people tend to gloss over (because it was fixed very well by RustyReddit):
Another thing I want to emphasize is that while the Lightning Network paper and many of the earlier presentations developed from the old Peter Todd hub-and-spoke model, the modern Lightning Network takes the logical conclusion of removing a strict separation between "hubs" and "spokes". Any node on the Lightning Network can very well work as a hub for any other node. Thus, while you might operate as "mostly a payer", "mostly a forwarding node", "mostly a payee", you still end up being at least partially a forwarding node ("hub") on the network, at least part of the time. This greatly reduces the problems of privacy inherent in having only a few hub nodes: forwarding nodes cannot get significantly useful data from the payments passing through them, because the distance between the payer and the payee can be so large that it would be likely that the ultimate payer and the ultimate payee could be anyone on the Lightning Network.
Lessons learned?

Future

After LN, there's also the Decker-Wattenhofer Duplex Micropayment Channels (DMC). This post is long enough as-is, LOL. But for now, it uses a novel "decrementing nSequence channel", using the new relative-timelock semantics of nSequence (not the broken one originally by Satoshi). It actually uses multiple such "decrementing nSequence" constructs, terminating in a pair of Spilman channels, one in both directions (thus "duplex"). Maybe I'll discuss it some other time.
The realization that channel constructions could actually hold more channel constructions inside them (the way the Decker-Wattenhofer puts a pair of Spilman channels inside a series of "decrementing nSequence channels") lead to the further thought behind Burchert-Decker-Wattenhofer channel factories. Basically, you could host multiple two-participant channel constructs inside a larger multiparticipant "channel" construct (i.e. host multiple channels inside a factory).
Further, we have the Decker-Russell-Osuntokun or "eltoo" construction. I'd argue that this is "nSequence done right". I'll write more about this later, because this post is long enough.
Lessons learned?
submitted by almkglor to Bitcoin [link] [comments]

r/Bitcoin recap - March 2018

Hi Bitcoiners!
I’m back with the fifteenth monthly Bitcoin news recap.
For those unfamiliar, each day I pick out the most popularelevant/interesting stories in Bitcoin and save them. At the end of the month I release them in one batch, to give you a quick (but not necessarily the best) overview of what happened in bitcoin over the past month.
And a lot has happened. It's easy to forget with so much focus on the price. Take a moment and scroll through the list below. You'll find an incredibly eventful month.
You can see recaps of the previous months on Bitcoinsnippets.com
A recap of Bitcoin in March 2018
submitted by SamWouters to Bitcoin [link] [comments]

Binance Could Learn from 10 Years of Crypto

Binance's deposit problems on 2019 arise from an known, age-old, property of cryptocurrencies, generally known as "malleability".
On Feb 5, 2019, Binance was reported to credit, for a second time, some Nano user deposits that had already been credited months before. The presumed reason is that they were upgrading nodes and replaying the block chain, and didn't turn off the deposit engine for this replay. When the new blocks were replayed, they somehow generated new block identifiers on Binance's internal servers (that is, these blocks were not relayed to Binance from outside Binance).
These new block identifiers (for old blocks) triggered the deposit processor to create new internal deposits for user accounts, causing these accounts to get unduly credited with extra funds.
This general crypto issue has been known for ages and it is surprising that Binance was susceptible to it. For example, the standard bitcoin transaction ID can be changed in a variety of ways without invalidating the transaction. This is called transaction ID malleability. If an exchange considers transactions with new transaction IDs as new deposits, they are susceptible to double deposits.
The reason exchanges don't get caught by transaction malleability is that they judge new deposits by the transaction details and not the transaction ID, which can be changed. They also don't credit a user until the transaction has been confirmed a few times. While going down, MtGox famously blamed their problems on bitcoin transaction malleability (even though no one could ever verify these claims).
Even though exchanges have adopted workarounds, the general property is potentially problematic enough that bitcoin introduced a new type of transaction identifier with the segwit fork to address this general issue of malleability.
The nano protocol doesn't include the concept of confirmations, so counting confirmations to validate deposits can't apply. However, this dissimilarity doesn't mean that the basic problem of transaction malleability isn't known. And it underscores that the general practice of checking transaction details is much better than relying on protocol identifiers (like block or transaction IDs).
My understanding is that nano 17.1 fixed the underlying source of malleability that caught Binance, but in upgrading to the fix Binance's deposit processor was running the old protocol and processed a few second deposits.
submitted by coinoleum to nanocurrency [link] [comments]

A word of caution. All major exchanges are not even fiat gateways. The actual fiat in the system is likely grossly overestimated. Crypto is decoupled from USD. Implications.

First of all i should disclose i'm fully out of crypto since last Sunday, i'm just waiting for my EUR wire from Bitstamp as that has been my gateway since 2014. I would like to thank bitcoinmarkets for the good times, i've been around for a long time but not really participating that much, and even when I did i used throwaways. I decided to make this topic as a warning and to explain why I got out and why I think you should be very careful.
So we have a situation in which:
1) 80% or more of trading is in USDT (tether)
2) Coinmarket cap is an accomplice to Bitfinex which implies USDT-USD parity. To which degree this is intentional, irresponsibility or just incompetence I would not know. Basically conimarketplace lumps all USDT trades and prices with actual USD trades and prices. If you go there https://coinmarketcap.com/ and try to select PAIR, you get THIS. No USDT, even though most exchanges are USDT. Even if most of liquidity is USDT. Again, this is a major factor in implying parity along with what Bitfinex/Tether try to do. As if this wasn't enough, they also willingly or stupidly inflate USDT price itself. I have to remind you Coinmarketcap is THE point of reference for all cryptosphere. It's oscilating Alexa rank is 100-400. Betfair (real life gambling company) for example uses coinmarket price average for their own system. etc.
3) If/when tethebitfinex crashes, not only does bitfinex crash, it will crash all crypto pairings using USDT on all exchanges using USDT.
4) There are very few fiat gateways. Until recently I assumed the major(top) exchanges have some kind of fiat pairing. I mean.. any respectable exchange would have some way of actually getting money in and out, right? I didn't even think to check. Well, they don't. Literally all the major exchanges are USDT (and/or another stablecoin or proprietary coin) and nothing else. No USD, no EUR, no fiat whatsoever. https://coinmarketcap.com/rankings/exchanges/ . Only the 11th one has actual USD pairing. Didn't check lower but most exchanges don't have fiat. I did a full check on Binance myself as it's the biggest exchange and I had an account there for lulz. There is no fiat.
What does this mean? It means that an allegedly 200 BILLION market cap of all crypto has a fiat gateway of only a couple of exchanges. Most exchanges not using any fiat are not only immune to the risk, they offload risk on the much smaller exchanges that are fiat gateways. And on clients, of course. The cash side of the actual exchanges would need to have to siphon even a fraction of this are unimaginable. If any of these exchanges use crypto to evaluate their own fiat balance (it is illegal but crypto is hardly regulated or audited), they're fucked.
5) If the first four points looked bad, this one is by far the worst. The system is running on a presumed liquidity provided by Tether and on presumed USD capital. Even if tether was legit it's just 2b USD rolling 200b USD. And that 200b USD is just presumed quantity of USD that is in. We don't know how much USD is in the system, there could be and there probably is way less, as over the past 8 years or so crypto ran mostly on funny exchanges that could "provide" whatever USD value they wanted. More so, even if they went bust, people would usually get to withdraw crypto and store it on some other exchange. Even when an exchange was slowly withering, people just pulled out crypto and the exchange actual liquidity was hardly tested out. Or btc-e crashing or MtGox crashing. Their cash side crashed but "crypto" side did not crash. It was bailed out so to speak. So we have crypto running around that should've been worth 1/10 or 1/100 of it's price but it's instead running on par value with crypto on legit exchanges. This grossly inflates price.
Even if tether (or other stablecoin) is legit, it can be drained in a couple of hours. What happens to the pairings of crypto/USDT? People just trade one bitcoin at the presumable price of 6k for 6k USDT that are 100% backed but have no value because there's no USD in the treasury? Who is stupid enough to deposit USD there to get stuck waiting for another fool to bail him out by getting himself stuck?
edit: [Even if tether is 1%, it holds much more assumed/created value, which is the actual issue. Look at it this way. It only adds 1 cent to a real dollar market buy order for example. Each buy order made in a system that implies USDT:USD parity is now worth 1% more than a true USD purchase. Now repeat that buy order millions of times. It's not 1.01+1.01 times 1 million. It's more like 1.01$1.000.000 Each added value comes from USDT injection and USDT has to be liquid on the way down as well. It's added value to the market value is NOT it's market cap. That's a shitfest all "stablecoins" inject into the market, no matter how backed or audited they are.]
As I was saying, all the exchanges that are not holding any fiat are immune to any crash or actual liability. If/when cryptos fail, they'll give you back any number of cryptos/stablecoins you had, even if they're worthless. It's just entries in a database. If/when USDT fails, all it's corresponding crypto prices will go to infinity. If you're holding any USDT, you can't get out of the exchange because 1 btc will cost infinity. If you're in any margin position, no matter where your stops are you'll get margin called instead, as stops are just suggestions in high/extreme volatility. You can't get out through fiat cause there's no fiat.
Your only hope is you were actually holding crypto and they don't block withdrawals. Best case scenario you move your crypto to a fiat gateway exchange and hope to cash out there as fast as possible because it will have had become evident that cryptos were overvalued because of USDT (and even hypothetical USD in the system). Will most likely be too late as people that were already in fiat gateway exchanges already sold/cashed out. There will be enormous sell pressure. And no buyers.
The whole stablecoin issuance is idiotic and I just hope it crashes now and we won't see another bubble built on presumed capital, cause that will hurt way more people. All of this is a mess. Crypto is completely decoupled from real fiat now. The potential money that are in the crypto sphere is exponentially greater than available money to trade out of. Or maybe we should be grateful for stablecoins for finally crashing a system that would've crashed anyway in the long run.
submitted by 5ty54y5yh45 to BitcoinMarkets [link] [comments]

Trading Cryptocurrency Markets

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Major Exchanges
In finance, an exchange is a forum or platform for trading commodities, derivatives, securities or other financial instruments. The principle concern of an exchange is to allow trading between parties to take place in a fair and legally compliant manner, as well as to ensure that pricing information for any instrument traded on the exchange is reliable and coherently delivered to exchange participants. In the cryptocurrency space exchanges are online platforms that allow users to trade cryptocurrencies or digital currencies for fiat money or other cryptocurrencies. They can be centralized exchanges such a Binance, or decentralized exchanges such as IDEX. Most cryptocurrency exchanges allow users to trade different crypto assets with BTC or ETH after having already exchanged fiat currency for one of those cryptocurrencies. Coinbase and Kraken are the main avenue for fiat money to enter into the cryptocurrency ecosystem.
Function and History
Crypto exchanges can be market-makers that take bid/ask spreads as a commission on the transaction for facilitating the trade, or more often charge a small percentage fee for operating the forum in which the trade was made. Most crypto exchanges operate outside of Western countries, enabling them to avoid stringent financial regulations and the potential for costly and lengthy legal proceedings. These entities will often maintain bank accounts in multiple jurisdictions, allowing the exchange to accept fiat currency and process transactions from customers all over the globe.
The concept of a digital asset exchange has been around since the late 2000s and the following initial attempts at running digital asset exchanges foreshadows the trouble involved in attempting to disrupt the operation of the fiat currency baking system. The trading of digital or electronic assets predate Bitcoin’s creation by several years, with the first electronic trading entities running afoul of the Australian Securities and Investments Commission (ASIC) in late 2004. Companies such as Goldex, SydneyGoldSales, and Ozzigold, shut down voluntarily after ASIC found that they were operating without an Australian Financial Services License. E-Gold, which exchanged fiat USD for grams of precious metals in digital form, was possibly the first digital currency exchange as we know it, allowing users to make instant transfers to the accounts of other E-Gold members. At its peak in 2006 E-Gold processed $2 billion worth of transactions and boasted a user base of over 5 million people.
Popular Exchanges
Here we will give a brief overview of the features and operational history of the more popular and higher volume exchanges because these are the platforms to which newer traders will be exposed. These exchanges are recommended to use because they are the industry standard and they inspire the most confidence.
Bitfinex
Owned and operated by iFinex Inc, the cryptocurrency trading platform Bitfinex was the largest Bitcoin exchange on the planet until late 2017. Headquartered in Hong Kong and based in the US Virgin Island, Bitfinex was one of the first exchanges to offer leveraged trading (“Margin trading allows a trader to open a position with leverage. For example — we opened a margin position with 2X leverage. Our base assets had increased by 10%. Our position yielded 20% because of the 2X leverage. Standard trades are traded with leverage of 1:1”) and also pioneered the use of the somewhat controversial, so-called “stable coin” Tether (USDT).
Binance
Binance is an international multi-language cryptocurrency exchange that rose from the mid-rank of cryptocurrency exchanges to become the market dominating behemoth we see today. At the height of the late 2017/early 2018 bull run, Binance was adding around 2 million new users per week! The exchange had to temporarily disallow new registrations because its servers simply could not keep up with that volume of business. After the temporary ban on new users was lifted the exchange added 240,000 new accounts within two hours.
Have you ever thought whats the role of the cypto exchanges? The answer is simple! There are several different types of exchanges that cater to different needs within the ecosystem, but their functions can be described by one or more of the following: To allow users to convert fiat currency into cryptocurrency. To trade BTC or ETH for alt coins. To facilitate the setting of prices for all crypto assets through an auction market mechanism. Simply put, you can either mine cryptocurrencies or purchase them, and seeing as the mining process requires the purchase of expensive mining equipment, Cryptocurrency exchanges can be loosely grouped into one of the 3 following exchange types, each with a slightly different role or combination of roles.
Have you ever thought about what are the types of Crypto exchanges?
  1. Traditional Cryptocurrency Exchange: These are the type that most closely mimic traditional stock exchanges where buyers and sellers trade at the current market price of whichever asset they want, with the exchange acting as the intermediary and charging a small fee for facilitating the trade. Kraken and GDAX are examples of this kind of cryptocurrency exchange. Fully peer-to-peer exchanges that operate without a middleman include EtherDelta, and IDEX, which are also examples of decentralized exchanges.
  2. Cryptocurrency Brokers: These are website or app based exchanges that act like a Travelex or other bureau-de-change. They allow customers to buy or sell crypto assets at a price set by the broker (usually market price plus a small premium). Coinbase is an example of this kind of exchange.
  3. Direct Trading Platform: These platforms offer direct peer-to-peer trading between buyers and sellers, but don’t use an exchange platform in doing so. These types of exchanges do not use a set market rate; rather, sellers set their own rates. This is a highly risky form of trading, from which new users should shy away.
To understand how an exchange functions we need only look as far as a traditional stock exchange. Most all the features of a cryptocurrency exchange are analogous to features of trading on a traditional stock exchange. In the simplest terms, the exchanges fulfil their role as the main marketplace for crypto assets of all kinds by catering to buyers or sellers. These are some definitions for the basic functions and features to know: Market Orders: Orders that are executed instantly at the current market price. Limit Order: This is an order that will only be executed if and when the price has risen to or dropped to that price specified by the trader and is also within the specified period of time. Transaction fees: Exchanges will charge transactions fees, usually levied on both the buyer and the seller, but sometimes only the seller is charged a fee. Fees vary on different exchanges though the norm is usually below 0.75%. Transfer charges: The exchange is in effect acting as a sort of escrow agent, to ensure there is no foul play, so it might also charge a small fee when you want to withdraw cryptocurrency to your own wallet.
Regulatory Environment and Evolution
Cryptocurrency has come a long way since the closing down of the Silk Road darknet market. The idea of crypto currency being primarily for criminals, has largely been seen as totally inaccurate and outdated. In this section we focus on the developing regulations surrounding the cryptocurrency asset class by region, and we also look at what the future may hold.
The United States of America
A coherent uniform approach at Federal or State level has yet to be implemented in the United States. The Financial Crimes Enforcement Network published guidelines as early as 2013 suggesting that BTC and other cryptos may fall under the label of “money transmitters” and thus would be required to take part in the same Anti-money Laundering (AML) and Know your Client (KYC) procedures as other money service businesses. At the state level, Texas applies its existing finance laws. And New York has instituted an entirely new licensing system.
The European Union
The EU’s approach to cryptocurrency has generally been far more accommodating overall than the United States, partly due to the adaptable nature of pre-existing laws governing electronic money that predated the creation of Bitcoin. As with the USA, the EU’s main fear is money laundering and criminality. The European Central Bank (ECB) categorized BTC as a “convertible decentralized currency” and advised all central banks in the EU to refrain from trading any cryptocurrencies until the proper regulatory framework was put in place. A task force was then set up by the European Parliament in order to prevent and investigate any potential money laundering that was making use of the new technology.
Likely future regulations for cryptocurrency traders within the European Union and North America will probably consist of the following proposals: The initiation of full KYC procedures so that users cannot remain fully anonymous, in order to prevent tax evasion and curtail money laundering. Caps on payments that can be made in cryptocurrency, similar to caps on traditional cash transactions. A set of rules governing tax obligations regarding cryptocurrencies Regulation by the ECB of any companies that offer exchanges between cryptocurrencies and fiat currencies It is less likely for other countries to follow the Chinese approach and completely ban certain aspects of cryptocurrency trading. It is widely considered more progressive and wiser to allow the technology to grow within a balanced accommodative regulatory framework that takes all interests and factors into consideration. It is probable that the most severe form of regulation will be the formation of new governmental bodies specifically to form laws and exercise regulatory control over the cryptocurrency space. But perhaps that is easier said than done. It may, in certain cases, be incredibly difficult to implement particular regulations due to the anonymous and decentralized nature of crypto.
Behavior of Cryptocurrency Investors by Demographic
Due to the fact that cryptocurrency has its roots firmly planted in the cryptography community, the vast majority of early adopters are representative of that group. In this section we cover the basic structure of the cryptocurrency market cycle and the makeup of the community at large, as well as the reasons behind different trading decisions.
The Cryptocurrency Market Cycle
Bitcoin leads the bull rally. FOMO (Fear of missing out) occurs, the price surge is a constant topic of mainstream news, business programs cover the story, and social media is abuzz with cryptocurrency chatter. Bitcoin reaches new All Timehigh (ATH) Market euphoria is fueled with even more hype and the cycle is in full force. There is a constant stream of news articles and commentary on the meteoric, seemingly unstoppable rise of Bitcoin. Bitcoin’s price “stabilizes”, In the 2017 bull run this was at or around $14,000. A number of solid, large market cap altcoins rise along with Bitcoin; ETH & LTC leading the altcoins at this time. FOMO comes into play, as the new ATH in market cap is reached by pumping of a huge number of alt coins.
Top altcoins “somewhat” stabilize, after reaching new all-time highs. The frenzy continues with crypto success stories, notable figures and famous people in the news. A majority of lesser known cryptocurrencies follow along on the upward momentum. Newcomers are drawn deeper into crypto and sign up for exchanges other than the main entry points like Coinbase and Kraken. In 2017 this saw Binance inundated with new registrations. Some of the cheapest coins are subject to massive pumping, such as Tron TRX which saw a rise in market cap from $150 million at the start of December 2017 to a peak of $16 billion! At this stage, even dead coins or known scams will get pumped. The price of the majority of cryptocurrencies stabilize, and some begin to retract. When the hype is subsiding after a huge crypto bull run, it is a massive sell signal. Traditional investors will begin to give interviews about how people need to be careful putting money into such a highly volatile asset class. Massive violent correction begins and the market starts to collapse. BTC begins to fall consistently on a daily basis, wiping out the insane gains of many medium to small cap cryptos with it. Panic selling sweeps through the market. Depression sets in, both in the markets, and in the minds of individual investors who failed to take profits, or heed the signs of imminent collapse. The price stagnation can last for months, or even years.
The Influence of Age upon Trading
Did you know? Cryptocurrencies have been called “stocks for millennials” According to a survey conducted by the Global Blockchain Business Council, only 5% of the American public own any bitcoin, but of those that do, an overwhelming majority of 71% are men, 58% of them are between the ages of 18 and 35, and over half of them are minorities. The same survey gauged public attitude toward the high risk/high return nature of cryptocurrency, in comparison to more secure guaranteed small percentage gains offered by government bonds or stocks, and found that 30% would rather invest $1,000 in crypto. Over 42% of millennials were aware of cryptocurrencies as opposed to only 15% of those ages 65 and over. In George M. Korniotis and Alok Kumar’s study into the effects of aging on portfolio management and the quality of decisions made by older investors, they found “that older and experienced investors are more likely to follow “rules of thumb” that reflect greater investment knowledge. However, older investors are less effective in applying their investment knowledge and exhibit worse investment skill, especially if they are less educated and earn lower income.”
Geographic Influence upon Trading
One of the main drivers of the apparent seasonal ebb and flow of cryptocurrency prices is the tax situation in the various territories that have the highest concentrations of cryptocurrency holders. Every year we see an overall market pull back beginning in mid to late January, with a recovery beginning usually after April. This is because “Tax Season” is roughly the same across Europe and the United States, with the deadline for Income tax returns being April 15th in the United States, and the tax year officially ending the UK on the 6th of April. All capital gains must be declared before the window closes or an American trader will face the powerful and long arm of the IRS with the consequent legal proceedings and possible jail time. Capital gains taxes around the world vary from jurisdiction to jurisdiction but there are often incentives for cryptocurrency holders to refrain from trading for over a year to qualify their profits as long term gain when they finally sell. In the US and Australia, for example, capital gains are reduced if you bought cryptocurrency for investment purposes and held it for over a year. In Germany if crypto assets are held for over a year then the gains derived from their sale are not taxed. Advantages like this apply to individual tax returns, on a case by case basis, and it is up to the investor to keep up to date with the tax codes of the territory in which they reside.
2013 Bull run vs 2017 Bull run price Analysis
In late 2016 cryptocurrency traders were faced with the task of distinguishing between the beginnings of a genuine bull run and what might colorfully be called a “dead cat bounce” (in traditional market terminology). Stagnation had gripped the market since the pull-back of early 2014. The meteoric rise of Bitcoin’s price in 2013 peaked with a price of $1,100 in November 2013, after a year of fantastic news on the adoption front with both Microsoft and PayPal offering BTC payment options. It is easy to look at a line going up on a chart and speak after the fact, but at the time, it is exceeding difficult to say whether the cat is actually climbing up the wall, or just bouncing off the ground. Here, we will discuss the factors that gave savvy investors clues as to why the 2017 bull run was going to outstrip the 2013 rally. Hopefully this will help give insight into how to differentiate between the signs of a small price increase and the start of a full scale bull run. Most importantly, Volume was far higher in 2017. As we can see in the graphic below, the 2017 volume far exceeds the volume of BTC trading during the 2013 price increase. The stranglehold MtGox held on trading made a huge bull run very difficult and unlikely.
Fraud & Immoral Activity in the Private Market
Ponzi Schemes Cryptocurrency Ponzi schemes will be covered in greater detail in Lesson 7, but we need to get a quick overview of the main features of Ponzi schemes and how to spot them at this point in our discussion. Here are some key indicators of a Ponzi scheme, both in cryptocurrencies and traditional investments: A guaranteed promise of high returns with little risk. Consistentflow of returns regardless of market conditions. Investments that have not been registered with the Securities and Exchange Commission (SEC). Investment strategies that are a secret, or described as too complex. Clients not allowed to view official paperwork for their investment. Clients have difficulties trying to get their money back. The initial members of the scheme, most likely unbeknownst to the later investors, are paid their “dividends” or “profits” with new investor cash. The most famous modern-day example of a Ponzi scheme in the traditional world, is Bernie Madoff’s $100 billion fraudulent enterprise, officially titled Bernard L. Madoff Investment Securities LLC. And in the crypto world, BitConnect is the most infamous case of an entirely fraudulent project which boasted a market cap of $2 billion at its peak.
What are the Exchange Hacks?
The history of cryptocurrency is littered with examples of hacked exchanges, some of them so severe that the operation had to be wound up forever. As we have already discussed, incredibly tech savvy and intelligent computer hackers led by Alexander Vinnik stole 850000 BTC from the MtGox exchange over a period from 2012–2014 resulting in the collapse of the exchange and a near-crippling hammer blow to the emerging asset class that is still being felt to this day. The BitGrail exchange suffered a similar style of attack in late 2017 and early 2018, in which Nano (XRB) was stolen that was at one point was worth almost $195 million. Even Bitfinex, one of the most famous and prestigious exchanges, has suffered a hack in 2016 where $72 million worth of BTC was stolen directly from customer accounts.
Hardware Wallet Scam Case Study
In late 2017, an unfortunate character on Reddit, going by the name of “moody rocket” relayed his story of an intricate scam in which his newly acquired hardware wallet was compromised, and his $34,000 life savings were stolen. He bought a second hand Nano ledger into which the scammers own recover seed had already been inserted. He began using the ledger without knowing that the default seed being used was not a randomly assigned seed. After a few weeks the scammer struck, and withdrew all the poor HODLer’s XRP, Dash and Litecoin into their own wallet (likely through a few intermediary wallets to lessen the very slim chances of being identified).
Hardware Wallet Scam Case Study Social Media Fraud
Many gullible and hapless twitter users have fallen victim to the recent phenomenon of scammers using a combination of convincing fake celebrity twitter profiles and numerous amounts of bots to swindle them of ETH or BTC. The scammers would set up a profile with a near identical handle to a famous figure in the tech sphere, such as Vitalik Buterin or Elon Musk. And then in the tweet, immediately following a genuine message, follow up with a variation of “Bonus give away for the next 100 lucky people, send me 0.1 ETH and I will send you 1 ETH back”, followed by the scammers ether wallet address. The next 20 or so responses will be so-called sockpuppet bots, thanking the fake account for their generosity. Thus, the pot is baited and the scammers can expect to receive potentially hundreds of donations of 0.1 Ether into their wallet. Many twitter users with a large follower base such as Vitalik Buterin have taken to adding “Not giving away ETH” to their username to save careless users from being scammed.
Market Manipulation
It also must be recognized that market manipulation is taking place in cryptocurrency. For those with the financial means i.e. whales, there are many ways in which to control the market in a totally immoral and underhanded way for your own profit. It is especially easy to manipulate cryptos that have a very low trading volume. The manipulator places large buy orders or sell walls to discourage price action in one way or the other. Insider trading is also a significant problem in cryptocurrency, as we saw with the example of blatant insider trading when Bitcoin Cash was listed on Coinbase.
Examples of ICO Fraudulent Company Behavior
In the past 2 years an astronomical amount of money has been lost in fraudulent Initial Coin Offerings. The utmost care and attention must be employed before you invest. We will cover this area in greater detail with a whole lesson devoted to the topic. However, at this point, it is useful to look at the main instances of ICO fraud. Among recent instances of fraudulent ICOs resulting in exit scams, 2 of the most infamous are the Benebit and PlexCoin ICOs which raised $4 million for the former and $15 million for the latter. Perhaps the most brazen and damaging ICO scam of all time was the Vietnamese Pincoin ICO operation, where $660million was raised from 32,000 investors before the scammer disappeared with the funds. In case of smaller ICO “exit scamming” there is usually zero chance of the scammers being found. Investors must just take the hit. We will cover these as well as others in Lesson 7 “Scam Projects”.
Signposts of Fraudulent Actors
The following factors are considered red flags when investigating a certain project or ICO, and all of them should be considered when deciding whether or not you want to invest. Whitepaper is a buzzword Salad: If the whitepaper is nothing more than a collection of buzzwords with little clarity of purpose and not much discussion of the tech involved, it is overwhelmingly likely you are reading a scam whitepaper.
Signposts of Fraudulent Actors §2
No Code Repository: With the vast majority of cryptocurrency projects employing open source code, your due diligence investigation should start at GitHub or Sourceforge. If the project has no entries, or nothing but cloned code, you should avoid it at all costs. Anonymous Team: If the team members are hard to find, or if you see they are exaggerating or lying about their experience, you should steer clear. And do not forget, in addition to taking proper precautions when investing in ICOs, you must always make sure that you are visiting authentic web pages, especially for web wallets. If, for example, you are on a spoof MyEtherWallet web page you could divulge your private key without realizing it and have your entire portfolio of Ether and ERC-20 tokens cleaned out.
Methods to Avoid falling Victim
Avoiding scammers and the traps they set for you is all about asking yourself the right questions, starting with: Is there a need for a Blockchain solution for the particular problem that a particular ICO is attempting to solve? The existing solution may be less costly, less time consuming, and more effective than the proposals of a team attempting to fill up their soft cap in an ICO. The following quote from Mihai Ivascu, the CEO of Modex, should be kept in mind every time you are grading an ICO’s chances of success: “I’m pretty sure that 95% of ICOswill not last, and many will go bankrupt. ….. not everything needs to be decentralized and put on an open source ledger.”
Methods to Avoid falling Victim §2 Do I Trust These People with My Money, or Not?
If you continue to feel uneasy about investing in the project, more due diligence is needed. The developers must be qualified and competent enough to complete the objectives that they have set out in the whitepaper.
Is this too good to be true?
All victims of the well-known social media scams using fake profiles of Vitalik Buterin, or Bitconnect investors for that matter, should have asked themselves this simple question, and their investment would have been saved. In the case of Bitconnect, huge guaranteed gains proportional to the amount of people you can get to sign up was a blatant pyramid scheme, obviously too good to be true. The same goes for Fake Vitalik’s offer of 1 ether in exchange for 0.1 ETH.
Selling Cryptocurrencies, Several reasons for selling with the appropriate actions to take:
If you are selling to buy into an ICO, or maybe believe Ether is a safer currency to hold for a certain period of time, it is likely you will want to make use of the Ether pair and receive Ether in return. Obviously if the ICO is on the NEO or WANchain blockchain for example, you will use the appropriate pair. -Trading to buy into another promising project that is listing on the exchange on which you are selling (or you think the exchange will experience a large amount of volume and become a larger exchange), you may want to trade your cryptocurrency for that exchange token. -If you believe that BTC stands a good chance of experiencing a bull run then using the BTC trading pair is the suitable choice. -If you believe that the market is about to experience a correction but you do not want to take your gains out of the market yet, selling for Tether or “tethering up” is the best play. This allows you to keep your locked-in profits on the exchange, unaffected by the price movements in the cryptocurrency markets,so that you can buy back in at the most profitable moment. -If you wish to “cash out” i.e. sell your cryptocurrency for fiat currency and have those funds in your bank account, the best pair to use is ETH or BTC because you will likely have to transfer to an exchange like Kraken or Coinbase to convert them into fiat. If the exchange offers Litecoin or Bitcoin Cash pairs it could be a good idea to use these for their fast transaction time and low fees.
Selling Cryptocurrencies
Knowing when and how to sell, as well as strategies to inflate the value of your trade before sale, are important skills as a trader of any product or financial instrument. If you are satisfied that the sale itself of the particular amount of a token or coin you are trading away is the right one, then you must decide at what price you are going to sell. Exchanges exercise their own discretion as to which trading “pairs” they will offer, but the most common ones are BTC, ETH, BNB for Binance, BIX for Bibox etc., and sometimes Tether (USDT) or NEO. As a trader, you decide which particular cryptocurrency to exchange depending on your reason for making that specific trade at that time.
Methods of Sale
Market sell/Limit sell on exchange: A limit sell is an order placed on an exchange to sell as soon as (also specifically only if and when) the price you specified has been hit within the time limit you select. A market order executes the sale immediately at the best possible price offered by the market at that exact time. OTC (or Over the Counter) selling refers to sale of securities or cryptocurrencies in any method without using an exchange to intermediate the trade and set the price. The most common way of conducting sales in this manner is through LocalBitcoins.com. This method of cryptocurrency selling is far riskier than using an exchange, for obvious reasons.
The influence and value of your Trade
There are a number of strategies you can use to appreciate the value of your trade and thus increase the Bitcoin or Ether value of your portfolio. It is important to disassociate yourself from the dollar value of your portfolio early on in your cryptocurrency trading career simply because the crypto market is so volatile you will end up pulling your hair out in frustration following the real dollar money value of your holdings. Once your funds have been converted into BTC and ETH they are completely in the crypto sphere. (Some crypto investors find it more appropriate to monitor the value of their portfolio in satoshi or gwei.) Certainly not limited to, but especially good for beginners, the most reliable way to increase your trading profits, and thus the overall value and health of your portfolio, is to buy into promising projects, hold them for 6 months to a year, and then reevaluate. This is called Long term holding and is the tactic that served Bitcoin HODLers quite well, from 2013 to the present day. Obviously, if something comes to light about the project that indicates a lengthy set back is likely, it is often better to cut your losses and sell. You are better off starting over and researching other projects. Also, you should set initial Price Points at which you first take out your original investment, and then later, at which you take out all your profits and exit the project. That should be after you believe the potential for growth has been exhausted for that particular project.
Another method of increasing the value of your trades is ICO flipping. This is the exact opposite of long term holding. This is a technique in which you aim for fast profits taking advantage of initial enthusiasm in the market that may double or triple the value of ICO projects when they first come to market. This method requires some experience using smaller exchanges like IDEX, on which project tokens can be bought and sold before listing on mainstream exchanges. “Tethering up” means to exchange tokens or coins for the USDT stable coin, the value of which is tethered to the US Dollar. If you learn, or know how to use, technical analysis, it is possible to predict when a market retreatment is likely by looking at the price movements of BTC. If you decide a market pull back is likely, you can tether up and maintain the dollar value of your portfolio in tether while other tokens and coins decrease in value. The you wait for an opportune moment to reenter the market.
Market Behavior in Different Time Periods
The main descriptors used for overall market sentiment are “Bull Market” and “Bear Market”. The former describes a market where people are buying on optimism. The latter describes a market where people are selling on pessimism. Fun (or maybe not) fact: The California grizzly bear was brought to extinction by the love of bear baiting as a sport in the mid 1800s. Bears were highly sought after for their intrinsic fighting qualities, and were forced into fighting bulls as Sunday morning entertainment for Californians. What has this got to do with trading and financial markets? The downward swipe of the bear’s paws gives a “Bear market” its name and the upward thrust of a Bull’s horns give the “Bull Market” its name. Most unfortunately for traders, the bear won over 80% of the bouts. During a Bull market, optimism can sometimes grow to be seemingly boundless, volume is rising, and prices are ascending. It can be a good idea to sell or rebalance your portfolio at such a time, especially if you have a particularly large position in one holding or another. This is especially applicable if you need to sell a large amount of a relatively low-volume holding, because you can then do so without dragging the price down by the large size of your own sell order.
Learn more on common behavioral patterns observed so far in the cryptocurrency space for different coins and ICO tokens.
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Subreddit Stats: Buttcoin top posts from 2014-02-28 to 2019-01-15 01:31 PDT

Period: 1781.72 days
Submissions Comments
Total 1000 66504
Rate (per day) 0.56 37.31
Unique Redditors 546 7216
Combined Score 190256 613696

Top Submitters' Top Submissions

  1. 4165 points, 23 submissions: Tomatoshi
    1. Cryptocurrency Euthanasia Coaster (489 points, 127 comments)
    2. Mark Karpeles states Bitcoin has failed and is useless. (273 points, 95 comments)
    3. Vergin comedy gold leaks ahead of announcement (241 points, 159 comments)
    4. Incredibly "organic" pump minutes before Tether prints $300 million (237 points, 82 comments)
    5. In today's Creepto News : McAfee's Underground King of ICO analysts apparently a pedo (230 points, 99 comments)
    6. Dying Butter attempts to dox imaginary assassin. Gives him an imaginary name and non-existent address. (215 points, 70 comments)
    7. Back under 8K. Shall I get rid of my fiat? (210 points, 86 comments)
    8. President Maduro's computer hacked. Exit scam image discovered. (205 points, 12 comments)
    9. Come all ye faithful and get rekt margin trading (185 points, 59 comments)
    10. Lightning Network upgraded - super efficient diagram of super efficient payment channels running on top of super efficient blockchain (183 points, 73 comments)
  2. 2691 points, 10 submissions: Orbalisks
    1. Debating Bitcoin (747 points, 114 comments)
    2. 1 Bitcoin transaction uses over four times as much energy as 100,000 VISA transactions (492 points, 150 comments)
    3. Remember that model that the Bitcoin crowd constantly mocked? Turns out it was pretty much spot on... (346 points, 90 comments)
    4. MRW I see butters describing how they lost 40% on Verge so they went all in on Tron but lost another 30% so they went back to Bitcoin but are down 25% (216 points, 38 comments)
    5. The Parable of the Bagholder (201 points, 14 comments)
    6. Then they came for me (161 points, 18 comments)
    7. First. Global. Currency. (148 points, 55 comments)
    8. Verge creator desperately (and unsuccessfully) trying to cash out into USD on Coinbase; notes that "taxes are due"--an observation that conspicuously coincides with Verge's enigmatic crowdfunding campaign (143 points, 34 comments)
    9. Butter shares comical chart suggesting that Bitcoin is destined for 100% adoption, despite the fact that the chart both misrepresents how long Bitcoin has been around for and already shows that it is not being adopted as quickly as other technologies (120 points, 76 comments)
    10. First you pump, then you dump (117 points, 25 comments)
  3. 2556 points, 15 submissions: dgerard
    1. The OKEx margin trading disaster — how crypto margin trading goes wrong, and how the eye-watering margin leverage on crypto exchanges works in practice (306 points, 212 comments)
    2. "Attack of the 50 Foot Blockchain" is OUT NOW! (284 points, 98 comments)
    3. Reuters on OTC markets: "Less romantically, traders sometimes say 'butt' to mean bitcoin." we did it lads, be proud (268 points, 17 comments)
    4. How does Brave's "Basic Attention Token" work? By blatant fraud, of course! Twitter thread from one creator whose name and photo Brave is misusing (192 points, 173 comments)
    5. bullish on USD. it is clear USD is increasingly popular with past hodlers of the deprecated bit-Coin. USD has gone up hugely in just the past day against the b.t.C!! in the future it is posible with enough imagination that the US economy could run on USD ! in conclusion you should get into currency (186 points, 26 comments)
    6. Twitter thread of Bitcoin price predictions (164 points, 30 comments)
    7. "Kodak board members conveniently grant themselves shares the day before the announcement, a stock promoter with a checkered past is engaged for PR, and a group of German copyright trolls reinvent themselves as blockchain-enabled image platform managers." A scathing hedge-fund report on KodakCoin. (157 points, 44 comments)
    8. MERL Tech: Blockchain for International Development. "We documented 43 blockchain use-cases ... no documentation or evidence of the results blockchain was purported to have achieved in these claims ... Not one was willing to share data on program results." (143 points, 44 comments)
    9. Bitcoin’s stupendous power waste is green, apparently — bad excuses for Proof-of-Work [by me] (133 points, 112 comments)
    10. Bitcoin continues to be awesome for renewable energy! - "Bitcoin backlash as ‘miners’ suck up electricity, stress power grids in Central Washington" (130 points, 39 comments)
  4. 2541 points, 10 submissions: borderpatrol
    1. Buttcoin Foundation ROCKED as founder exposed to be PAID SHILL for Butterfly Labs (1269 points, 553 comments)
    2. Stop with the political and racist garbage (177 points, 119 comments)
    3. To the person who reports every single chart posted in this sub as "not a fucking log chart" (167 points, 40 comments)
    4. WE DID IT REDDIT! (166 points, 55 comments)
    5. Someone finally said "Buttcoin". And it's William Shatner (156 points, 39 comments)
    6. My new Bitcoin commercial idea. (140 points, 21 comments)
    7. Let's welcome /Buttcoin's newest honorary member of the mod/shill team, Peter Todd! (125 points, 54 comments)
    8. Satoshi Nakamoto is an anagram of "So a man took a shit." (118 points, 16 comments)
    9. Guess which convicted felon just fucked over another Bitcoin business? (112 points, 31 comments)
    10. You guys are the best (111 points, 81 comments)
  5. 2509 points, 12 submissions: JihanButt
    1. Hot (404 points, 19 comments)
    2. Made me check (and kek) (398 points, 49 comments)
    3. Mass adoption is here (257 points, 60 comments)
    4. New record for the fastest exit scam in human history (245 points, 23 comments)
    5. Meanwhile on 4chan bizbutt (210 points, 88 comments)
    6. TIL: Binance can exit scam at any given time and no one would be able to locate CZ or the Binance offices. Not even MtGOX was this shady. (200 points, 65 comments)
    7. Quality (172 points, 53 comments)
    8. Normies are shorting (137 points, 44 comments)
    9. CEO (lol) of shitcoin Titanium BUTT, high on cocaine during AMA (136 points, 16 comments)
    10. It begins... The biggest transfer of comedy gold in human history (122 points, 17 comments)
  6. 2470 points, 12 submissions: unitedstatian
    1. I can't tell why but this ICO doesn't look trustworthy to me (369 points, 47 comments)
    2. Cryptocurrency (332 points, 26 comments)
    3. Has crypto become a giant joke? (311 points, 60 comments)
    4. A Buttcoiner going shopping (248 points, 37 comments)
    5. There is only a 1% chance of successfully routing a $67 payment on the lightning network (229 points, 71 comments)
    6. Comedy gold over at bitcoin (179 points, 54 comments)
    7. The Four Commandments (148 points, 65 comments)
    8. Behold LN in it's full glory as two users fail to send a meager 100 Sats through a high liquidity hub (Bitrefill) due to poor route computation. (146 points, 76 comments)
    9. Jimmy Song giving advice on how to use Bitcoin as a method of payment lol! (143 points, 57 comments)
    10. This is my new favorite ICO. (130 points, 94 comments)
  7. 2037 points, 11 submissions: dyzo-blue
    1. Butter informs his tribe that he has decided to leave. Tribe kindly wishes him good luck and a happy new year. (510 points, 81 comments)
    2. STORE OF VALUE. (184 points, 32 comments)
    3. TIL: Apparently butters are mostly models who have meet-ups on boats. (167 points, 43 comments)
    4. Bitcoiner asked me if I was in the "crypto game" (165 points, 140 comments)
    5. Bitcoin’s energy consumption is growing at 20% per month and is effectively erasing decades of progress on renewable energy (160 points, 93 comments)
    6. Steve Bannon is creating a cryptocurrency to fund global fascist movements (155 points, 175 comments)
    7. Firesale! Firesale! All I see are CHEAP COINZ. (154 points, 130 comments)
    8. The electricity required for a single Bitcoin trade could power a house for a whole month (147 points, 81 comments)
    9. Who sees this pop-up and thinks, "Hmm, seems legit"? (146 points, 40 comments)
    10. From California's Governor Primary Ballot (126 points, 28 comments)
  8. 2035 points, 13 submissions: 18_points
    1. BitGrail insolvency due to people editing client-side javascript and withdrawing free NANO! (279 points, 115 comments)
    2. Butter rushes to exchange his iMac for a MacBook hours before return policy expires, doesn't copy his wallet seed. $170K SFYL, mass adoption imminent. (205 points, 102 comments)
    3. LA Times: The only currency worse than bitcoin is Venezuela’s (176 points, 78 comments)
    4. Butter makes $1.2mm, quits his job, proceeds to lose 80% (175 points, 76 comments)
    5. Bitcoin.com openly admits Tethers are backed by nothing (158 points, 99 comments)
    6. Tether CFO: "Tether may no longer continue to use the US dollar anchor in the future." (152 points, 80 comments)
    7. Aaaand it's gone.... Stablecoin basis closes shup after raising $133 million (151 points, 61 comments)
    8. Guy travels abroad paying with bitcoin. Just kidding, he couldn't pay with bitcoin - best he could do after 2 days trying was trade bitcoin for cash 20% below spot. (138 points, 62 comments)
    9. Because this chart never gets old ... (126 points, 46 comments)
    10. Tether crashing on Kraken, down to $0.98 (125 points, 69 comments)
  9. 1985 points, 6 submissions: cool_playa
    1. a shitcoin startup called Prodeum just exitscammed with millions of investor dollars and left them the following message on their site (1111 points, 170 comments)
    2. Cryptocurrencies: Last Week Tonight with John Oliver (HBO) (256 points, 72 comments)
    3. Charlie Lee gets put in his place (185 points, 29 comments)
    4. Vitalik rethinks his stance as a Libertarian due to the current cryptocurrency ecosystem. Regulations are actually good he says. LMAO. (180 points, 86 comments)
    5. Twitter CEO says Bitcoin is the future / Twitter bans cryptocurrencies from advertising on their platform. (129 points, 11 comments)
    6. Bubble, Bubble, Fraud and Trouble - New York Times article (124 points, 81 comments)
  10. 1916 points, 10 submissions: Cthulhooo
    1. Ladies and Gentlemen I have an innovative idea that will change the landscape of cryptospace forever. I present you the infinite reverse Ponzi scheme. (355 points, 237 comments)
    2. ETH is now officially a 2 digit shitcoin! (258 points, 110 comments)
    3. So this is how blood in the streets looks like... (215 points, 91 comments)
    4. Missed us? (211 points, 44 comments)
    5. The new paradigm (of spam) has arrived. (171 points, 45 comments)
    6. Attention all personnel. (168 points, 62 comments)
    7. Not only bloomberg or CNBC. Even national media all over the world are screaming about tether manipulation. This is good for buttcoin. (168 points, 42 comments)
    8. The biggest bagholders on the planet are actually institutions. Bought bitcoin for $40k (142 points, 44 comments)
    9. Millions of dollars stuck forever in a buttchain thanks to an international community effort to establish the largest comedy gold black hole up to date. (116 points, 28 comments)
    10. Smart ponzi FOMO3D round 1 ends way too early with a creative twist (112 points, 98 comments)

Top Commenters

  1. SnapshillBot (15642 points, 683 comments)
  2. Cthulhooo (11080 points, 1057 comments)
  3. Tomatoshi (10485 points, 577 comments)
  4. newprofile15 (7365 points, 477 comments)
  5. jstolfi (7325 points, 766 comments)
  6. JeanneDOrc (6318 points, 827 comments)
  7. friosc (5326 points, 244 comments)
  8. Woolbrick (5088 points, 318 comments)
  9. Crypto_To_The_Core (4838 points, 678 comments)
  10. HopeFox (4673 points, 331 comments)

Top Submissions

  1. I'm having an orgasm watching the prices dropping - upvote if you're a sick a degenerate like me by deleted (1456 points, 340 comments)
  2. Buttcoin Foundation ROCKED as founder exposed to be PAID SHILL for Butterfly Labs by borderpatrol (1269 points, 553 comments)
  3. a shitcoin startup called Prodeum just exitscammed with millions of investor dollars and left them the following message on their site by cool_playa (1111 points, 170 comments)
  4. And the returns have already begun. One person and a known reseller we get regularly. by cloud3514 (907 points, 278 comments)
  5. c o m p u t e r s c i e n c e by brokenAmmonite (856 points, 125 comments)
  6. U.S. Launches Criminal Probe into Bitcoin Price Manipulation by BitcoinTrolling101 (761 points, 218 comments)
  7. Debating Bitcoin by Orbalisks (747 points, 114 comments)
  8. TIL bitcoin is called the currency of the future because all currency transactions are confirmed in the distant future. by Thief_1 (720 points, 37 comments)
  9. M A T H E M A T I C A L L Y I M P O S S I B LE by NORATHEDESTROYER (693 points, 86 comments)
  10. This is the best take of crypto-currency that I've ever seen. by deleted (689 points, 137 comments)

Top Comments

  1. 1874 points: AlbertRammstein's comment in The OKEx margin trading disaster — how crypto margin trading goes wrong, and how the eye-watering margin leverage on crypto exchanges works in practice
  2. 1263 points: Mike_Prowe's comment in Buttcoin Foundation ROCKED as founder exposed to be PAID SHILL for Butterfly Labs
  3. 820 points: Slayer706's comment in Buttcoin Foundation ROCKED as founder exposed to be PAID SHILL for Butterfly Labs
  4. 577 points: deleted's comment in The OKEx margin trading disaster — how crypto margin trading goes wrong, and how the eye-watering margin leverage on crypto exchanges works in practice
  5. 571 points: cloud3514's comment in And the returns have already begun. One person and a known reseller we get regularly.
  6. 496 points: SnapshillBot's comment in a shitcoin startup called Prodeum just exitscammed with millions of investor dollars and left them the following message on their site
  7. 382 points: vytah's comment in Holy Satoshi! Butter pays 85Btc transaction fees for a 16Btc transaction. Is this the largest fee ever paid?
  8. 380 points: Tomatoshi's comment in It's already happening. GPU market is about to get really hot.
  9. 361 points: ShiteFlaps's comment in Why are you guys such salty fks?
  10. 331 points: -charlie-kelly-'s comment in a shitcoin startup called Prodeum just exitscammed with millions of investor dollars and left them the following message on their site
Generated with BBoe's Subreddit Stats (Donate)
submitted by subreddit_stats to subreddit_stats [link] [comments]

A word of caution. All major exchanges are not even fiat gateways. The actual fiat in the system is likely grossly overestimated. Crypto is decoupled from USD. Implications.

So we have a situation in which:
1) 80% or more of trading is in USDT (tether)
2) Coinmarket cap is an accomplice to Bitfinex which implies USDT-USD parity. To which degree this is intentional, irresponsibility or just incompetence I would not know. Basically conimarketplace lumps all USDT trades and prices with actual USD trades and prices. If you go there https://coinmarketcap.com/ and try to select PAIR, you get THIS. No USDT, even though most exchanges are USDT. Even if most of liquidity is USDT. Again, this is a major factor in implying parity along with what Bitfinex/Tether try to do. As if this wasn't enough, they also willingly or stupidly inflate USDT price itself. I have to remind you Coinmarketcap is THE point of reference for all cryptosphere. It's oscilating Alexa rank is 100-400. Betfair (real life gambling company) for example uses coinmarket price average for their own system. etc.
3) If/when tethebitfinex crashes, not only does bitfinex crash, it will crash all crypto pairings using USDT on all exchanges using USDT.
4) There are very few fiat gateways. Until recently I assumed the major(top) exchanges have some kind of fiat pairing. I mean.. any respectable exchange would have some way of actually getting money in and out, right? I didn't even think to check. Well, they don't. Literally all the major exchanges are USDT (and/or another stablecoin or proprietary coin) and nothing else. No USD, no EUR, no fiat whatsoever. https://coinmarketcap.com/rankings/exchanges/ . Only the 11th one has actual USD pairing. Didn't check lower but most exchanges don't have fiat. I did a full check on Binance myself as it's the biggest exchange and I had an account there for lulz. There is no fiat.
What does this mean? It means that an allegedly 200 BILLION market cap of all crypto has a fiat gateway of only a couple of exchanges. Most exchanges not using any fiat are not only immune to the risk, they offload risk on the much smaller exchanges that are fiat gateways. And on clients, of course. The cash side of the actual exchanges would need to have to siphon even a fraction of this are unimaginable. If any of these exchanges use crypto to evaluate their own fiat reserves (it is illegal but crypto is hardly regulated or audited), they're fucked.
5) If the first four points looked bad, this one is by far the worst. The system is running on a presumed liquidity provided by Tether and on presumed USD capital. Even if tether was legit it's just 2b USD rolling 200b USD. And that 200b USD is just presumed quantity of USD that is in. We don't know how much USD is in the system, there could be and there probably is way less, as over the past 8 years or so crypto ran mostly on funny exchanges that could "provide" whatever USD value they wanted. More so, even if they went bust, people would usually get to withdraw crypto and store it on some other exchange. Even when an exchange was slowly withering, people just pulled out crypto and the exchange actual liquidity was hardly tested out. Or btc-e crashing or MtGox crashing. Their cash side crashed but "crypto" side did not crash. It was bailed out so to speak. So we have crypto running around that should've been worth 1/10 or 1/100 of it's price but it's instead running on par value with crypto on legit exchanges. This grossly inflates price.
Even if tether is legit, it can be drained in a couple of hours. What happens to the pairings of crypto/USDT? People just trade one bitcoin at the presumable price of 6k for 6k USDT that are 100% backed but have no value because there's no USD in the treasury? Who is stupid enough to deposit USD there to get stuck waiting for another fool to bail him out by getting himself stuck?
Even if tether is 1% it holds much more assumed value, which is the actual issue. Let's say only adds 1 cent to a real dollar market buy order for example. Each buy order made in a system that implies USDT:USD parity is now worth 1% more than a true USD purchase. Now repeat that buy order millions of times. Each added value comes from USDT injection and USDT has to be liquid on the way down as well. It's added value to the market value is not it's market cap.
As I was saying, all the exchanges that are not holding any fiat are immune to any crash or actual liability. If/when cryptos fail, they'll give you back any number of cryptos/stablecoins you had, even if they're worthless. It's just entries in a database. If/when USDT fails, all it's corresponding crypto prices will go to infinity. If you're holding any USDT, you can't get out of the exchange because 1 btc will cost infinity. If you're in any margin position, no matter where your stops are you'll get margin called instead, as stops are just suggestions in high/extreme volatility. You can't get out through fiat cause there's no fiat.
Your only hope is you were actually holding crypto and they don't block withdrawals. Best case scenario you move your crypto to a fiat gateway exchange and hope to cash out there as fast as possible because it will have had become evident that cryptos were overvalued because of USDT (and even hypothetical USD in the system). Will most likely be too late as people that were already in fiat gateway exchanges already sold/cashed out. There will be enormous sell pressure. And no buyers.
The whole stablecoin issuance is idiotic and I just hope it crashes now and we won't see another bubble built on presumed capital, cause that will hurt way more people. All of this is a mess. Crypto is completely decoupled from real fiat now. The potential money that are in the crypto sphere is exponentially greater than available money to trade out of. Or maybe we should be grateful for stablecoins for finally crashing a system that would've crashed anyway in the long run.
submitted by 5ty54y5yh45 to CryptoMarkets [link] [comments]

Nano s

Hi, several years ago when bitcoin was around £1. I got just enough for what I needed forgot about it & with the odd 50p or so left in the btc wallet now worth quite a lot more lol
I got a nano s so I can look at storing the xlm I also got then etc
Question is if I say have accounts with Kraken, binance, coinbase etc Coins themselves are not stored on the cold wallet, so if the site/exchange is down permanently (aka mtgox type thing)
Do the relevant apps still work for the coin in question if exchange down, just wanna clarify
Cheers.
submitted by Djarvis1 to Crypto_General [link] [comments]

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