Lost my Bitcoin Wallet Login but have my Private Key I think?
Like the title says I cant access my wallet however I made a backup of my private key a few years ago. The format does not make sense to me though. Parts of it resemble what I think the key should look like except there is + symbols, dashes and forward slashes separating strings of numbers/letters. Its also a few lines long. Appears to be more than one key? No idea what do to do. Any insight or direction would be appreciated.
When you lose bitcoin, where does it actually go? Does it go somewhere?
Let's suppose, someone shares their wallet address with me and I send them BTC. For some reason, I accidentally make changes in that wallet, like replacing the character in it. The transaction still occurs but the person doesn't get the BTC. Does that bitcoin go anywhere? I might be wrong but I'm sure it doesn't vanishes in the thin air. I'm sorry for bad English.
Was going to buy something off Silk Road and pussied out and forgot about it. Probably had around 10 BTCs? My emails show Bitme and VirWox. No clue on private key but I know transaction ids. Any chance as to how I can access those funds? I’m so retarded. Is it game over if I don’t know my Private Key or can they be traced by looking at my transaction Ids?? And somehow bring the dot together. Been through multiple laptops in between so not stored in hardware. I could try to search but how many digits are they usually for that time period? Like do they start with some number or letter? What’s the length size? I wonder if I can search for a string using python by getting my email API and search for the string that fits the mold. I’m done if I wrote it on some post it’s.
I imagine plenty of people have forgotten about small amounts of Bitcoin or lost a password. What happens to it? There's no authority in charge of it. A traditional bank can track your descendants. Or even seize the funds at some point. Cash can be lost and it doesn't affect the money supply. With a finite supply, what happens to all the bitcoins in the lost and forgotten accounts?
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🔥Not your keys, not your coins : Why you should not use Paypal for Bitcoin
Today, PayPal announced that they will be launching a cryptocurrency digital wallet for buying, selling and storing Bitcoin, Ethereum, Bitcoin Cash and Litecoin. This confirms rumors which circulated earlier this year, and it is seen as a significant milestone by many in the community. A milestone it may be, but it will impact millions of daily users who have, until now, never considered getting into cryptocurrency. For them, PayPal will be the leading authority in a space that it has long sought to discredit. Over 221 Billion dollars were transacted in Q2 of 2020 using Paypal. That represents a rise of 10% in volume in just six months. PayPal is growing and dominating online payments as well as other services such as credit and insurance. It has a long-established reputation of occasionally freezing user funds and censoring payments that conflict with its outlook but the payments giant continues to hold relevance where Bitcoin should have long overtaken it. Perhaps this news marks the beginning of a transition? Is PayPal’s announcement good news for Bitcoin? Until very recently, PayPal was anti-crypto. Writing in 2018, ex-CEO Bill Harris called Bitcoin “the greatest scam ever”, so what’s changed? This sudden turnaround is encouraging, especially as private companies like Microstrategy and Square make grandiose announcements about their own crypto diversification. Should the community embrace them with open arms? After all, this is the start of mass adoption we’ve all been waiting for, right? When a household brand like PayPal starts selling Bitcoin, it’s probably not because they want to spur healthy adoption. In the press release announcing their new cryptocurrency service, PayPal sends out mixed messages. On one hand, the service will be entirely custodial, meaning users will not have the key to their own coins, while on the other they intend to “provide account holders with educational content to help them understand the cryptocurrency ecosystem”. The idea that anyone informed about bitcoin would agree to not holding their private keys might indicate that this educational content will overlook the fundamental rule of “Not your keys; not your coins”. If millions of newcomers are onboarded to Bitcoin by PayPal, there could be a very serious information gap that jeopardizes their experience and undermines key principles of cryptocurrency. This statement from their FAQ is, in practical terms, false: “You own the Cryptocurrency you buy on PayPal but will not be provided with a private key.” No-one should consider money held entirely by a third party as owned by them. Time after time, exchanges have lost user funds, often leaving them with no recourse. A benefit for some will be a promise of greater regulation, where funds can be insured and new users may feel more comfortable than dealing with cryptocurrency exchanges directly, but they will be restricted from actually utilizing their coins. The only reasons to own Bitcoin which cannot be used, would be to invest for the long term, which is incredibly reckless to do when your funds are held by a third party, or speculate on its price, which again, would be introducing the masses to financial mechanisms they do not understand. Is PayPal positioned to be a cryptocurrency leader? As it steps into the forefront, PayPal will be closely watched by companies, institutions, and consumers. While they can boast of “digital payments expertise”, they have historically taken an aggressive stance against users who bought cryptocurrency on exchanges, citing their acceptable use policy, forbidding transactions which “involve currency exchanges or check cashing businesses”. The fact that this clause remains in their policy suggests that they intend to limit users to use only their platform for cryptocurrency, stifling competition and preventing users from ever withdrawing their cryptocurrency to the safety of a wallet they control the keys to. That said, there is something to be said for PayPal’s statement that they will “enable cryptocurrency as a funding source for digital commerce at its 26 million merchants”. Currently, the options for cryptocurrency funding are in their infancy, and Bitcoin loans could see future growth. There is only one thing about PayPal’s announcement that long-term hodlers will be celebrating today: the pump in price. Long-term, if PayPal proceeds without consulting the community and letting their users control their own keys, it offers no value to the space. The greatest risk is that the clout they carry in traditional electronic payments will be interpreted as expertise in crypto. This would threaten the expert advice so carefully crafted by our community, which could be drowned out by the misinformed masses that PayPal brings to the space. For now, no-one can tell how it will turn out, but there are big concerns to address before informed users will turn to PayPal. Welcome PayPal’s initiative with open arms, but by no means look to them for leadership. At best, this announcement indicates that they may fear sinking into irrelevance. *Do not use PayPal for Bitcoin; there are many other places to buy crypto which will let you keep ownership of your coins. * PayPal is conceding to Bitcoin, and the many other aspirational, educational projects within the community should be highlighted to prevent newcomers from falling into a trap of trusting one of Bitcoin’s greatest long-term adversaries. Source : https://blog.trezor.io/why-you-should-not-use-paypal-for-bitcoin-f6e2d436ca96
Usually, bull markets attract a lot of new investors - although speculators should be the right word here - and as usual, a lot of them are going to be crushed a way or another. First, before putting a single dollar, euro or whatever in the market, you should read a lot to know exactly what you're looking for. Are you here for the tech and/or the cypherpunk ethos ? Great, there's lot of resources out there (my links are cleaned but as always, do your due diligence) :
The Bitcoin Whitepaper, the one and only : bitcoin.org/bitcoin.pdf Since I'm linking to bitcoin.org, friendly reminder to avoid bitcoin.com, owned by a former supporter now con-artist Roger Ver.
Andreas Antonopoulos website : https://aantonop.com Andreas is one of best guys able to educate on bitcoin and its properties, for free, which helps.
Jameson Lopp website : lopp.net Jameson is a member of Bitcoin Core, cypherpunk, also able to educate a lot. His website is full of free resources and other links. You'll have a lot to read.
Hal Finney : he's unfortunately dead but I would advise to read about Hal Finney, the first to receive bitcoin Satoshi. A great cryptographer, the inventor of the first reusable PoW and one of the first bitcoin supporters. You'll be able to find his messages on this old forum Bitcoin Talk, by the way you'll be able to find the first chats about bitcoin on this forum bitcointalk.org
Monero website : getmonero.org Yep, I know it's gonna be controversial to post an altcoin link but personally, I think that Monero (aka XMR) is the only other coin with a big cypherpunk community, decentralized, and able to help newcomers with a great sense of responsibility, since the ethos here is to save privacy.
What Bitcoin Did : of course, Peter is controversial but I love him and I find his former blog and his podcasts very needed because he doesn't oversell himself. Pete knows that he's not a tech guy (like many of us) and just wants to spread the word, I think he does a good job with this.
Now, you've read and you want to put some skin in the game. Several exchanges are acceptable, a lot of aren't, be careful and assume that none really are (know that I won't post any ref links) :
to me, the best, although it's UI is quite old : Kraken €/$/pound/swiss franc on-off ramp
Coinbase and Coinbase Pro Difficult not to mention Coinbase, although I can't stand Brian Armstrong and the way they are doing their best to support scams currently. You should rather use Coinbase Pro if you have to since the fees are much lower.
Binance Binance came later than the previous ones but has managed to take most of the market. Now, you should remember what I said about being careful.
Huobi The biggest chinese exchange and they work closely with chinese official. Again, careful.
Bittrex Once at the top, now somewhere in the limbs.
A lot of new comers came recently like btse, ftx, feel free to try them while always keeping in mind that once your money is on exchanges, it's not yours anymore.
This was for centralized exchanges aka CEX. Talking about custodial, you'll need wallets to store your (bit)coins. Always try to use non-custodial wallets, which means wallets that give you your private keys. This way, if the software goes down, you can always retreive your money. Now, I won't link to all the existing wallets but will advise you to buy hardware wallets (trezor or ledger but there are others) or to create (on off-gap computers) paper wallets you're able to store safely (against all risks, not only robbery but housefire). You also could use your memory with brain wallets but, my gosh, I wouldn't trust myself. For Bitcoin (or even Litecoin), Electrum software can do a good job (but save your keys). AGAIN, DON'T KEEP YOUR SAVINGS ON AN EXCHANGE Now, about trading : it's been repeated and repeated but don't chase pumps and altcoins. Yep, it's probably the fastest way to make money. It's also the fastest to lose it. I won't lie : I made good money during the 2017-bullrun and I took profits but I also forgot to sell some shitcoins thinking it would keep going up, now I'm still holding these bags (although I don't really care). I know that a lot forgot to take profits. Take profits, always take profits, whatever your strategy is. Don't fall for people trying to sell you their bags, for ICOs trying to sell you a product which isn't released yet and obviously, don't fall for people asking for your private key. Also, know that there's two endgames : accumulating bitcoin or fiat. I'm rather in the first team but whatever your strategy is, take profits. (Yes, I know, some will say accumulating ethereum or something else). It's true that a lot of ethereum holders made a lot of money during the last bullrun (ethereum helped me make money too) but I'm really biased in favor of bitcoin (and monero). So, pick your coin but again, do your due diligence. A lot of people here or there will talk about the best tech, the fact that bitcoin is old and slow. I would need another post to go further on this point but know that a lof of air flight systems are old too but reliable. Trustless and reliable is the point here. This is the post from someone who bought bitcoin seven or six years ago, who lost part of them, who spent part of them (but don't regret this at all), who is still learning and I hope it will help others, although it would need a book to be complete.
How much help can Hierarchical Deterministic trees of keys help with key management for non-expert users?
I've recently been made aware of BIP32, which was invented to make "Hierarchical Deterministic Wallets" (HD wallets) in BitCoin. I was wondering what uses this could have outside crypto currencies most notably for your "regular" cypherpunk using tools like GPG or Age to communicate with their web of trust. A deterministic tree of key pairs basically works like this: you start with a root key pair, that must be generated once and never lost or compromised. Then you generate sub-keys by hashing that root key with an easily remembered index). If a sub-key is lost, it can be re-generated from the root key. Now, BIP32 has two ways of generating sub keys, each with their own tradeofs. Note: I'll use the following names from now on:
G -- Generator of the group (public constant) a -- root private key A = a.G -- root public key b -- child private key B = b.G -- child public key. i -- public index (each child key has its own unique index)
Hardened keys are generated from the private half of the root key (over-simplified for clarity):
b = KDF(a, i) B = b.G
Key derivation can't be reversed, so if the child key b happens to be compromised, the root key a is still safe. The advantage of the deterministic generation is that if you lose the child key (you dumped your cell phone, your hard drive fried…) you can re-generate it from the root key, and pretend you never lost it. Non-hardened keys are generated from the public half of the root key, such that even third parties can generate it:
z = KDF(A, i) Z = z.G b = a + z -- modulo group order B = A + Z B = a.G + z.G B = (a+z).G B = b.G
Anyone can generate the public key, but generating the private key requires knowledge of the root private key. As far as I know, this is safe, because breaking this scheme would mean that we have solved the Discrete Logarithm Problem. However, if a non-hardened child key b is compromised, so is the root key. z is public (derived from the public root key), so knowing b easily reveals a:
b = a + z a = b - z
Unless I'm missing something, this means we should not store non-hardened key pairs less securely than we store the root key itself.
Is there a compelling use case?
I was wondering how useful those could be, compared to a simple hierarchy of certified keys, where child keys are generated randomly, and simply signed by their parent key? With those simple hierarchies, you'd simply rotate keys from time to time, and other people would know to trust the new key based on certificate from the parent (or chain of ancestors). If you lose a key, you simply rotate (and sign) a new one. One obvious advantage of deterministic hardened keys is that we can achieve continuity without relying on a certificate. We can afford to lose them even if we don't have an easy way to rotate them. But… aren't we supposed to rotate keys to begin with? Then there are the deterministic non hardened keys. I'm not sure what they bring to the table exactly: with Bitcoin, they help you make wallets on the fly without giving your root key to the wallet factory. If I understand correctly, compromising the wallet factory may compromise your identity (we can link its generated keys with your own public key by knowing the indices), but it won't compromise your money (the private halves are still safe, so only you can transfer the coins away from those wallets). Outside of crypto currencies however, I'm not sure: there's little point sending a message to a non-hardened child key instead of its parent key, since a compromise of the child key is just as bad as compromise of its aren't. One could still generate child keys without revealing the indices, but if you're anonymous, why not just generate a one-time key pair? Simply put: What a reasonable key management for the paranoid private citizen should look like?
Recovering private key of change address from Bitcoin Core
Hello, I am trying to help my mostly Bitcoin-ignorant friend with the following problem: A long time ago, he mined some BTC using Bitcoin Core client with unecrypted wallet.dat. Some years later, he added encryption to his client and sent some BTC to someone else ("transaction X"). Then he forgot the password of his wallet.dat. He had backed up the original (unencrypted) wallet.dat file so I managed to extract private key of his mining address from it and send his funds safely elsewhere. However, during "transaction X", around 0.7 BTC ended on a new "change address". I cannot access the private key of this "change address" because it was generated after the wallet was encrypted and he forgot the password. Or is there a way to find this private key, e.g. are the change addresses PKs in Bitcoin Core generated using some non-random derivation algorithm? I have access to both versions of the wallet.dat file (original unecrypted and later encrypted before "Transaction X") EDIT: Thanks everyone. The wallet was old (non HD) type so the change address' private key is probably lost forever, unless my friend remembers his password.
Not your keys, not your crypto -- is there no space for compromise?
You know, people are always asking if we should always always trust only ourselves and I think the answer is always more nuanced than yes or no. I wonder if, at some point, if you’re holding crypto and savings as part of a risk diversification strategy, then you also want to consider either taking out insurance on your savings — costly — or allocating some of it to something like Kraken, which would, as a Federal bank, include deposit insurances. It's a point of failure, for sure, just like keeping money at an exchange but perhaps it's never going to be so straightforward. I'm thinking of the future, where sooner or later, we'll need to think of inheritance. What if we don't have kids. What if we don't have spouses or close friends. What if they're not into Bitcoin and don't want to be. We still want to make sure they get it after we pass on. And not get lost forever when private keys are buried with us. We might then consider engaging such services for custodial services alongside inheritance plans — so when we die, for example, I can have some assurance that my will is carried out and a custodial entity, perhaps a bank like Kraken, would ensure my crypto is passed on properly. We use Electrum, Trezor, Bitamp or whatever other sole custody wallet because we believe that “not your keys, not your crypto” but we are acutely aware that everything is about context. Everything is about context, don't you agree?
If you have no record of the private key stored the funds are lost forever, or more correctly you just can never spend them again. As you never had the private key stored on a hard drive, there's not anything you can do to recover it. bitcoin-core private-key wallet-recovery. share improve this question follow asked Feb 28 '18 at 18:14. Sandeep Gupta Sandeep Gupta. 11 3 3 bronze badges. 2. You need a private key to send the coins away. If you don't have the private key, you can't send the coins. – ndsvw Feb 28 '18 at 18:32. add a comment 2 Answers Active Oldest Votes. 2. If you lose the private key for some ... How Do I Recover My Lost Bitcoin Wallet? By Prashant Jha. Bitcoin, the digital currency requires a wallet just like your real-money, but since the Bitcoin is a digital form of currency and it’s basically a bunch of computer codes, you need a specialized form of wallet to keep it safe against the hackers and theft.. Bitcoin wallets come in many shapes and forms and some of the prominent types ... In this informative article, I will show you the way how you can recover your bitcoin and a private key that is lost back with this step. Losing a hardware wallet or your telephone is inconvenient, but it should not be fatal. As long as you have back up your private key, recovering your bitcoin […] If you've lost your private key but still have the hardware wallet and remember the PIN, there's still hope. Transfer your cryptocurrency from the hardware wallet to a blockchain address (or addresses) that you DO hold the private key to. Do note that this could be a lengthy process. Although hardware wallets can hold multiple cryptocurrencies ...
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