9

There are two main ways someone can hold Bitcoin On an Exchange or Online Wallet or Privately on a computer in a wallet or offline private wallet For (1) you will need to obtain the username and password to access the account. For (2) you will need to login to the computer and, depending on your luck, if the wallet is not encrypted, you should have ...


9

In reverse order. Can we close a criminal's account? No. The owner of a bitcoin address can move all the money out of the address and then delete all copies of the key pair for the address. This would amount to closing the account, as the likelihood of someone having the same address in the future is infinitesimally small. However, moving bitcoin money out ...


7

"Accounts" are a concept limited to bitcoin-qt, and it's probably better to forget about them entirely. Each address has a corresponding private key, that you use to move bitcoin out of that address. A wallet is simply a collection of (address, address_key) pairs. Some people also use the term "wallet" to refer to the software that implements the wallet ...


5

It can't be closed, because there is no account. Likewise if he/she were using cash dollars for criminal purposes, it would not be possible to "close his wallet" as if it were some "account".


5

Addresses are not magically tied to the hardware you use. If you delete the file that contains the private keys for your addresses, you will lose them and thus lose access to your Bitcoin. Since it seems that you formatted your hard drive without making a backup of your wallet file, your private keys and thus your Bitcoin are lost. You may be able to ...


4

No one -- not a government, not the Bitcoin core developers -- can "close" a Bitcoin "account" because no central authority has unilateral control to do so. The closest it comes to "closing" an account is deleting the private key to an account, and such could only be done by forcing the holder to do so or tricking them into using a service that compromises ...


4

bitcoind does not allow you to delete addresses. (If it did, the next question people would ask is, "How do I undelete addresses?" :)) However, you can use the rpc call setaccount to change the account associated with the address. The first argument to setaccount should the the address you're changing; the second shound be the account you're moving it to. (...


4

Bitcoin Core since 0.15 supports multiwallet. That is probably much closer to what people expected the accounts feature to be (and confusion about it is one of the reasons for deprecating it). Using multiwallet, one Bitcoin Core instance can maintain multiple entirely separated wallets simultaneously. They all have their own addresses, own keys, own ...


3

I have a third option: We get rid of Anti-money laundering (AML) regulations. Money laundering has been criminalized in the United States since the Money Laundering Control Act of 1986. Perhaps it's time to reverse that decision.


3

First of all, there are many types of off-chain transactions. Any movement of value in BTC that does not directly correspond to a blockchain transaction can be classified as one. This includes: giving someone a computer/phone that has a wallet witg BTC on it giving someone a private key/physical bitcoin. giving someone access to a shared webwallet account ...


3

Note, anonymity isn't a design goal for ripple. Depending on the level of pseudo-anonymity required, gateway and future features of Ripple would likely be easier (and more cost effective) than using many Ripple addresses (aka Ripple accounts). To tell if two (or more) Ripple addresses are in the same family you need the public generator (which is named for ...


3

Bitstamp and any other exchange are companies and so can be insolvent. If you transfer $1000 to them in exchange for bitcoins. Until they send you the bitcoins they are in to debt to you for that amount. You could take them to court to recover that if they failed to provide the bitcoins or a refund. The court could issue an order allowing the companies ...


3

The human mind can remember approximately 7 digits quickly and easily. That's how you can remember US phone numbers (sans area code) without even thinking about it. However, when it gets to 10 digits it starts to reach the limit of working memory, and 20 digits is definitely out for most people. Of course, if you actually spent the time to try to memorize it,...


3

Bitcoin uses the so called UTXO (Unspent Transaction Output) model. The first time it is not very intuitive because it is different from the traditional accounting model where you just spend from and send to an account. Think about full piggy banks that can't be filled more than they are and that you have to break open before being able to spend the content: ...


2

If your (UK) business is in an area where you have specific regulations to follow for anti-money laundering, and you do, you will already know the answer. (If it is not in the UK, you may have to find out if dealing with UK-registered Bitstamp means you'll have to start complying with UK law and its requirements like KYC: Know Your Customer.) Otherwise, the ...


2

There is no general answer for all cases; it will depend entirely on the ways he chose to store and secure any Bitcoins, which vary a lot from person to person. You will need to have a trusted person look through his effects, both digital and physical. This person should be both an expert in the systems your brother used, and Bitcoin itself. If this ...


2

Problem rricci2009 commented: After few transaction by sendtoaddress command, balance in "" became negative. I solved with the "move" command from another account to "". [...] Cause sipa commented: That is expected behavior, if your incoming transactions credit accounts other than "", but outgoing transactions debit account "" (the default ...


2

Please don't use bitcoin cores accounting system anymore (especially for new projects). It has been deprecated (and might be removed in near future). A way of solving your issue would be by calling getaddressesbyaccount (get addresses of a specific account) and then use listunspent with these addresses. Then you could create your own coin selection and use ...


2

If someone has gained knowledge of your wallet's mnemonic seed phrase, and used it to create a transaction which spends all of your funds to an address that the attacker controls, then there is no way to recover the funds once that transaction confirms (short of contacting the hacker, and asking nicely to have the funds returned). Bitcoin transactions are ...


1

It's up to Kraken what they do with the money on deposit with them, though most likely they pool it in bank accounts or other secure liquid investments belonging to the company. The exact details might be proprietary. When you buy some coins, the amount you spent will be deducted from your user account, and credited to the account of whoever sold you the ...


1

An off-chain transaction means in simple terms that the parties involved in the transaction basically exchange their private keys. Say you want to pay your friend 1 BTC. You would just give the private key to your address holding the 1BTC. Go through this link for more details. Now coming to your questions. Firstly, note that accounts and the move api have ...


1

First off, you should really start thinking in terms of addresses rather than accounts, especially when doing block chain analysis. See here: What is the difference between accounts and adresses? You should also start thinking about transaction inputs not in terms of addresses, but rather unspent transaction outputs (UTXOs). Each UTXO will generally have ...


1

Only a single account ("Account 1" in myTrezor.com terminology) is supported in MultiBit HD. This is due to limitations of how the transaction data is obtained from the Bitcoin Core nodes. It is explained in the help in this article in the section headed "Bloom filtering and single HD account support": https://multibit.org/en/help/hd0.1/how-spv-works.html ...


1

Yes, the Ripple protocol does allow you to list all past transactions performed. The most typical way would be to use the account_tx command. You can "page through" the data, retrieving a particular number of transactions per command, until you get to the first transaction. I am not aware of a website where you can trace through an account's transaction ...


1

You can use lockunspent to lock (in-memory only) unspent inputs created by transactions whose at least one output was pointing to your "special address".


1

If anyone is looking for the answer, Gavin Andresen posted it on bitcointalk.org. https://bitcointalk.org/index.php?topic=567321 Transactions send via sendrawtransaction are always debited from the default "" account. Raw transactions and accounts are not designed to work together, use one or the other . And preferably not accounts: unless ...


1

A lot of this info is a bit outdated and as of now I still can't find anywhere that says Bitstamp is insured but Coinbase is FDIC insured for USD.


1

You can type 'bitcoind help' to get the available commands. You can also type 'bitcoind help command' to get more information about the command. You can find your balance in multiple ways: getbalance: returns the balance of your wallet.dat as a number, you can specify an account (if set) in quotes to get information for a specific account, the default ...


1

Several options: Don't use bitcoind Use bitcoind to interface the p2p network but ignore accounts and other abstractions Hack bitcoind to use by-account indices


1

Have you read the explanation on the Bitcoin wiki directly linked from the API calls list you already linked to? I suppose the idea could be explained as the division of your wallet into sub-wallets called accounts. You can achieve the benefits of that by explicitly keeping separate wallets (if your bitcoin client allows that). Account issues are well ...


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