Questions tagged [address]

This tag should be used for Bitcoin addresses. A Bitcoin address is an encoding of the hash of an ECDSA public key or a script. Knowledge of this value allows a user to send Bitcoins to another person over the network. Bitcoin addresses begin with a '1', '3', or 'bc1'. Not to be confused with mailing addresses or IP addresses.

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3answers
879 views

Determining if input is a block ID, transaction ID, or address

how do sites like https://blockexplorer.com determine if the input (see inputbox in the header of https://blockexplorer.com ) is an address, transaction ID or block ID? I want to write something ...
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1answer
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Sending bitcoins to same address

I am using the BitcoinJ API to create my wallet. When I create a transaction, I provide the change address to which change should be sent. For example: let there be 1 bitcoin at address A; then I ...
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4answers
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Is it possible to generate a complete public address with vanitygen?

FAQ says it's possible to use vanitygen to search for a match to a complete address yet when I input a complete address I get an "is too long" error message. Is there a way to run vanitygen using a ...
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1answer
101 views

At what rate are new addresses appearing in the blockchain?

How many new addresses are the recipient of transactions hourly? daily? weekly? monthly? I understand that this is always changing, so bonus points if you can provide code to calculate it!
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1answer
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Is it a bad idea to use a bitcoin wallet address in a domain name or URL?

Aside from it forever being public and kind of marrying a business to a wallet.
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861 views

Does the public key associated with an address become part of the public record after it has been used to spend?

Since bitcoin addresses are hashes of public keys and not public keys as such, if one wanted to craft a message that could be decrypted by the generator of an address, that can't be done just with an ...
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1answer
1k views

Linking a transaction to a Bitcoin user

Has anyone tried and perhaps succeeded at linking a transaction to a possibly controversial site (such as Wikileaks) to a Bitcoin forum user by their forum signatures? I know a lot of people disclose ...
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Identifying the type of wallet that's being used?

Is there any way to identify what type of a wallet a Bitcoin address is associated with? For example, if you created an address via Blockchain.info, would anyone know it was created through them or ...
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1answer
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What's going on with address 1NZ9kxxUykiNSe61ZRNPLqWeVHVRnirGry?

Does anyone know what is going on here: https://blockchain.info/address/1NZ9kxxUykiNSe61ZRNPLqWeVHVRnirGry As far as I can tell, it looks like the "1NZ9..." address seems to be one one of those ...
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1answer
634 views

Why doesn't directory.io list addresses starting with 3?

Why doesn't directory.io list addresses starting with 3? I have no idea why it is so.
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1answer
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How to generate a zcash vanity address?

Is the main network address version for zcash already known? Is it possible to generate a mainnet address already? This could allow miners to start from minute 0 to mine on a anonymous pool. The ...
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1answer
708 views

Do electrum fully support Hierarchical Deterministic Wallets?

I'm curious if electrum fully support Hierarchical Deterministic Wallets (BIP32). I have seen in source code that some part of implementation is done. But there are also as I think some electrum ...
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How do I own my bitcoin address?

I am a bit new to BTC. I bought few via Virwox and it tells me I have an address. People can send money in BTC to that address. I also downloaded MultiBit on my Mac and I got another address. But ...
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Random Bitcoin address generation

From https://en.bitcoin.it/wiki/Address: A Bitcoin address, or simply address, is an identifier of 27-34 alphanumeric characters, beginning with the number 1 or 3, that represents a possible ...
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1answer
526 views

How is a Ripple address constructed?

How is a Ripple address constructed? Is it similar to how a Bitcoin address works albeit with a different net byte, or are there some more differences?
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1answer
501 views

How do I disable automatic address generation for the official bitcoin client?

This question was asked before over at bitcointalk.org over here way back in June '11. The answer back then was a resounding no. Is this still the case? My wallet.dat keeps growing bigger after every ...
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Querying UTXOs with random key pairs

As the number of transactions in the bitcoin network grows, the number of addresses with bitcoin will also grow. Is it possible for someone to “scavenge” for bitcoin by generating random key pairs and ...
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What can be changed in signed bitcoin transaction?

What can be changed in signed bitcoin transaction? I mean how is possible to modify transaction to change its hash, but keep transaction valid, without need to have sign private keys?
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How to get the bitcoin balance of a public key in C#?

How can I get the bitcoin balance of a public key in C#? E.g. for this public key: 1FqLoEpbQpMxow5bqEPpFbPVnBEbFcsg3J How can I get its balance in C#?
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1answer
199 views

Is there any way to “revoke” a bitcoin address?

Given e.g. one lost the private key to a specific bitcoin address, is there any way to make sure no more bitcoins can be transferred to it since it effectively became a bitcoin-furnace?
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1answer
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How is an address beginning with a 3 valid?

The Bitcoin Dark Wallet project is accepting donations to address 32wRDBezxnazSBxMrMqLWqD1ajwEqnDnMc. How is this a valid address? I thought that all Bitcoin public addresses start with 1.
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1answer
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Do all private keys that are resolved to the same address give access to the bitcoins on this address?

The algorithm to get the public key and the address from a private key consists of a few steps. Which of the intermediate keys is used to sign transactions with? Ultimately, there can exist two ...
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1answer
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How can I identify the coin type from its address?

I know Bitcoin addresses start with 1, and it seems that testnet addresses start with m or n, and Namecoin addresses start with N, but is there a more complete list that would allow me to identify the ...
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1answer
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What is the btc.to address shortening algorithm?

How does the btc.to address shortening algorithm work? Is is a deterministic algorithm, that is, it can be reproduced on other websites with the same results, or are the results specific to the ...
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1answer
404 views

FirstBits address shortening algorithm

Is the algorithm used by FirstBits to create their shortened addresses described anywhere, so that anyone wanting to automatically generate them could generate the same result as asking the website ...
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Is there any way to tell if an address has been created on an exchange? (e.g., Coinbase)

I am wondering if there is any way to check that a bitcoin address was created on an exchange. For example, if I want to only interact with (send BTC to) people that have verified their identity (...
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Is this how to generate a bitcoin address with python?

So I have already the public key. My question is if I'm applying correctly the b58 encoding, since bitcoin uses b58check, and also adds x00 prefix. Can somebody explain me that? Thanks. import ...
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How to generate bitcoin address?

I'm currently studying Bitcoin and I followed Bitcoin wiki's instructions to make an address. But my program never responds as the site above does. Supposedly, the ECDSA key ...
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1answer
328 views

Consolidate to one wallet service

I've used a few different apps to create wallets and have decided to narrow down to a single web-based wallet software. Is there some way that I can take the addresses from my other apps and import ...
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1answer
133 views

Advanced Bitcoin Transactions

Let's say that 7 users want to spend money from a Bitcoin multisig address. The approval of funds from this address requires the signatures of A (the leader), either B or C (two managers), and 2 of 4 ...
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1answer
62 views

On multibit how do I update my sending address? [closed]

I have bitcoin in my transactions but it does not appear in my wallet. It says updates stopped
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1answer
193 views

Is there any way to send an output to a script which can then only be sent to one of two addresses?

Is the following scenario possible? I want to send money to a script. This script will require knowing a private key to spend, as usual, but the script is only valid if the money is being sent to one ...
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1answer
211 views

How does one claim ownership of an NXT address?

Apparently, NTX uses very short addresses and a very small alphabet. There is a system designed to claim ownership of a given address, but I couldn't find much information on it. How is it handled in ...
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How to deterministically generate large number of bitcoin addresses and monitor them

I want to generate a large number of bitcoin addresses to provide visitors for each transaction and I want to monitor payments to those addresses. How do I deterministically generate those large ...
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Support sending bitcoins using webpage URL? [duplicate]

Are there any Bitcoin clients or services that support sending bitcoins to a HTTP(S) URL instead of having to enter a Bitcoin address directly? (e.g. for donations) Webmasters could include their ...
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Bitcoin Client - How do I find the destination address of an incoming transaction?

I'm mining Bitcoins and have multiple incoming addresses in my bitcoin-qt wallet. When I get a payout for mining in the "Transactions" tab it shows the amount of BTC I received and the type is set ...
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1answer
493 views

Is it possible to create an address from a predefined private key?

I was not sure how to formulate the question title. What I want to achieve is the same as VanityGen and many other tools do to create an address starting with a predefined part, but with private keys. ...
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1answer
3k views

Dumpprivkey or dumpwallet won't show my private key for the address in my wallet

Haven't opened my wallet in a while so it's not in sync with the network. 5400 blocks remaining as I write. The wallet is not encrypted. Received some bitcoins to my address in this wallet. Now I ...
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1answer
133 views

Where are new addresses stored?

When a user generates an address using Bitcoin Core, is that address by default stored on the blockchain or will it only be stored after it is used in a transactions
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1answer
909 views

How do I check if an address belongs to my wallet using bitcoinJ?

I'm using bitcoinJ and I want to verify if some of the destination addresses in a transaction belongs to my wallet when I receive a amount of bitcoin. How can I verify it?
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1answer
612 views

Best method for getting bulk address information (total sent, received, and final balance)

I need to go through a large list (about 100 000) of bitcoin addresses, and, if they have a final balance, find that as well as the total sent and recieved. I am working in python, and I have looked ...
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1answer
5k views

Generating an address from a private key in Java?

I'd like to write a function in Java that takes a private key and generates the address to use in a QR code. I'd like to make this , but I'm not very good with the hashing algorithms. I've checked ...
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1answer
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Step by Step - how does sending 1 bitcoin work?

I've been reading about how BitCoin works for a few weeks now - and I'm trying to understand under-the-hood how the cryptography works. So i'll explain what I know at the moment - and if someone ...
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2answers
609 views

Is there a self contained C/C++ code snippet out there to validate a Bitcoin public address?

I tried looking through the Satoshi Client to grab the necessary code. It ended up being too difficult for me as my expertise is not in C or C variants. And the fact that the code use boost made it ...
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1answer
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Electrum Error Message “22”

When I try to send BTC from my Electrum wallet address to one of my unused addresses in Electrum, just as a test, it comes up with an error message (U'message':u'TX rejected, U'code':-22). I'm using ...
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1answer
230 views

Bitcoin Core 0.13 How many addresses it can **effectively** manage?

I want to know, what's the maximum amount of addresses that Bitcoin Core 0.13 can manage? All addresses should belong to the default account. I want to use walletnotify feature How startup time ...
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Whisper Implementation in Bitcoin

Is there some kind of implementation in bitcoin to communicate between nodes, which is similar to the Whisper Communication in Ethereum ? Whisper, is a communication protocol for DApps to communicate ...
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bitcoin:uri for sending payments to multiple addresses

Lets say I want a donate bitcoin button/QR code to send to multiple recipients in different ratios. As in send 50% to wallet 1. Send 25% to wallet 2. Send 25% to wallet 3. Is there any way to do ...
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ECDSA x,y coordinate validity verification doesn't seem to work

The ECDSA algorithm, secp256k1 for Bitcoin allegedly uses the equation y ^ 2 = x ^ 3 + 7 mod P to determine the validity of an alleged point upon the elliptical curve. Utilizing http://web2.0calc....
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If someone knows my bitcoin address, does this mean they can spend it or move it?

What if I wrote down or saved a file with the address on and someone found it, can they take my coins? How secure is it?