The hash of an ECDSA key-pair's public component. Knowledge of this value allows a user to send Bitcoins to another person over the network.

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2
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1answer
14 views

Where can I see the code of how the UTXO set is updated in case of a fork in Bitcoin Core?

I am looking for a filename and a line, or multiple ones if necessary. My goal is to maintain an index of addresses to UTXOs.
0
votes
0answers
26 views

How do I create an address in MultiBit?

I would like to establish an address that can receive bitcoins from viewing websites. How do I create a new address in MultiBit?
1
vote
0answers
19 views

Can one receiving address from my Wallet be linked to another from the same Wallet?

I have created a wallet using Electrum. Electrum creates 20 receiving addresses. My question is can these be linked or traced back to each other? I want to understand if I have create another wallet ...
0
votes
1answer
54 views

Anonymous Buying/Selling

If one person sold bitcoins to another person using a smartphone, will a record of the IP addresses of the devices they used be seen in the blockchain?
1
vote
0answers
22 views

Table of coin parameters

What are the P2P network magic bytes P2PKH version byte P2SH version byte Private key version byte P2P Port RPC Port Atomic units per coin (100,000,000 for bitcoin) for Bitcoin, Bitcoin testnet, ...
2
votes
2answers
86 views

Encoding my Bitcoin Address with Base58 encoding

I am trying to convert my Bitcoin Address with BitcoinJ in order to look like a normal address such as this: 1J7mdg5rbQyUHENYdx39WVWK7fsLpEoXZy. I haven't found anything exept for the Base58.encode() ...
0
votes
2answers
61 views

How can the transaction history be checked when new addresses are generated?

When a new transaction is executed via a Bitcoin-client, the sender will have a different address than the ones used in previous transactions. I also know that all the full nodes in the Bitcoin ...
3
votes
1answer
33 views

Derive new public keys from a public key?

This article says you can generate new public keys from an already generated public key. How is this possible? https://bitcoinmagazine.com/articles/deterministic-wallets-advantages-flaw-1385450276 ...
3
votes
4answers
128 views

If I were to generate an address and it happens to collide, legally speaking, would a transfer constitute theft?

Let's say that somehow I generate a new address which happens to already be "taken". I realize the chances of address collision are extraordinarily low as per Is it possible to brute force bitcoin ...
1
vote
1answer
41 views

How can I manually add a receiving address in MultiBit Classic Wallet - disconnected during confirmation

Open to any suggestions... (Original Question is below and am trying advice from the first answer) I am in the process of looking at all the deleted files on the USB disk where MultiBit resides using ...
2
votes
1answer
41 views

Can I have multiple working public keys per wallet?

My Android Bitcoin wallet changes the Public key (the one I give to others) after every transaction for security. However, I want to put up a Public key online for donations. Does this mean that my ...
2
votes
2answers
211 views

How to identify the owner of a Bitcoin address?

My father's computer was infected with a CryptoWall virus. The virus attacker asks for Bitcoins to send me an app to decrypt my our files. Is there any way to identify the Bitcoin address owner? How ...
0
votes
1answer
78 views

Can I add Bitcoins by address?

I signed up for bitcoin ages ago, but never used it; I forget who I signed up with I have had to reinstall the OS (Win 10) on my computer and lost the program I used. I do still have a copy of the ...
4
votes
1answer
74 views

How to make a vanity throwaway address? Similar to 1BitcoinEaterAddressDontSendf59kuE

I want to write data to the Blockchain, and write to specific addresses. I want to send small amounts of Bitcoin to addresses like this: 1MikesReallyCoolApp<game_id_here>59kuE How can I do ...
1
vote
0answers
170 views

In Multibit HD, is there a way to see all of my receiving addresses?

I understand that if I request a payment and delete the request, I still own the address and will receive Bitcoins that were sent to it. However, I find it very uncomfortable to just "assume" that I ...
4
votes
2answers
129 views

If I lose a Trezor then how does the replacement get access to the same wallet?

I am pretty confused. What I understand is that when I buy a Trezor then it gives me some words that I need to copy down. When the Trezor starts up does it then automatically create some Bitcoin ...
3
votes
1answer
71 views

Where is the public key corresponding to my address stored?

Some simplified explanations of Bitcoin say, that the Bitcoin address is the public key, and anybody can easily verify that a signed transaction is valid since it was signed with corresponding private ...
1
vote
0answers
29 views

Is it possible to search for an transaction to or from an address with a time period filter?

How can I search for a transaction to or from a certain address in the block chain within a particular time period? I am trying to answer if this transaction occurred on 17 Oct 2014. Hence, instead ...
1
vote
1answer
64 views

How can I get the input addresses of a transaction in Java?

I am trying to obtain the addresses of entry of a transaction when I receive money, but I have not found the way. I have tried to create an address with the bytes obtained by calling ...
1
vote
1answer
95 views

OP_EQUALVERIFY Problem

I'm making a full-service wallet, I already made the UTXOs selection algorithm and now I want to push the transaction hex bytes. It works when I push only a transaction with only 1 input, but if I try ...
4
votes
2answers
189 views

How to create a sending address with Bitcoin Core?

I downloaded Bitcoin Core and I'm just having a look around and I can't for the life of me figure out how to create a sending address. I'm using a site to buy stuff and to register I need to "Setup ...
2
votes
1answer
76 views

What happens if I receive a payment after deleting the payment request

I just started with Bitcoin using Multibit HD. I clicked request payment and sent the address to someone. I then deleted the request. What happens if bitcoin is sent to this address? Will it just ...
2
votes
1answer
66 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?
2
votes
1answer
50 views

Secret Key value for decimal versions over 127

After reviewing the address prefixes page on the wiki, I have noticed that in Bitcoin and other altcoins that the secret key / dumped private key header is always the decimal version + 128. So with a ...
1
vote
3answers
164 views

Bread wallet iOS app

I am new to bit coin and the bread wallet app, so please excuse me if this is a really obvious question. I have read a lot of information saying that it is vital to use a new address every time I ...
3
votes
1answer
63 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 ...
2
votes
1answer
47 views

What is the use of hashing the public key to obtain the bitcoin address?

What is the use of hashing the public key to obtain the bitcoin address (except to compress it) rather than using the public key directly? Why not deal with public keys directly?
3
votes
1answer
48 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 ...
-1
votes
1answer
79 views

Can you use any Bitcoin address as a Counterparty token receiving address?

I have a bunch of bitcoin addresses and I would like to just use them for receiving counterparty tokens. I've read that counterparty addresses are the same thing as a Bitcoin address. Is this correct? ...
1
vote
1answer
50 views

x , y coordination division

python code def inverse(x, p): return pow(x,p-2,p) p = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f #private key 2 -->(x , y) value xx = ...
1
vote
1answer
74 views

How to get balance from a specific address in bitcoinj?

I'm trying to get the balance of a specific address in a wallet by using bitcoinj, but I don't know how. Can someone help me? Thanks in advance!!
2
votes
1answer
110 views

Bitcoin how to get X value from Y

How to get X value from Y? ECDSA x,y coordinate validity verification doesn't seem to work X = 0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 Python code, p = ...
2
votes
0answers
86 views

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 ...
1
vote
1answer
42 views

how is the private/public keypair for spent bitcoins connected to the private/public keypair which corresponds to my address?

Spending bitcoins costs me to sacrifice (i.e. can only be used once) a private/public keypair, am I right? Receiving does not use up a private/public keypair, am I right? Creating a new address also ...
2
votes
1answer
47 views

Duplicate r value for an address: only an issue for a multi-input Tx?

I've modified the r-scan Python code to look beyond the 50 Txs the Blockchain.info API usually returns. My modifications take all the r values for my address and look for duplicates, but a commented ...
2
votes
0answers
77 views

Is it possible to discover the set of bitcoin addresses from a public key?

I'm trying to find the set of bitcoin addresses from a public key associated with a user just to analyse this user transaction. Is there any way to derive/find all the addresses that have been ...
1
vote
1answer
92 views

Bitcoins lost due to outdated address

I sent a bitcoin to temporary address. So seller did not get it because address was outdated before I sent bitcoins via bitcoins-qt. Is there chance to return my bitcoins?
1
vote
1answer
48 views

Relation between multi-sig and single-sig addresses (in BCCAPI library)?

I had a multi-sig address M (starting with 3) that I was trying to send a small amount of coins to. I was playing around with BCCAPI and the coins got sent to an "ordinary" address A (starting with 1) ...
1
vote
0answers
37 views

account id & bitcoin amount & message ?-> show website content

I am planning to make an website / wordpress plugin. Site will ask visitor's account id. Site will show content only if a bitcoin transaction with specified account id & bitcoin amount & ...
2
votes
1answer
125 views

Android Bitcoin Wallet freshly installed, two addresses. Why two?

First off, I am rather new to Bitcoins — will be obvious after I asked my question I guess. I have read some theory about it, like it's a distributed crypto-currency based on the Bit Torrent protocol, ...
0
votes
0answers
6 views

Transfer to Bitcoin core address without sychronizing first [duplicate]

I installed Bitcoin core but its not fully synchronized right now. I think i make a mistake. I transfer my bitcoin to address that show in my bitcoin core I install in my desktop without sync data ...
1
vote
2answers
37 views

Why is pycoin getting the incorrect output address?

I am using pycoin version 0.52 from pypi and it is getting the wrong output address from a transaction. Code # testnet txid and corresponding rawtx # see ...
5
votes
3answers
386 views

How can I test if a bitcoin address is compressed or not?

I have two bitcoin addresses: 1D8VSXHFAWNhAbruwUMbNp4hsXAnRNkYvX 12T15tvMGaymMX97X9KxVzyLF323r8v6Hg One is compressed, one is not. How can I test which is which? (Preferably using python 2.7) ...
1
vote
0answers
18 views

Single address wallets - no change addresses [duplicate]

Is it legal for Bitcoin transaction to spend output back to one of the input addresses? Namely, to create a single address wallet (paper wallet), so that change addresses do not need to be generated. ...
1
vote
0answers
48 views

Online wallet for betting / customer profile?

I am looking for a system that provides users with the option to deposit and withdraw BTC to a generated address. Basically something that works like https://primedice.com/play and ...
5
votes
2answers
501 views

What are the minimum and maximum lengths of a Mainnet Bitcoin address?

I'm getting mixed answers on this question. For example, this source says addresses vary between 27 and 34 characters in length. The Wiki says 26-35 characters. Neither source cites something that ...
3
votes
4answers
279 views

Coins sent to unknown address in Multibit

Premise: I'm quite new to all this bitcoin thing. After experiencing some problem with a bitcoin transaction, I made few attempts with small quantities (0,0001). In particular, I've sent 0,0001 to ...
1
vote
1answer
54 views

Reuse of addresses by a service (“get new address” returning *funded* addresses)

Recently, a marketplace was said to have been reusing deposit addresses, such that clicking the "get new address" button would immediately give the user a different address, however, the "new address" ...
0
votes
1answer
41 views

Is there A Mechanism In Place that Prevent Address 'Squatting'? [duplicate]

Is there a function or mechanism in the bitcoin protocol that prevents someone from creating millions or billions of bitcoin addresses and just sitting on them? Do the addresses need a minimum balance ...
2
votes
1answer
62 views

Check if a user pays another user for bitcoin website

I am creating a bitcoin website. I would rather the bitcoin didn't go through my website to prevent any security issues. What happens is one user pays another user, and when that happens my website ...