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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1answer
18 views

What is BIP32-style derivation?

I am reading the technical "specification" for stealth addresses, available here. The core idea is described in the following paragraph: Using Elliptic curve Diffie-Hellman (ECDH) we can generate ...
1
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2answers
44 views

What is the best method of getting the originating address of Bitcoin transaction?

As far as I see there are currently two methods of getting the sender's address in a Bitcoin transaction: Look up the input transaction and read the corresponding output address there (like this: ...
1
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1answer
22 views

Which wallet application lets you send to multiple output addresses with just 1 fee?

Which wallet applications lets you send to multiple addresses from one output? I'm looking to build a physical bitcoin kiosk faucet and was looking to see how I would avoid miner fees if i combined ...
2
votes
2answers
18 views

Generating addresses on the fly or pre-generate and store public key?

When running a service that needed a bitcoin address, would it be better to generate a new address to use at that moment and store the private key on your server, or would it be better to pre-generate ...
7
votes
2answers
331 views

Is it possible for someone to verify that a wallet is theirs wallet, without providing their private key?

I need to know with 100% certainty that someone can tell me "this is my wallet" and prove it to me. I could of course simply get their private key/brainwallet phrase, is there any other way to do it? ...
0
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1answer
45 views

Is change of Bitcoin address of an account possible?

I have multiple Bitcoin addresses in my Bitcoin Daemon, Which address will be used for receive transaction Can i change my default account address(mentioned in 1) to new one
2
votes
1answer
49 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 ...
1
vote
1answer
45 views

multibit balances wrong, not correct for any individual address

In my multibit wallet, it reports X bitcoins. But no address in that wallet contains exactly X bitcoin, and the total reported amount should be greater than X. The reason this is stranger than ...
0
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1answer
18 views

Remove address sub from blockchain websocket API

According to the docs, Blockchain.info provides a websocket API that streams a few things: All unconfirmed transactions using "op: unconfirmed_sub" New blocks & the data they contain using "op: ...
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0answers
38 views

If I accidentally delete an address with funds

If the address is deleted (while using an online provider like CoinJar), does that mean the coins are lost for good? Or all public/private keys are still held by the company and the address deleted ...
6
votes
2answers
148 views

Why would we ever need 10k new addresses in average per day?

Generally speaking, the address space of Bitcoin seems to be sufficiently large to make it unlikely that a hash collision will ever occur (see below). Pacerier stated in a comment on Is it possible to ...
1
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1answer
42 views

Delete all wallet addresses

How can I delete all addresses from my Qt wallet without having to download the blockchain all over again from the scratch? I would like to find a bulk way to do it as there are a few thousand ...
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2answers
63 views

Bitcoin URGENTLY Need Blocks Files - Download them from some Website [duplicate]

I have been doing this synchronization procedure (first time) in bitcoin-qt for over 85 hours and it only came to 31 Weeks Behind. Withdrawed from localbitcoins like 95 hours ago and obviously this ...
0
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0answers
19 views

Most transacted account & how many?

I cannot seem to find this data on any of the major data provider sites. What Bitcoin address has performed the most blockchain transactions to date? How many?
0
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2answers
35 views

How Do Addresses Function? [duplicate]

I understand that an address is needed to send Bitcoins to other people, but I do not understand why you are recommended to generate a new address for each transaction. Also, I have read that an ...
0
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0answers
28 views

Address generation of all cryptocoins

Bitcoin-ruby generates bitcoin addresses for bitcoin link. We are developing a UI which supports some more coins. How can we support generation of address for othercoins too(Ex. Dogecoin, Litecoin, ...
2
votes
1answer
44 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 ...
0
votes
0answers
47 views

Coin address generation with Vanitygen

I want to use Vanitygen to generate addresses for all coins in coinmarketcap. I can't understand the syntax Bitcoin (BTC): $ ./vanitygen -X 5 3 -k $ ./vanitygen -X 5 31 -k $ ./vanitygen -X 5 39 -k ...
0
votes
0answers
17 views

Adding watch-only addresses to Blockchain.info through an API?

I want to set up a service to monitor the activity of various watch-only addresses. I know Blockchain.info offers an option to do URL callback notifications when a payment is made to an address in ...
4
votes
1answer
158 views

Coin address generation for all coins

We are developing UI for coin trading. We have a plan to use all the coins present in coinmarketcap. I am greatly confused how to generate coin address for all coins. I knew that from cryptsy.com, it ...
0
votes
1answer
37 views

Which crypto currencies have shortest payment address?

Different crypto-currencies have different lengths of payment addresses. For example, LTC address length is 34 case sensitive letters and numbers. NXT address length is 20 digits. Short payment ...
2
votes
0answers
27 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 ...
3
votes
2answers
388 views

What if a transaction is made to a wallet that doesn't exist?

Wallets can be created offline, and transactions can be made to that completely offline wallet through by obtaining that wallet address. Now, when the guy owning the offline wallet goes online, his ...
1
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1answer
43 views

Why can addresses be shorter than 34 bytes?

The wiki entry on Address says: Some Bitcoin addresses can be shorter than 34 characters (as few as 27 in theory) and still be valid. [...] These shorter addresses are valid simply because they ...
0
votes
2answers
120 views

How does ScriptPubKey know the public key of an Bitcoin address?

I am currently having a blonde moment. The ScriptPubKey provides a hashed version of the receivers public key. scriptPubKey OP_DUP OP_HASH160 OP_EQUALVERIFY OP_CHECKSIG However, if I give ...
2
votes
3answers
105 views

Within the Bitcoin ecosystem where are wallet addresses stored/reserved?

I understand that Bitcoin is a distributed system based on the blockchain, and I understand that transfers/transactions are stored in the blockchain, which exists on many servers around the internet. ...
0
votes
1answer
98 views

What are the weakest cryptographic guarantees in Bitcoin?

I read in this Github pull that Bitcoin relies on weaker cryptographic guarantees than SHA256. What are the weaker cryptographic guarantees being referred to? Could it be that RipeMD is 160 bits? ...
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votes
1answer
65 views

how to earn a transaction fee for transactions originating from my client

I am working on an online litecoin wallet system. For every transaction originated from our site, we need to charge say x% of the amount as fees and it'll be sent to Admin's address ? How can I do ...
1
vote
1answer
107 views

Is it possible to trace BTC or cryptocurrencies?

There are input and output addresses in each transaction of cryptocurrency. So everyone can trace the flow back. If someone send me some BTC or other cryptocurrency to my address, and I regenerate a ...
0
votes
1answer
35 views

What is the reference algorithm for validating a Bitcoin address?

I need to validate Bitcoin addresses in an application I'm developing; I have found various code samples for various languages (even on StackOverflow), but none specific for the one I am using (C#); ...
0
votes
1answer
69 views

How to make a transaction start from a given address?

Usually, a Bitcoin wallet includes multiple addresses, and each address has a balance of 0 or more Bitcoins. When a payment is sent out, outgoing Bitcoins are taken from one or more addresses, ...
2
votes
2answers
88 views

How many characters you need to mistype at minimum to get another valid address?

Is it known the minimum amount of characters you need to mistype to get another valid address? Addresses contain checksums, and also must follow some specific rules, so I guess this could be ...
2
votes
3answers
160 views

If Bitcoin addresses are truely random, then why are some more difficult to generate than others?

In this post TierNolan explains why 'Bitpoin' is much easier to generate than 'bitpoin', and that mainly has to do with the position (first character). But I remember that certain characters (I ...
1
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2answers
91 views

“always spend all balance of paper wallets” - Then why am I using my paper-wallet for multiple transactions without any problem?

I'am very confused. I just read on the most popular services for paper wallets that "You should always spend all the funds on a paper wallet, not part of it or you will lose the rest" . It links back ...
0
votes
1answer
66 views

how to transfer coin using bitcoin rest API

I've been googling for quite some time now, but I was unable to locate any complete example, with the request & the POST/GET parameters to the Bitcoin JSON-RPC. How to use the JSON-RPC ? How to ...
2
votes
1answer
133 views

Does it hurt the network to reuse addresses?

There is already a question that ask why you shouldn't reuse addresses, but it's about whether or not it's a bad idea for the person who would do the reusing. I understand there are several reasons ...
0
votes
1answer
59 views

Can people associate one blockchain address with another?

I am using blockchain wallet to store some BTCs. Blockchain allows us to create multiple addresses as such: If I give two different addresses in the same account to someone, will he be able to ...
1
vote
1answer
40 views

MultiBit sends BTC to different adress then I wanted

Bug report Operating System: Windows 7 MultiBit Version: 0.5.15 Steps to replicate the problem: send BTC to specific adress Hello I have a problem with sending BTC, what happened to me was, that ...
0
votes
4answers
39 views

Is using a new address for each transaction pointless when applied to a donation button on a private website?

I'm just looking at how to implement donations on my site and also read that I should use a new address for each transaction to increase anonymity. Is this an ultimately pointless practice when tied ...
1
vote
1answer
80 views

Bitcoin - differences between address, account and wallet

I've been reading official BTC documentation and now I'm completely lost. Documentations is too tangled and written in unnecessary many words. They have: https://en.bitcoin.it/wiki/Address ...
1
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1answer
65 views

What encoding is “pubkey” from the JSONRPC validateaddress command?

I need to convert a public key into a form suitable for use with BouncyCastle. To do this I open the debugger and write: ListAddressGroupings I then pick an address and write validateaddress ...
2
votes
1answer
88 views

Need sample compressed and uncompressed Public / Private key pairs for BigInteger

I am testing a different version of BigInteger that has different endian formats and the native implementation likes to add or remove zeros from the final output. Can anyone provide some sample ...
0
votes
1answer
30 views

How to apply my bitcoin address generated offline to online

I think I can generate bitcoin addresses offline by JS. Can I use them directly or have to report them to somewhere so that the network knows my addresses?
1
vote
2answers
69 views

How do I get a Wallet address?

New to this (obvious) Using armory. To send/receive BC's I need and address for the wallet. How do I get this address? Simple question and have searched but no direct answer?? Thanks
2
votes
0answers
75 views

Retrieving all the funds from BIP32 derived wallets

An ecommerce site is using BIP32 wallets for receiving order payments from a tree of child keys where each leaf node is unique to one purchase transaction. Is it common for the site to immediately ...
0
votes
2answers
124 views

Are pseudo-random number generation algorithms good enough to cover all possible Bitcoin addresses?

Part of why Bitcoin works is that it's completely unlikely for someone to end up with the same Bitcoin address. But since Bitcoin address generation is based on pseudo-random generation it raises the ...
1
vote
3answers
316 views

Bitcoin QR codes: raw address or Bitcoin URI scheme

I am the author of bitcoinaddress.js library and I am wondering what's the best content for Bitcoin QR codes. What Bitcoin QR codes should contain (for mobile wallet apps and other barcode scanners): ...
2
votes
2answers
228 views

What is the chance of someone (randomly) finding the private key for an existing Bitcoin address?

Say I have created a paper wallet with one bitcoin address in a vault. What are chances that someone else will find the private key for this wallet? Related: what are the chances of vanitygen address ...
0
votes
1answer
65 views

How to monitor large number of public addresses [duplicate]

I have created 10K addresses with vanitygen to deal out for transactions, Now how do I watch all those addresses for transactions and balance?
1
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3answers
123 views

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 ...