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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3
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1answer
558 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 ...
19
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7answers
11k views

What is the longest known vanity address generated?

Anyone can generate a vanity address of arbitrary length with appropriate tools, it's just a matter of performing enough computations. What is the longest known vanity address anyone has generated?
5
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2answers
447 views

Sending and Receiving Mechanics

I'm new to Bitcoin and am considering allowing people to pay for my software with them. Before I continue I would like to clarify some things. My googling did not get me the answers I was after. I ...
5
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2answers
106k views

Where can I see my Bitcoin address?

I use the original client, but I don't know where can I find my Bitcoin address. Can someone help me?
2
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4answers
615 views

Who has this many BTC?

http://blockchain.info/address/1VayNert3x1KzbpzMGt2qdqrAThiRovi8 I don't understand who could possibly have this many BTC.
33
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1answer
8k views

Why are Bitcoin addresses hashes of public keys?

Currently, Bitcoin addresses and their checksums are constructed from the public key by a using repeated hashing with SHA256 and RIPEMD160. Now I understand the reasoning behind using hashing for ...
3
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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 ...
16
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2answers
2k views

Is a wallet just a collection of private and public keys?

There is a fundamental bitcoin concept I don't get. Am I correct in that all I "need" to send and receive money are a single address and its associated private key? In other words, can't I just ...
5
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4answers
368 views

How does Alice know she is receiving the correct address?

Let's say Alice wants to send Bob some coins. Bob needs to tell Alice where to send them, so he sends his address to Alice. How does Bob send this address so that Alice knows that the address she is ...
69
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4answers
33k views

What is a compressed Bitcoin key?

The standard Bitcoin client in version 0.6 apparently introduces compressed keys. What are they? Are there any drawbacks to using them? Any incompatibilities with older software? Reductions in ...
3
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1answer
6k views

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 ...
12
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5answers
992 views

How to instantly give people a pre-filled wallet to introduce them to Bitcoin?

As a Bitcoin evangelist I like to introduce Bitcoin to my friends, and if possible even get them involved by having them own a few coins themselves. The settlement of a personal debt through Bitcoin ...
27
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2answers
8k views

How many Bitcoin addresses are/have been carrying a balance?

Bitcoin addresses can be generated at will, and the theoretical limit to their number is high. Addresses are constantly being generated to receive funds or balance transactions, but they are also ...
3
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3answers
2k views

How do I know my wallet.dat actually already contains 100+ addresses ready to be used?

I'm using the standard commandline client (under OSX, in case this matters). I've read in some threads that it is smart enough to pregenerate 100+ addresses to be used in future when you ask them, so ...
15
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5answers
14k views

How to validate a Bitcoin address is a real one?

Is there a code snippet that validates a bitcoin address? I'm looking for both javascript and java snippets. The code should support both testnet and real addresses.
3
votes
1answer
323 views

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 ...
2
votes
1answer
173 views

What is the "wallet export format"?

The "wallet export format" is mentioned at the Wiki page for Mini private key format, but it doesn't seem to be explained on the Wiki. How does one convert the export format to and from corresponding ...
10
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1answer
8k views

PHP script to create private key & public address

Does anyone have an PHP code that can do what is done on this website: https://www.bitaddress.org Namely create private keys and associated public addresses?
6
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2answers
535 views

Two bitcoin addresses - Can you link them together?

I'm new to bitcoins and I was wondering; if I generate an address, add money to it (from MtGox for example), remove the address and use another address in the future. Would it be possible to link ...
7
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1answer
4k views

Bitcoin script example

Is there some good example on how to process a basic tx's scriptsig and get the recipient's address from the raw transaction?
3
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1answer
426 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 ...
7
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1answer
4k views

How fast can one generate Bitcoin addresses?

Seeing as the topic of generating address conflicts comes up every now and then, I am wondering if someone looked into the problem a bit further. Has anyone measured the speed at which Bitcoin ...
7
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2answers
493 views

How should one try verifying to whom a given Bitcoin address belongs?

Lets say, I'd have a website that shows a large number of Bitcoin public addresses, and wanted to give option for anyone that owns a given address to verify it automatically. Assuming that one ...
12
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3answers
8k views

How can I generate a large number of Bitcoin addresses?

I would like to generate a large number of public Bitcoin addresses (several hundred thousand) quickly and efficiently into a simple text file. What would be the easiest way to get this done? I'm just ...
14
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5answers
675 views

Why does the standard Bitcoin client not display the balance per address?

Any Bitcoin wallet holds several bitcoin addresses. Such addresses are either generated manually from the GUI addressbook or automatically collecting the "change" of a "Send" transaction. The total ...
39
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2answers
9k views

What are Green Addresses?

What are Green Addresses? Is it true that they can solve the "confirmation delay" problem, and how does that work? Are there any drawbacks?
9
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1answer
631 views

Different ways to encode Bitcoin Address

What are the different ways to encode a Bitcoin Address (both private and public) and how are they calculated? I've heard of things like firstbits, mini private key format, and I`d like to know how ...
45
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3answers
15k views

Why does Bitcoin send the "change" to a different address?

For example I have an address (A) with 20 BTC and send 9 BTC to address (B). Bitcoin will create a "change" portion of the transaction where the remaining 11 BTC goes to address (C). Why not send ...
29
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5answers
18k views

How are public & private keys in an address created?

I understand the high level concept I am more interested specific details. How is a private key generated. How exactly is public key generated, how is address generated from public key.
11
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2answers
627 views

Is there a recommended maximum number of transactions any one address should ever receive?

The pool I am with has sent about twenty transactions to one address I gave as a 'send to' addy. Could this one address just go on and on taking more and more of these transactions? A hundred of them? ...
13
votes
1answer
5k views

How can I use the vanity name generator to look for an address?

How do you use the vanity name generator to look for an address? Is there an estimate on how long it takes to find addresses of varying lengths and complexities?
13
votes
1answer
940 views

What is the meaning of the Bitcoin address version?

Bitcoin address versions are described on the Address wiki page: Normal addresses currently always start with 1, though this might change in a future version. Testnet addresses usually start with m ...
10
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3answers
737 views

How can I find out the address my payment will come from?

Can I find out the address I am going send from before making a payment? And could this be useful for merchants that want to identify my transaction?
20
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5answers
1k views

Is there an easy way to give people a Bitcoin address?

I see that Bitcoin addresses have built in checksums that helps prevent typos (ie. it is highly unlikely that you can mistype a Bitcoin address and have it still be valid). However, I still think the ...
40
votes
7answers
37k views

What happens if I mistype the address when making a payment?

I sent bitcoins to an address, but I think I made a typo when I copied it. Where did these bitcoins go. Can I get them back?
37
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10answers
28k views

How is it possible to launder bitcoins?

Some services, such as bitcoinlaundry.com, claim that they can launder your bitcoins. Since all bitcoin transactions are publicly logged, how is this done? Wouldn't it be possible to trace back the ...
131
votes
11answers
76k views

Is it possible to brute force bitcoin address creation in order to steal money?

Bitcoin users frequently generate new addresses for each transaction they make, which greatly increases the number of bitcoin addresses being used to receive money. Would it be possible (and ...

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