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Questions tagged [blockchain]

This tag should be used for questions pertaining to the blockchain. The blockchain is a list of all transactions that have occurred using the Bitcoin currency. It consists of blocks which are linked to each other, and each block consists of transactions. DON'T USE THIS FOR THE SERVICE NAMED 'blockchain.info'!

3
votes
0answers
320 views

Are there really messages in the blockchain? [duplicate]

Possible Duplicate: How can one embed custom data in block headers? Someone told me a hacker put messages in the blockchain. What does this mean? Edit: related asked/answered question How can ...
35
votes
9answers
19k 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 ...
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votes
4answers
3k views

Is there a way to use the block chain as entropy in random number generator? [closed]

I want to create a transparent gambling/lotto site and use the block chain as entropy for lotto numbers, dice rolls, that kind of thing. Would the transaction hash of the latest transaction be the ...
60
votes
9answers
24k views

How anonymous are Bitcoin transactions?

I read some sources that say Bitcoin transactions are anonymous, some that say they are semi-anonymous, and some that say they are not anonymous at all. In what ways are the transactions anonymous ...