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title: Lexicon
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# Satoshi Nakamoto Lexicon
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## Addresses

There's a separate public/private keypair for every bitcoin address.  You don't have a single private key that unlocks everything.  Bitcoin addresses are a 160-bit hash of the public key, everything else in the system is 256-bit. - [Re: Bitcoin Address Collisions](/docs/forum/bitcoin-forum/65)

Bitcoins are sent to and from bitcoin addresses, which are essentially random numbers with no identifying information. - [Re: Repost: How anonymous are bitcoins?](/docs/forum/bitcoin-forum/7)

## Banks