Bitcoin P2P e-cash paper

November 15, 2008 From : Satoshi Nakamoto

Ray Dillinger wrote:
> One way to do this would be
> to have the person recieving the coin generate an asymmetric
> key pair, and then have half of it published with the
> transaction. In order to spend the coin later, s/he must
> demonstrate posession of the other half of the asymmetric
> key pair, probably by using it to sign the key provided by
> the new seller.

Right, it's ECC digital signatures. A new key pair is used for every transaction.

It's not pseudonymous in the sense of nyms identifying people, but it is at least a little pseudonymous in that the next action on a coin can be identified as being from the owner of that coin.

Satoshi Nakamoto

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