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Re: Marked_Money

To: Matthew J Ghio <[email protected]>
Subject: Re: Marked_Money
From: "Perry E. Metzger" <[email protected]>
Date: Fri, 06 May 1994 07:15:42 -0400
Cc: [email protected]
In-Reply-To: Your message of "Thu, 05 May 1994 21:45:10 EDT." <[email protected]>
Reply-To: [email protected]
Sender: [email protected]


Matthew J Ghio says:
> >         Is there a way of marking digital coins, so the depositor
> > can be identified?
> 
> Only if the depositor marks them as such.  The depositor generates the
> coin, and gives it to the bank to sign it.  The bank signs it in
> exchange for another valid signed token.  The bank can't alter it in any
> way, the bank can only sign it.

You have the protocol reversed. It is the person who withdraws the
money who blinds a coin. Depositors can indeed be tracked by collusion
between the person minting the coin and the bank, but in practice this
would not be a problem.

Perry

References:
- Re: Marked_Money
  - From: Matthew J Ghio <[email protected]>

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