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September 23, 2012, 08:05:29 PM |
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A few months ago, maybe a year, I remember reading a research article about embedding messages into the blockchain. The method was not simply sending ASCII binary transactions (e.g. 0.01101101BTC). As I remember, the process involved something like:
1. Alice sends a transaction to some carefully sculpted keypair, and notifies Bob of that address. Alice redeems the coins so the public key is visible. 2. Bob performs some operations on the public key and derives an additional keypair, and sends coins there. Alice, knowing which operations Bob would be doing, watches the blockchain until she identifies Bob's transaction. 3. Somehow, with this info, Alice and Bob can communicate securely, but maybe also anonymously.
I've scoured the forum, and I've repeatedly asked google, but no dice. Can anyone remember the article? At the time, it was presented as a real problem because, while the ASCII transaction above could be detected and maybe discouraged, this method was completely undetectable.
Thanks.
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