[Cryptography] Checkoin: physical crypto-cash

Bill Stewart billstewart at pobox.com
Sun Jul 16 18:55:38 EDT 2017


On 7/16/2017 1:13 PM, Camille Harang via cryptography wrote:
> "There are three main layers of verifications, first one is geolocation 
> (non mandatory, anonymous and optionally encrypted) in order to detect 
> duplicate UUID in circulation (distance and time would become 
> inconsistent, so the packaging identified as corrupted), second layer is 

If the user can identify the UUID, and the system can identify the 
coin's UUID remotely (for duplicate detection), then any geolocation is 
not anonymous until you give the coin to somebody else, because the 
person you got it from may have published that information somewhere. 
So one of these coins would become a tracker.


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