"Originally, a coin can be just a chain of signatures. With a timestamp service, the old ones could be dropped eventually before there's too much backtrace fan-out, or coins could be kept individually or in denominations. It's the need to check for the absence of double-spends that requires global knowledge of all transactions.

The challenge is, how do you prove that no other spends exist? It seems a node must know about all transactions to be able to verify that. If it only knows the hash of the in/outpoints, it can't check the signatures to see if an outpoint has been spent before. Do you have any ideas on this?

It's hard to think of how to apply zero-knowledge-proofs in this case.

We're trying to prove the absence of something, which seems to require knowing about all and checking that the something isn't included." Satoshi Nakamoto BTT August 11, 2010

Owner Log Records for :
i/2222.png
Linked OpenSea NFT
Linked Qora Name :
/penang on /i World Map
Owner :
Okchai since June 2023

AITWAY.COM 50% off for OpenSea Qora & Qora2 NFT holders

{ - [] - }