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>as a blockchain cannot implement digital cash

I guess Satoshi would disagree with the notion since the initial promise of Bitcoin was that it was in fact "electronic cash".



I guess they would. But my take on it is that the very title of the Bitcoin whitepaper contains two lies.

> "Bitcoin: A Peer-to-Peer Electronic Cash System"

1. It's not cash as so many properties of cash are not met. It is technically a simple writing game, just like wire transfer between accounts at a same bank.

2. It is not p2p. The underlying protocol that allows to maintain the distributed ledger is; but transactions, since they're account-based and only a writing game (contrary to actual cash transactions which are bearer-based), are centralized on that distributed p2p-maintained ledger. So the "cash system" (which is not that either) is not p2p.




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