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A from-scratch tour of Bitcoin in Python

karpathy.github.io

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Re: A from-scratch tour of Bitcoin in Python

#4
post #2

> We don’t just get to share code, we get to share a running computer, and anyone anywhere can use it in an open and permissionless manner Can someone explain what this means? Its not explained anywhere in the post.

Presumably a reference to blockchain as a distributed ledger.

Re: A from-scratch tour of Bitcoin in Python

#5

Kind of surprised Andrej has time to work on anything besides self-driving cars

It's maybe an ... interesting sign that someone with substantial liquidity from tesla shares at this point in history is apparently finding cryptocurrency an enjoyable diversion/investment vehicle?

Re: A from-scratch tour of Bitcoin in Python

#7
post #2

> We don’t just get to share code, we get to share a running computer, and anyone anywhere can use it in an open and permissionless manner Can someone explain what this means? Its not explained anywhere in the post.

He is probably referring to Ethereum, which was conceived as a "global computer", operating in an open and permissionless manner.

Re: A from-scratch tour of Bitcoin in Python

#8
post #2

> We don’t just get to share code, we get to share a running computer, and anyone anywhere can use it in an open and permissionless manner Can someone explain what this means? Its not explained anywhere in the post.

He links committing transactions to the blockchain to storing state in a distributed data structure... which is of course, in the case of Bitcoin, implemented in arguably the most wasteful, ham-fisted, environmentally disastrous way possible.

There's also the ethereum VM which is a slow decentralized state machine capable of executing code...

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