Programmer Humor

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Every tech company rn (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 0 points 1 year ago

Facebook started as invite only. Great for an exclusive, loyal customer.

NFTs are different to blockchain, so you're just muddying the waters for yourself with the Walmart thing

Each item is represented by an NFT on the Walmart blockchain. The innovation in the chain of custody is that everyone is verifiably using the same database. It's a permissioned database, so it's proof of authority.

https://hbr.org/2022/01/how-walmart-canada-uses-blockchain-to-solve-supply-chain-challenges

Private keys sign hashes. Hashes cannot sign hashes because there is no associated private key.