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What happens if the autograph owner emails the hash to their friends? What does “own” mean here? They can all print it and frame it on the wall. Meanwhile Twitt

What happens if the autograph owner emails the hash to their friends? What does “own” mean here? They can all print it and frame it on the wall. Meanwhile Twitter’s data systems go down and the tweet disappears, no one “has” the actual tweet. I wouldn’t mind having $2M I didn’t need to bid on this level of abstraction.

ineedasername 6y ago
I guess you could print out the hash & get Dorsey to sign it by hand as well. That should be part of the deal. That way you know it's the one. Also, in the highly unlikely event of a hash collision, the Dorsey hash wins and the other hash has to go back to to /dev/null, metaphorical head held down in shame.
- hn_throwaway_99 6y ago
  Doesn't that completely defeat the point of the NFT if the thing you really need to prove ownership is a signed autograph from the author? We've valued signed autographed copies of original works highly for a very long time without NFTs.
  - dontblink 6y ago
    I think that was the point (in other words, yes).
  - qqii 6y ago
    It would if it worked that way, but it doesn't: https://news.ycombinator.com/item?id=26372052 https://news.ycombinator.com/item?id=26372052
- qqii 6y ago
  What's unique here isn't just a plain hash but the tuple (ethereum contact id, nft token id, address public key) on the blockchain. Having the tuple is worthless becuase ownership is having the associated private key.
qqii 6y ago
Ownership in this case is a NFT (EIP-721, a smart contact standard for non fungible (unique and single ownership) tokens) on the L2 Matic sidechain for Ethereum return the public key to your public-private keypair. Duplicating the token means creating an exact bitwise duplicate of the NFT on the Matic sidechain, which the Ethereum Virtual Machine will not allow. There is no hash to send to someone else and unless there is an exploit in the EVM the NFT can only be owned by one person. To be clear these NFTs only has the meaning of "signed tweet" because people decide it does. If you copied their smart contact and launched your own exact replica Jack could verify on your platform and a new and different NFT would be minted with the same "accepted representation".

ineedasername 6y ago

I guess you could print out the hash & get Dorsey to sign it by hand as well. That should be part of the deal. That way you know it's the one. Also, in the highly unlikely event of a hash collision, the Dorsey hash wins and the other hash has to go back to to /dev/null, metaphorical head held down in shame.

hn_throwaway_99 6y ago
Doesn't that completely defeat the point of the NFT if the thing you really need to prove ownership is a signed autograph from the author? We've valued signed autographed copies of original works highly for a very long time without NFTs.
- dontblink 6y ago
  I think that was the point (in other words, yes).
- qqii 6y ago
  It would if it worked that way, but it doesn't: https://news.ycombinator.com/item?id=26372052 https://news.ycombinator.com/item?id=26372052
qqii 6y ago
What's unique here isn't just a plain hash but the tuple (ethereum contact id, nft token id, address public key) on the blockchain. Having the tuple is worthless becuase ownership is having the associated private key.

qqii 6y ago

Ownership in this case is a NFT (EIP-721, a smart contact standard for non fungible (unique and single ownership) tokens) on the L2 Matic sidechain for Ethereum return the public key to your public-private keypair. Duplicating the token means creating an exact bitwise duplicate of the NFT on the Matic sidechain, which the Ethereum Virtual Machine will not allow. There is no hash to send to someone else and unless there is an exploit in the EVM the NFT can only be owned by one person. To be clear these NFTs only has the meaning of "signed tweet" because people decide it does. If you copied their smart contact and launched your own exact replica Jack could verify on your platform and a new and different NFT would be minted with the same "accepted representation".