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> Every sale is on the blockchain, so if somebody creates multiple sales of the same item, it would immediately be visible Just use a different private key for

> Every sale is on the blockchain, so if somebody creates multiple sales of the same item, it would immediately be visible Just use a different private key for each sale.

kkjjkgjjgg 5y ago
The private key identifies the artist, so that is not a solution.
- stale2002 5y ago
  No, the private key does not identify the artist. Instead, what identifies the artist, is the artist saying "hey, this thing over here is the real one!". None of which involves a Blockchain.
  - kkjjkgjjgg 5y ago
    Not sure if you understand how public key cryptography works? The artists says "this is my key" to their public key. Then they can use their key to sign things, and people can verify the signature because they can check that it belongs to the public key, which the artist has publicly announced.
    - lottin 5y ago
      That doesn't work, because anyone can falsely claim to be the artist.
      - kkjjkgjjgg 5y ago
        Obviously you need a way to identify the real artist. For example if they put their public key on their official web site, it would be a pretty good indicator. People also used to create chains of trust with public key infrastructure. Maybe you trust Bob, and Bob trusts Alice, and Alice has personally met the artist at Burning Man and verified their key there. Or you go to the government and let them provide a register of identities. In any case it is a separate problem. If you can't verify the artist, don't buy the NFT, or only buy it at a discount, accounting for the risk. Forgeries are a problem with physical works of art, too.
        stale2002 5y ago
        > Obviously you need a way to identify the real artist Thats the point though. Nothing about the blockchain has anything to do with this part, and this is really the only part that matters. So, once again, my point stands. The private key has nothing to do with identifying the real artist. Instead, it is something else entirely that identifies the real artist. > on their official web site So then the official website is what is doing the identifying here, of what the real art it. Not the blockchain. It is the artist themselves, saying "This art is the real one", not cryptography. It is not proof of work, or proof of signed private keys. Instead, it is proof of "official website". > In any case it is a separate problem. It is the only problem that matters. The actual way to identify the real artist, separate from the blockchain, is what is actually doing all of the heavy lifting here. The private key isn't doing anything on the important part.
        kkjjkgjjgg 5y ago
        " and this is really the only part that matters." No it isn't. The point of NFTs is to prove ownership and facilitate trade. Not identifying creators.
        stale2002 5y ago
        But you can't prove ownership of the actual art, with an NFT. You can only prove ownership of that specific crypto transaction, which might be just a fake NFT, or duplicate. There is nothing about crypto that actually proves it was the "real" NFT, or real art. You need something else to actually prove that you own the "real" piece of art or NFT. > Not identifying creators If you are unable to identify creators then you are unable to prove ownership, because that NFT could just be a fake one, or even a duplicate that the creator has issued many times without you knowing it. With crypto alone, you'd only be able to prove that you own something that might just be a fake or duplicate, and anyone can make as many fakes or duplicates as they want, so that's not really proving ownership.
        kkjjkgjjgg 5y ago

> Every sale is on the blockchain, so if somebody creates multiple sales of the same item, it would immediately be visible Just use a different private key for each sale.

kkjjkgjjgg 5y ago

The private key identifies the artist, so that is not a solution.

stale2002 5y ago
No, the private key does not identify the artist. Instead, what identifies the artist, is the artist saying "hey, this thing over here is the real one!". None of which involves a Blockchain.
- kkjjkgjjgg 5y ago
  Not sure if you understand how public key cryptography works? The artists says "this is my key" to their public key. Then they can use their key to sign things, and people can verify the signature because they can check that it belongs to the public key, which the artist has publicly announced.
  - lottin 5y ago
    That doesn't work, because anyone can falsely claim to be the artist.
    - kkjjkgjjgg 5y ago
      Obviously you need a way to identify the real artist. For example if they put their public key on their official web site, it would be a pretty good indicator. People also used to create chains of trust with public key infrastructure. Maybe you trust Bob, and Bob trusts Alice, and Alice has personally met the artist at Burning Man and verified their key there. Or you go to the government and let them provide a register of identities. In any case it is a separate problem. If you can't verify the artist, don't buy the NFT, or only buy it at a discount, accounting for the risk. Forgeries are a problem with physical works of art, too.
      - stale2002 5y ago
        > Obviously you need a way to identify the real artist Thats the point though. Nothing about the blockchain has anything to do with this part, and this is really the only part that matters. So, once again, my point stands. The private key has nothing to do with identifying the real artist. Instead, it is something else entirely that identifies the real artist. > on their official web site So then the official website is what is doing the identifying here, of what the real art it. Not the blockchain. It is the artist themselves, saying "This art is the real one", not cryptography. It is not proof of work, or proof of signed private keys. Instead, it is proof of "official website". > In any case it is a separate problem. It is the only problem that matters. The actual way to identify the real artist, separate from the blockchain, is what is actually doing all of the heavy lifting here. The private key isn't doing anything on the important part.
        kkjjkgjjgg 5y ago
        " and this is really the only part that matters." No it isn't. The point of NFTs is to prove ownership and facilitate trade. Not identifying creators.
        stale2002 5y ago
        But you can't prove ownership of the actual art, with an NFT. You can only prove ownership of that specific crypto transaction, which might be just a fake NFT, or duplicate. There is nothing about crypto that actually proves it was the "real" NFT, or real art. You need something else to actually prove that you own the "real" piece of art or NFT. > Not identifying creators If you are unable to identify creators then you are unable to prove ownership, because that NFT could just be a fake one, or even a duplicate that the creator has issued many times without you knowing it. With crypto alone, you'd only be able to prove that you own something that might just be a fake or duplicate, and anyone can make as many fakes or duplicates as they want, so that's not really proving ownership.
        kkjjkgjjgg 5y ago