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ERC-721 vs. ERC-1155 Standards Flashcards

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Read the first 7 ERC-721 vs. ERC-1155 Standards flashcards as text

  1. Both ERC-721 and ERC-1155 rely on which standard for interface detection?

    Answer: ERC-165

    ERC-165 supportsInterface lets contracts advertise which standards they implement.

  2. What does setApprovalForAll do in both standards?

    Answer: Grants or revokes an operator control over all of the caller's tokens

    setApprovalForAll authorizes an operator to manage all of a holder's tokens at once.

  3. Which standard supports per-token single-approval via approve(address, tokenId)?

    Answer: ERC-721

    ERC-721 offers approve for a specific tokenId, while ERC-1155 only uses operator approvals.

  4. An artist mints a 1-of-1 artwork with rich provenance and per-token metadata. Which standard is most conventional?

    Answer: ERC-721

    ERC-721 is the conventional choice for unique 1-of-1 collectibles with distinct metadata.

  5. In ERC-1155, what happens to a token ID when its total supply is burned to zero?

    Answer: That ID simply has zero balance and can often be re-minted by logic

    Burning to zero leaves the ID with no supply; re-minting depends on the contract's logic.

  6. Why might a large 10,000-item PFP collection still choose ERC-721 over ERC-1155?

    Answer: Marketplace and tooling support plus per-token uniqueness expectations favor ERC-721

    Ecosystem tooling and the expectation of unique, individually owned tokens often favor ERC-721 for PFPs.

  7. Which standard lets a single token ID be owned by thousands of addresses simultaneously?

    Answer: ERC-1155

    ERC-1155 fungible IDs can be held by many addresses, unlike ERC-721's one-owner-per-ID rule.