NFT Knowledge 3

Question 1

What does the EIP-2981 standard provide for NFTs?

Accepted Answer

A royalty information interface

Answer

EIP-2981 defines a standard way for contracts to signal royalty payment information.

Question 2

Why is enforcing royalties on-chain difficult in practice?

Accepted Answer

Marketplaces must voluntarily honor the royalty data

Answer

EIP-2981 only reports royalty info; marketplaces must choose to enforce payment.

Question 3

What is a common security risk when implementing a public mint function?

Accepted Answer

Reentrancy and lack of supply/per-wallet limits

Answer

Unprotected mints can allow reentrancy and unlimited minting if supply and wallet caps aren't enforced.

Question 4

What does it mean for NFT metadata to be 'immutable'?

Accepted Answer

The metadata cannot be changed after minting

Answer

Immutable metadata means the attributes and media references are fixed and cannot be altered later.

Question 5

Which hashing approach lets IPFS content addresses guarantee data integrity?

Accepted Answer

Content-addressed CIDs derived from the file's hash

Answer

IPFS CIDs are derived from the content hash, so any change to the file changes the address.

NFT Development Practice Test