ERC-8382: Private Referable NFTs

ERC-8382 is a proposal on the Ethereum Magicians forum that extends ERC-721 with interoperable commitments to private NFT-to-NFT references, letting a token publish reference commitments without disclosing the referenced NFT, label, weight, or authorization material. The core interface is proof-system-neutral, with optional extensions standardizing proof-gated minting, selective reveal, canonical policies, registration-snapshot owner authorization, and rank-governed DAG insertion. The proposal also defines interoperability with ERC-5521, allowing revealed private references to be exposed through ERC-5521's public query surface after disclosure.