ERC-8048: Onchain Metadata for Token Registries #1259
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Introduces a new standard for storing arbitrary metadata directly onchain for ERC-721, ERC-1155, ERC-6909, and ERC-8004 registries. Key features: - String-key, bytes-value metadata store interface - Required getMetadata() function and MetadataSet event - Backwards compatible with existing token standards - Enables trustless AI agents, proof of personhood, and custom metadata This addresses the long-felt need for uniform onchain metadata storage while avoiding gas inefficiencies.
abcoathup
reviewed
Oct 17, 2025
abcoathup
reviewed
Oct 17, 2025
abcoathup
reviewed
Oct 17, 2025
I agree. Sounds good. Co-authored-by: Andrew B Coathup <[email protected]>
thx! Co-authored-by: Andrew B Coathup <[email protected]>
Co-authored-by: Andrew B Coathup <[email protected]>
nxt3d
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- Rename ERCS/_onchain-metadata.md to ERCS/erc-8048.md to match assigned ERC number - Update created date from 2025-10-2 to 2025-9-30
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- Add Optional Diamond Storage section specifying namespace 'erc8048.onchain.metadata.storage' - Add Diamond Storage reference implementation with predictable storage locations - Update pragma to ^0.8.25 in Basic Implementation - Add security considerations for Diamond Storage (ERC-8042) - Clarify benefits for cross-chain applications using inclusion proofs - Add both Basic and Diamond Storage implementation examples
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The commit 2acaacf (as a parent of c30d2ce) contains errors. |
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Introduces a new standard for storing arbitrary metadata directly onchain for ERC-721, ERC-1155, ERC-6909, and ERC-8004 registries.
Key features:
getMetadata()function andMetadataSeteventThis addresses the long-felt need for uniform onchain metadata storage while avoiding gas inefficiencies.
Note on Standard History:
This onchain metadata standard was originally introduced as part of ERC-8041 on September 30, 2025 (commit
13f11f2). ERC-8041 later pivoted to focus on fixed-supply agent collections, so this core metadata functionality is being reintroduced as a standalone standard.