Research corpus PrivacyBLC-STUDY-0422

Vendor Metadata Extension for NFTs

ERC 4955, Vendor Metadata Extension for NFTs. This EIP standardizes a schema for NFTs metadata to add new field namespaces to the JSON schema for EIP-721 and EIP-1155 NFTs.

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Record

Authors: Ignacio Mazzara
Date: 2022
Publisher: Ignacio Mazzara
Version: Source cited by the 2022 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0422
DOI: None recorded
Last reviewed: 1 October 2026
Licence: No licence recorded. Rights status under review.

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Direct answer

ERC 4955, Vendor Metadata Extension for NFTs. This EIP standardizes a schema for NFTs metadata to add new field namespaces to the JSON schema for EIP-721 and EIP-1155 NFTs.

Where to read

Official source — ERC 4955
Blockchain Lab study, the canonical readingOriginal commentary. Not a transcription of the paper.

Metadata and commentary only. The reading is the study page.

Full text

Full text is not published on this page. Public availability is not a licence to republish a document. Blockchain Lab has not recorded a licence that permits an HTML transcription, a training set, or a retrieval corpus of the paper. Text on this page is Blockchain Lab's own wording, or a pointer to a study that is also Blockchain Lab's wording.

What changed

Status in the source: Final. A reading of the public specification, not a copy of it and not a certification.

Relationships

Canonical readingERC 4955 study
Related paperGroth16
Related paperBulletproofs
Related paperTaproot

Cite this record

These citations point at the source document. They are not a licence to copy it.

Author–date

Mazzara, I. (2022). Vendor Metadata Extension for NFTs. Ignacio Mazzara. https://eips.ethereum.org/EIPS/eip-4955

BibTeX

@techreport{erc49552022,
  title = {Vendor Metadata Extension for NFTs},
  author = {Ignacio Mazzara},
  year = {2022},
  institution = {Ignacio Mazzara},
  url = {https://eips.ethereum.org/EIPS/eip-4955},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/erc-4955}
}

RIS

TY  - RPRT
TI  - Vendor Metadata Extension for NFTs
AU  - Ignacio Mazzara
PY  - 2022
PB  - Ignacio Mazzara
UR  - https://eips.ethereum.org/EIPS/eip-4955
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0422",
    "title": "Vendor Metadata Extension for NFTs",
    "author": [
      {
        "literal": "Ignacio Mazzara"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2022
        ]
      ]
    },
    "publisher": "Ignacio Mazzara",
    "URL": "https://eips.ethereum.org/EIPS/eip-4955",
    "note": "Rights status: Official external source only. Not a licence to republish the paper."
  }
]

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Rights record

Source status: Official source
Use status: Metadata and commentary only. The reading is the study page.
Rights: Official external source only
Training and retrieval: Not permitted from this site. There is no rights-cleared full text to retrieve or to train on.

Rights and licensing Corrections