Research corpus Data and agentsBLC-STUDY-0630

API3: first-party oracles and Airnode

API3's design asks the API provider to run the oracle, so the signer is the party who already operates the API, rather than a third-party node repeating it.

Official external source only
Design paper
Official source

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Record

Authors: API3
Date: 2020
Publisher: API3
Version: Source cited by the 2020 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0630
DOI: None recorded
Last reviewed: 1 October 2026
Licence: No licence recorded. Rights status under review.

No hash is published. This build does not store those PDF bytes, so a checksum would be invented. Where a legacy path exists, it points at the Internet Archive copy of the old library.

Direct answer

API3's design asks the API provider to run the oracle, so the signer is the party who already operates the API, rather than a third-party node repeating it.

Where to read

Official source — API3 documentation
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

A reading of the project's public design document. Not a copy, not a benchmark, and not an offer.

Relationships

Canonical readingAPI3 study
Related paperChainlink
Related paperTown Crier
Related paperDECO

Cite this record

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

Author–date

API3 (2020). API3: first-party oracles and Airnode. API3. https://docs.api3.org/

BibTeX

@techreport{api3airnode2020,
  title = {API3: first-party oracles and Airnode},
  author = {API3},
  year = {2020},
  institution = {API3},
  url = {https://docs.api3.org/},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/api3-airnode}
}

RIS

TY  - RPRT
TI  - API3: first-party oracles and Airnode
AU  - API3
PY  - 2020
PB  - API3
UR  - https://docs.api3.org/
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0630",
    "title": "API3: first-party oracles and Airnode",
    "author": [
      {
        "literal": "API3"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2020
        ]
      ]
    },
    "publisher": "API3",
    "URL": "https://docs.api3.org/",
    "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