Research corpus ScalingBLC-STUDY-0330

Serve historical block hashes from state

EIP 2935, Serve historical block hashes from state. Store last HISTORY_SERVE_WINDOW historical block hashes in the storage of a system contract as part of the block processing logic.

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Record

Authors: Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi
Date: 2020
Publisher: Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi
Version: Source cited by the 2020 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0330
DOI: None recorded
Last reviewed: 1 October 2026
Licence: No licence recorded. Rights status under review.

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Direct answer

EIP 2935, Serve historical block hashes from state. Store last HISTORY_SERVE_WINDOW historical block hashes in the storage of a system contract as part of the block processing logic.

Where to read

Official source — EIP 2935
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

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What changed

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

Relationships

Canonical readingEIP 2935 study
Related paperEIP-4844
Related paperPlasma
Related paperArbitrum

Cite this record

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

Author–date

Buterin, V., Stanczak, T., Ballet, G., Singh, G., Jasoria, T., Hagopian, I., Brouwer, J., & Mahmoodi, S. (2020). Serve historical block hashes from state. Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi. https://eips.ethereum.org/EIPS/eip-2935

BibTeX

@techreport{eip29352020,
  title = {Serve historical block hashes from state},
  author = {Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi},
  year = {2020},
  institution = {Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi},
  url = {https://eips.ethereum.org/EIPS/eip-2935},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/eip-2935}
}

RIS

TY  - RPRT
TI  - Serve historical block hashes from state
AU  - Vitalik Buterin
AU  - Tomasz Stanczak
AU  - Guillaume Ballet
AU  - Gajinder Singh
AU  - Tanishq Jasoria
AU  - Ignacio Hagopian
AU  - Jochem Brouwer
AU  - Sina Mahmoodi
PY  - 2020
PB  - Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi
UR  - https://eips.ethereum.org/EIPS/eip-2935
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0330",
    "title": "Serve historical block hashes from state",
    "author": [
      {
        "literal": "Vitalik Buterin"
      },
      {
        "literal": "Tomasz Stanczak"
      },
      {
        "literal": "Guillaume Ballet"
      },
      {
        "literal": "Gajinder Singh"
      },
      {
        "literal": "Tanishq Jasoria"
      },
      {
        "literal": "Ignacio Hagopian"
      },
      {
        "literal": "Jochem Brouwer"
      },
      {
        "literal": "Sina Mahmoodi"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2020
        ]
      ]
    },
    "publisher": "Vitalik Buterin , Tomasz Stanczak , Guillaume Ballet , Gajinder Singh , Tanishq Jasoria , Ignacio Hagopian , Jochem Brouwer , Sina Mahmoodi",
    "URL": "https://eips.ethereum.org/EIPS/eip-2935",
    "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.

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