Research corpus ScalingBLC-STUDY-0198

Segregated Witness

Move witness data outside the input script. The transaction id that contracts depend on no longer covers the witness. A new weight limit counts witness bytes less than base bytes.

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Design paper
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Record

Authors: Eric Lombrozo, Johnson Lau and Pieter Wuille
Date: 2015
Publisher: Eric Lombrozo, Johnson Lau and Pieter Wuille
Version: Source cited by the 2015 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0198
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

Move witness data outside the input script. The transaction id that contracts depend on no longer covers the witness. A new weight limit counts witness bytes less than base bytes.

Where to read

Official source — BIP 141
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 public document. Not a copy of it, and not a claim about a later network that reused the name.

Relationships

Canonical readingBIP 141 study
Related paperTaproot
Related paperLightning

Cite this record

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

Author–date

Lombrozo, E., Lau, J., & Wuille, P. (2015). Segregated Witness. Eric Lombrozo, Johnson Lau and Pieter Wuille. https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki

BibTeX

@techreport{bip1412015,
  title = {Segregated Witness},
  author = {Eric Lombrozo, Johnson Lau and Pieter Wuille},
  year = {2015},
  institution = {Eric Lombrozo, Johnson Lau and Pieter Wuille},
  url = {https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/bip141}
}

RIS

TY  - RPRT
TI  - Segregated Witness
AU  - Eric Lombrozo
AU  - Johnson Lau
AU  - Pieter Wuille
PY  - 2015
PB  - Eric Lombrozo, Johnson Lau and Pieter Wuille
UR  - https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0198",
    "title": "Segregated Witness",
    "author": [
      {
        "literal": "Eric Lombrozo"
      },
      {
        "literal": "Johnson Lau"
      },
      {
        "literal": "Pieter Wuille"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2015
        ]
      ]
    },
    "publisher": "Eric Lombrozo, Johnson Lau and Pieter Wuille",
    "URL": "https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki",
    "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