Research corpus InteroperabilityBLC-STUDY-0530

Hashed Time-Locked Collateral Contract

BIP 197, Hashed Time-Locked Collateral Contract. A script for generalized debt agreement contract based on Hashed Time-Lock Contract (BIP 199) transactions according to the Atomic Loans specification (https://arxiv.org/pdf/1901.05117.pdf).

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Record

Authors: Matthew Black
Date: 2019
Publisher: Matthew Black
Version: Source cited by the 2019 study. The study is the reading. This page does not add a second essay.
Document ID: BLC-STUDY-0530
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

Where to read

Official source — BIP 197
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: Draft. A reading of the public specification, not a copy of it and not a certification.

Relationships

Canonical readingBIP 197 study
Related paperLightning
Related paperIBC
Related paperAtomic swaps

Cite this record

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

Author–date

Black, M. (2019). Hashed Time-Locked Collateral Contract. Matthew Black. https://bips.dev/197

BibTeX

@techreport{bip1972019,
  title = {Hashed Time-Locked Collateral Contract},
  author = {Matthew Black},
  year = {2019},
  institution = {Matthew Black},
  url = {https://bips.dev/197},
  note = {Rights status: Official external source only. Blockchain Lab record: https://blockchainlab.com/research/corpus/papers/bip-197}
}

RIS

TY  - RPRT
TI  - Hashed Time-Locked Collateral Contract
AU  - Matthew Black
PY  - 2019
PB  - Matthew Black
UR  - https://bips.dev/197
N1  - Rights status: Official external source only
ER  -

CSL-JSON

[
  {
    "type": "report",
    "id": "BLC-STUDY-0530",
    "title": "Hashed Time-Locked Collateral Contract",
    "author": [
      {
        "literal": "Matthew Black"
      }
    ],
    "issued": {
      "date-parts": [
        [
          2019
        ]
      ]
    },
    "publisher": "Matthew Black",
    "URL": "https://bips.dev/197",
    "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