Pith Number

pith:O6R7F2BN

pith:2023:O6R7F2BNFDQKVH4E27RQYC4ALK

not attested not anchored not stored refs pending

Constraints on the multiplicity of the most massive stars known: R136 a1, a2, a3, and c

A. A. C. Sander, F. Najarro, H. Sana, K. A. Bostroem, L. Mahy, L. Oskinova, P. A. Crowther, T. Shenar

arxiv:2309.13113 v1 · 2023-09-22 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O6R7F2BNFDQKVH4E27RQYC4ALK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T07:07:16.623443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77a3f2e82d28e0aa9f84d7e30c0b805a9e43b2def31c048e33ac4457c7e812f2

Aliases

arxiv: 2309.13113 · arxiv_version: 2309.13113v1 · doi: 10.48550/arxiv.2309.13113 · pith_short_12: O6R7F2BNFDQK · pith_short_16: O6R7F2BNFDQKVH4E · pith_short_8: O6R7F2BN

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/O6R7F2BNFDQKVH4E27RQYC4ALK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 77a3f2e82d28e0aa9f84d7e30c0b805a9e43b2def31c048e33ac4457c7e812f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a67ccf60cca25ba096bbf5d486c318ab89522786bc9ce3f5d3ceadd7c42ee9a6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2023-09-22T18:00:04Z",
    "title_canon_sha256": "24319874b8cae0d676fc137ceb589a8cfe66d72381610a3a4870eba386498f88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.13113",
    "kind": "arxiv",
    "version": 1
  }
}