Pith Number

pith:EMHYSW5G

pith:2019:EMHYSW5G5XXWJSLKBN3XLBPIMA

not attested not anchored not stored refs pending

Weighing Melnick 34: the most massive binary system known

A. M. T. Pollock, Joachim M. Bestenlehner, Katie A. Tehrani, Olivier Schnurr, Paul A. Crowther, Richard J. Parker, Stuart P. Littlefair

arxiv:1901.04769 v1 · 2019-01-15 · 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{EMHYSW5G5XXWJSLKBN3XLBPIMA}

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	2026-05-17T23:55:52.699087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

230f895ba6edef64c96a0b777585e8600cf8a4500e414c5ba05607c54f0aaf72

Aliases

arxiv: 1901.04769 · arxiv_version: 1901.04769v1 · doi: 10.48550/arxiv.1901.04769 · pith_short_12: EMHYSW5G5XXW · pith_short_16: EMHYSW5G5XXWJSLK · pith_short_8: EMHYSW5G

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/EMHYSW5G5XXWJSLKBN3XLBPIMA \
  | 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: 230f895ba6edef64c96a0b777585e8600cf8a4500e414c5ba05607c54f0aaf72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61b2f3239564fe8a089ac3ca6520016e4c5c8b983a63ee9752b79eb8fc4e8876",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-15T11:20:30Z",
    "title_canon_sha256": "779e737a559a0c05ddb9f47e2b9725db05a6c639c107e310bc8a5edbd90416a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04769",
    "kind": "arxiv",
    "version": 1
  }
}