Pith Number

pith:3SDJAYYZ

pith:2021:3SDJAYYZ6JZKBYDFXF7PJCDELZ

not attested not anchored not stored refs pending

Looking for the parents of LIGO's black holes

Davide Gerosa, Emanuele Berti, Kaze W. K. Wong, Matthew Mould, Vishal Baibhav

arxiv:2105.12140 v2 · 2021-05-25 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3SDJAYYZ6JZKBYDFXF7PJCDELZ}

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	2026-07-05T03:21:49.829840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc86906319f272a0e065b97ef488645e481ee30a0a0cac3709c14e8bd90558d1

Aliases

arxiv: 2105.12140 · arxiv_version: 2105.12140v2 · doi: 10.48550/arxiv.2105.12140 · pith_short_12: 3SDJAYYZ6JZK · pith_short_16: 3SDJAYYZ6JZKBYDF · pith_short_8: 3SDJAYYZ

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/3SDJAYYZ6JZKBYDFXF7PJCDELZ \
  | 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: dc86906319f272a0e065b97ef488645e481ee30a0a0cac3709c14e8bd90558d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dffc75b31d400d477d79ad9102df2d27a74c600c41f6d8994c916eac91ce9ce9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-05-25T18:00:02Z",
    "title_canon_sha256": "a936c53a5f6dfc3caaa996765fcdd9f1053097a5fec92e9cfd6ea6e36c758d25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.12140",
    "kind": "arxiv",
    "version": 2
  }
}