Pith Number

pith:7NBD2SKS

pith:2012:7NBD2SKSMOCKBB54COU65ZMTQF

not attested not anchored not stored refs pending

Gravitational-wave standard siren without redshift identification

Atsushi Nishizawa, Atsushi Taruya, Kent Yagi, Takahiro Tanaka

arxiv:1204.2877 v1 · 2012-04-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7NBD2SKSMOCKBB54COU65ZMTQF}

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	2026-05-18T01:57:52.885883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb423d49526384a087bc13a9eee593816f7e13a2fb1b4e7850b0a4f33e984ab1

Aliases

arxiv: 1204.2877 · arxiv_version: 1204.2877v1 · doi: 10.48550/arxiv.1204.2877 · pith_short_12: 7NBD2SKSMOCK · pith_short_16: 7NBD2SKSMOCKBB54 · pith_short_8: 7NBD2SKS

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/7NBD2SKSMOCKBB54COU65ZMTQF \
  | 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: fb423d49526384a087bc13a9eee593816f7e13a2fb1b4e7850b0a4f33e984ab1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "987afc40eaa8fc3e1eaf3cc85678b33fe36f661dccbddd029e49a61036f31ed2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-13T04:35:44Z",
    "title_canon_sha256": "bcb1781627e449d2d0bc8fcfadfe9bb36096d944c362bfa89ae6b8fe09091d0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2877",
    "kind": "arxiv",
    "version": 1
  }
}