Pith Number

pith:JWL572J6

pith:2009:JWL572J6L7CGSOAJEPECLRGK2Q

not attested not anchored not stored refs pending

An Upper Limit on the Stochastic Gravitational-Wave Background of Cosmological Origin

The LIGO Scientific Collaboration, the Virgo Collaboration

arxiv:0910.5772 v1 · 2009-10-30 · 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{JWL572J6L7CGSOAJEPECLRGK2Q}

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	2026-05-18T03:48:02.092692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d97dfe93e5fc469380923c825c4cad42aa2ec2a96f854acaef54c4bd7a1818a

Aliases

arxiv: 0910.5772 · arxiv_version: 0910.5772v1 · doi: 10.48550/arxiv.0910.5772 · pith_short_12: JWL572J6L7CG · pith_short_16: JWL572J6L7CGSOAJ · pith_short_8: JWL572J6

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/JWL572J6L7CGSOAJEPECLRGK2Q \
  | 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: 4d97dfe93e5fc469380923c825c4cad42aa2ec2a96f854acaef54c4bd7a1818a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "094db6f8a340d4f97ece3cb0eb92c0b5a58f33c1be0c40f569737fe8a6caa411",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-30T02:48:34Z",
    "title_canon_sha256": "ef67ed8a7d54f735b1051b49d909762bac69db4806be6ef407720ca9048eea85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5772",
    "kind": "arxiv",
    "version": 1
  }
}