Pith Number

pith:QPY4IMIO

pith:2010:QPY4IMIOSXKZEBBS56SGLOYZNA

not attested not anchored not stored refs pending

Constraining the mass of the graviton using coalescing black-hole binaries

Drew Keppel, P. Ajith

arxiv:1004.0284 v3 · 2010-04-02 · gr-qc · astro-ph.CO · 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{QPY4IMIOSXKZEBBS56SGLOYZNA}

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	2026-05-18T04:32:43.560913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83f1c4310e95d5920432efa465bb196831d8d8baf8bca1ff6bc919dfa54e2961

Aliases

arxiv: 1004.0284 · arxiv_version: 1004.0284v3 · doi: 10.48550/arxiv.1004.0284 · pith_short_12: QPY4IMIOSXKZ · pith_short_16: QPY4IMIOSXKZEBBS · pith_short_8: QPY4IMIO

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/QPY4IMIOSXKZEBBS56SGLOYZNA \
  | 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: 83f1c4310e95d5920432efa465bb196831d8d8baf8bca1ff6bc919dfa54e2961

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034a311ac4949679a3ec7612f0197b61b06e72c85c221057af831a6b3150d1dd",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-04-02T04:27:29Z",
    "title_canon_sha256": "60bc4e5ff9a946a3db532d68723118f3055fd9ee8db101fbe619f30ab49761d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0284",
    "kind": "arxiv",
    "version": 3
  }
}