Pith Number

pith:HQ5NL56A

pith:2013:HQ5NL56AZXLSU5T5Y22QN3GVOY

not attested not anchored not stored refs pending

The Gravitational-Wave Discovery Space of Pulsar Timing Arrays

Curt Cutler, Joseph Lazio, Michele Vallisneri, Sarah Burke-Spolaor, Walid Majid

arxiv:1309.2581 v1 · 2013-09-10 · 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{HQ5NL56AZXLSU5T5Y22QN3GVOY}

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	2026-05-18T02:57:52.649806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c3ad5f7c0cdd72a767dc6b506ecd57623f767d88ef2c615a3b03e39b055f760

Aliases

arxiv: 1309.2581 · arxiv_version: 1309.2581v1 · doi: 10.48550/arxiv.1309.2581 · pith_short_12: HQ5NL56AZXLS · pith_short_16: HQ5NL56AZXLSU5T5 · pith_short_8: HQ5NL56A

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/HQ5NL56AZXLSU5T5Y22QN3GVOY \
  | 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: 3c3ad5f7c0cdd72a767dc6b506ecd57623f767d88ef2c615a3b03e39b055f760

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f063fba48d7aa57bc3d20c8c3e51207bb7e91d361790a551aa7574e2e0507e57",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-09-10T17:22:32Z",
    "title_canon_sha256": "c34f83521e63637a5056e558da4c76f709e6e68a3ce55808470f2ed99d3388b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2581",
    "kind": "arxiv",
    "version": 1
  }
}