Pith Number

pith:S2QVGEZA

pith:2009:S2QVGEZAIFE3WNOO4EMXXQKSEV

not attested not anchored not stored refs pending

Comparison and Combination of CRF Catalogues

Julia Sokolova, Zinovy Malkin

arxiv:0911.3135 v1 · 2009-11-16 · 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{S2QVGEZAIFE3WNOO4EMXXQKSEV}

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	2026-05-18T04:36:18.784956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96a15313204149bb35cee1197bc152254e4ff145b2000450fcfae275909c4ac0

Aliases

arxiv: 0911.3135 · arxiv_version: 0911.3135v1 · doi: 10.48550/arxiv.0911.3135 · pith_short_12: S2QVGEZAIFE3 · pith_short_16: S2QVGEZAIFE3WNOO · pith_short_8: S2QVGEZA

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/S2QVGEZAIFE3WNOO4EMXXQKSEV \
  | 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: 96a15313204149bb35cee1197bc152254e4ff145b2000450fcfae275909c4ac0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a04d61f375570d5b13574d01034b07788b888335a62e64b51f33f6dfdca36979",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-16T20:14:48Z",
    "title_canon_sha256": "da5df00123166398f8569e55af64a5a919fed52518e337e6a58acf1d560b5bdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3135",
    "kind": "arxiv",
    "version": 1
  }
}