Pith Number

pith:A3524VE4

pith:2011:A3524VE4H3JSQZIO673U4LAARD

not attested not anchored not stored refs pending

Some examples of trapped surfaces

Ingemar Bengtsson

arxiv:1112.5318 v1 · 2011-12-22 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A3524VE4H3JSQZIO673U4LAARD}

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	2026-05-18T04:05:47.792805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06fbae549c3ed328650ef7f74e2c0088d94584349a727f21673a681dbb614a12

Aliases

arxiv: 1112.5318 · arxiv_version: 1112.5318v1 · doi: 10.48550/arxiv.1112.5318 · pith_short_12: A3524VE4H3JS · pith_short_16: A3524VE4H3JSQZIO · pith_short_8: A3524VE4

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/A3524VE4H3JSQZIO673U4LAARD \
  | 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: 06fbae549c3ed328650ef7f74e2c0088d94584349a727f21673a681dbb614a12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "894914b0e27f1bf6363837f9c08f6e6980bcfbeab19c873d45845a0b116a69f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-12-22T14:08:34Z",
    "title_canon_sha256": "4dc698f5f02578f6e7bbde41a3ed2f4c8e35e2fef4ee2335a722110fad15fb7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5318",
    "kind": "arxiv",
    "version": 1
  }
}