Pith Number

pith:VHHCS43X

pith:2012:VHHCS43XULZVBC5ZNO7YUQGUX5

not attested not anchored not stored refs pending

Point-and-write --- Documenting Formal Mathematics by Reference

Carst Tankink, Christoph Lange, Josef Urban

arxiv:1204.5094 v2 · 2012-04-23 · cs.MS · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VHHCS43XULZVBC5ZNO7YUQGUX5}

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	2026-05-18T03:51:15.519890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9ce297377a2f3508bb96bbf8a40d4bf56428c583cb18bc5f36b87e53b981abe

Aliases

arxiv: 1204.5094 · arxiv_version: 1204.5094v2 · doi: 10.48550/arxiv.1204.5094 · pith_short_12: VHHCS43XULZV · pith_short_16: VHHCS43XULZVBC5Z · pith_short_8: VHHCS43X

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/VHHCS43XULZVBC5ZNO7YUQGUX5 \
  | 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: a9ce297377a2f3508bb96bbf8a40d4bf56428c583cb18bc5f36b87e53b981abe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ac538690a62cc1239f70d9f9a42d3dae85f380e0fce2a970f9e5b17ea91ac45",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2012-04-23T16:05:46Z",
    "title_canon_sha256": "6221cef6c978caa3ab245f8b54ed5dd1bfa30a7f3b3cb46e8ba52a730dc14497"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5094",
    "kind": "arxiv",
    "version": 2
  }
}