Pith Number

pith:TLHID7H7

pith:2022:TLHID7H7WTGYHSQH7SQ45QHIAU

not attested not anchored not stored refs pending

Comparative Verification of the Digital Library of Mathematical Functions and Computer Algebra Systems

Abdou Youssef, Akiko Aizawa, Andr\'e Greiner-Petter, Avi Trost, Bela Gipp, Howard S. Cohl, Moritz Schubotz, Rajen Dey

arxiv:2201.09488 v2 · 2022-01-24 · 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{TLHID7H7WTGYHSQH7SQ45QHIAU}

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	2026-07-05T04:30:32.942899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ace81fcffb4cd83ca07fca1cec0e80505cdb00f595bde7012c3986a07417fe0

Aliases

arxiv: 2201.09488 · arxiv_version: 2201.09488v2 · doi: 10.48550/arxiv.2201.09488 · pith_short_12: TLHID7H7WTGY · pith_short_16: TLHID7H7WTGYHSQH · pith_short_8: TLHID7H7

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/TLHID7H7WTGYHSQH7SQ45QHIAU \
  | 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: 9ace81fcffb4cd83ca07fca1cec0e80505cdb00f595bde7012c3986a07417fe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89e37cf29623c2e64f8ae01e2359ffe4b08cd39b304123e8b5174ac820a964ff",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2022-01-24T06:51:07Z",
    "title_canon_sha256": "935a6a3d5ec70ddfd5fd022dad7626ebab22aaeea49abec50d16073d5d410ceb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.09488",
    "kind": "arxiv",
    "version": 2
  }
}