Pith Number

pith:5SJC2HML

pith:2012:5SJC2HMLA2MRX5DK47QMEUF5EX

not attested not anchored not stored refs pending

The Grammar Hammer of 2012

Vadim Zaytsev

arxiv:1212.4446 v1 · 2012-12-17 · cs.FL · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5SJC2HMLA2MRX5DK47QMEUF5EX}

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	2026-05-18T03:38:12.939035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec922d1d8b06991bf46ae7e0c250bd25c3717c9e851af5eb1c19133e453d77eb

Aliases

arxiv: 1212.4446 · arxiv_version: 1212.4446v1 · doi: 10.48550/arxiv.1212.4446 · pith_short_12: 5SJC2HMLA2MR · pith_short_16: 5SJC2HMLA2MRX5DK · pith_short_8: 5SJC2HML

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/5SJC2HMLA2MRX5DK47QMEUF5EX \
  | 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: ec922d1d8b06991bf46ae7e0c250bd25c3717c9e851af5eb1c19133e453d77eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d385c8da3f1ce3c8820fbd4c3cc3af8b5580cc1cd274b4bd682ad8bfb3cbf95",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-12-17T19:42:16Z",
    "title_canon_sha256": "65c0609a14ac1e2be4153e7b50e6ea74d7ca96f85cf4eb3e641942a67a0e57b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4446",
    "kind": "arxiv",
    "version": 1
  }
}