Pith Number

pith:YTRRSGEF

pith:2011:YTRRSGEFDAXXWULBNQF3BHZQGU

not attested not anchored not stored refs pending

Context-free ordinals

Szabolcs Ivan, Zoltan Esik

arxiv:1103.5421 v1 · 2011-03-28 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YTRRSGEFDAXXWULBNQF3BHZQGU}

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	2026-05-18T02:22:11.586367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4e3191885182f7b51616c0bb09f30350218495764de6d5b135fc25257b20d95

Aliases

arxiv: 1103.5421 · arxiv_version: 1103.5421v1 · doi: 10.48550/arxiv.1103.5421 · pith_short_12: YTRRSGEFDAXX · pith_short_16: YTRRSGEFDAXXWULB · pith_short_8: YTRRSGEF

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/YTRRSGEFDAXXWULBNQF3BHZQGU \
  | 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: c4e3191885182f7b51616c0bb09f30350218495764de6d5b135fc25257b20d95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad61d88928f518f504cc2f53d1a510d5257e322abd0de29d8a30e3ec29305636",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-03-28T17:12:05Z",
    "title_canon_sha256": "3757e0c232f0719b5f4fee3a87faf63273c3cb0fefdae8fa29fca990a4fcfe6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5421",
    "kind": "arxiv",
    "version": 1
  }
}