Pith Number

pith:TNKC26QL

pith:2002:TNKC26QLTR6R256TLISOPYULUZ

not attested not anchored not stored refs pending

Forbidden Information

Leonid A. Levin

arxiv:cs/0203029 v21 · 2002-03-27 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TNKC26QLTR6R256TLISOPYULUZ}

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	2026-05-17T23:58:09.010886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b542d7a0b9c7d1d77d35a24e7e28ba65c94965687b5eccc4a50540738be00a1

Aliases

arxiv: cs/0203029 · arxiv_version: cs/0203029v21 · doi: 10.48550/arxiv.cs/0203029 · pith_short_12: TNKC26QLTR6R · pith_short_16: TNKC26QLTR6R256T · pith_short_8: TNKC26QL

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/TNKC26QLTR6R256TLISOPYULUZ \
  | 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: 9b542d7a0b9c7d1d77d35a24e7e28ba65c94965687b5eccc4a50540738be00a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6aa3526410520afd476f6855ca6acb171d5bbb5ba2a75b9a9fcc657d1854bc6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2002-03-27T17:28:22Z",
    "title_canon_sha256": "0417f1fe38b929b80ca87bbfae6386aa631a06cae9a95bf1899b26a7981a8b16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0203029",
    "kind": "arxiv",
    "version": 21
  }
}