Pith Number

pith:WTDQNCLT

pith:2011:WTDQNCLTSJUUEVRPPVGE5PXAVM

not attested not anchored not stored refs pending

Sets Have Simple Members

Leonid A. Levin, Samuel Epstein

arxiv:1107.1458 v9 · 2011-07-07 · 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{WTDQNCLTSJUUEVRPPVGE5PXAVM}

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	2026-05-18T02:56:04.164993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4c7068973926942562f7d4c4ebee0ab22711054eba1677b5606e2fcdcd117f0

Aliases

arxiv: 1107.1458 · arxiv_version: 1107.1458v9 · doi: 10.48550/arxiv.1107.1458 · pith_short_12: WTDQNCLTSJUU · pith_short_16: WTDQNCLTSJUUEVRP · pith_short_8: WTDQNCLT

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/WTDQNCLTSJUUEVRPPVGE5PXAVM \
  | 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: b4c7068973926942562f7d4c4ebee0ab22711054eba1677b5606e2fcdcd117f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b832049cfbe8ba4f73be4b2ceb67ac59f4bf5ac1cfb054d990658fcac433bd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-07-07T17:19:53Z",
    "title_canon_sha256": "1892642d9afcade7d292e65ff45d589183442007932ac2cdaa48ac966d64c15b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1458",
    "kind": "arxiv",
    "version": 9
  }
}