Pith Number

pith:5XU3JJG5

pith:2009:5XU3JJG5WZOLCQMLQXF7DAPG2Y

not attested not anchored not stored refs pending

Computation Tree Logic with Deadlock Detection

Bas Luttik, Nikola Trcka, Rob van Glabbeek

arxiv:0912.2109 v2 · 2009-12-10 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5XU3JJG5WZOLCQMLQXF7DAPG2Y}

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	2026-05-18T01:37:40.217427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ede9b4a4ddb65cb1418b85cbf181e6d62d5fdff2fe51b9ad163cfa8660bcf670

Aliases

arxiv: 0912.2109 · arxiv_version: 0912.2109v2 · doi: 10.48550/arxiv.0912.2109 · pith_short_12: 5XU3JJG5WZOL · pith_short_16: 5XU3JJG5WZOLCQML · pith_short_8: 5XU3JJG5

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/5XU3JJG5WZOLCQMLQXF7DAPG2Y \
  | 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: ede9b4a4ddb65cb1418b85cbf181e6d62d5fdff2fe51b9ad163cfa8660bcf670

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfbd3c0231f722131f4aaf788f48115fd751fbe77a66ca82855641aa1c993b05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-12-10T21:20:20Z",
    "title_canon_sha256": "f55b855ddea32cc9d02b9bbb08dffd4121c38352cbd7e542ba3aeb059a512627"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2109",
    "kind": "arxiv",
    "version": 2
  }
}