Pith Number

pith:QLFE4RZQ

pith:2013:QLFE4RZQ47JS6YHW5OTEA65MQF

not attested not anchored not stored refs pending

CERES for First-Order Schemata

Alexander Leitsch, Cvetan Dunchev, Daniel Weller, Mikheil Rukhaia

arxiv:1303.4257 v1 · 2013-03-18 · 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{QLFE4RZQ47JS6YHW5OTEA65MQF}

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	2026-05-18T03:30:39.091882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82ca4e4730e7d32f60f6eba6407bac815f43c32cd125324851d533bad53805ed

Aliases

arxiv: 1303.4257 · arxiv_version: 1303.4257v1 · doi: 10.48550/arxiv.1303.4257 · pith_short_12: QLFE4RZQ47JS · pith_short_16: QLFE4RZQ47JS6YHW · pith_short_8: QLFE4RZQ

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/QLFE4RZQ47JS6YHW5OTEA65MQF \
  | 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: 82ca4e4730e7d32f60f6eba6407bac815f43c32cd125324851d533bad53805ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0e8781efaa0b3193f69859346d69270e6daf7aefca2e7270f5ce79851c055d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-03-18T14:07:02Z",
    "title_canon_sha256": "ff117af1c0e91115dbb8d4204239ac07c26482db609f57d55ea944c161df91e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4257",
    "kind": "arxiv",
    "version": 1
  }
}