Pith Number

pith:QP4K6ZXY

pith:2002:QP4K6ZXY7EUWRXDOHUSELMGRTR

not attested not anchored not stored refs pending

Declarative program development in Prolog with GUPU

Stefan Kral, Ulrich Neumerkel

arxiv:cs/0207044 v3 · 2002-07-11 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QP4K6ZXY7EUWRXDOHUSELMGRTR}

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.

Cited by

1 paper in Pith

Grounded Language Design for Lightweight Diagramming for Formal Methods

Receipt and verification

First computed	2026-07-04T14:24:19.441823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83f8af66f8f92968dc6e3d2445b0d19c58e06182e6cd1ee6dd92ce475405aeb0

Aliases

arxiv: cs/0207044 · arxiv_version: cs/0207044v3 · doi: 10.48550/arxiv.cs/0207044 · pith_short_12: QP4K6ZXY7EUW · pith_short_16: QP4K6ZXY7EUWRXDO · pith_short_8: QP4K6ZXY

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/QP4K6ZXY7EUWRXDOHUSELMGRTR \
  | 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: 83f8af66f8f92968dc6e3d2445b0d19c58e06182e6cd1ee6dd92ce475405aeb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5574ea6e320e0e55bc8232eecfd56f5ef879703cca3118befab5fd31b1b0b93d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.SE",
    "submitted_at": "2002-07-11T16:57:59Z",
    "title_canon_sha256": "308472b6da53d0670614eb04b71732d2fd37e0487462552e82b15fb684dace05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0207044",
    "kind": "arxiv",
    "version": 3
  }
}