Pith Number

pith:55YKYY4W

pith:2013:55YKYY4W3OBZWK375L66R7FXW5

not attested not anchored not stored refs pending

Solving WCSP by Extraction of Minimal Unsatisfiable Cores

Christophe Lecoutre, Nicolas Paris, Olivier Roussel, S\'ebastien Tabary

arxiv:1304.5449 v1 · 2013-04-19 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55YKYY4W3OBZWK375L66R7FXW5}

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	2026-05-18T03:27:33.482149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef70ac6396db839b2b7feafde8fcb7b7560d35cb3f3c116d7242d7b3f669611f

Aliases

arxiv: 1304.5449 · arxiv_version: 1304.5449v1 · doi: 10.48550/arxiv.1304.5449 · pith_short_12: 55YKYY4W3OBZ · pith_short_16: 55YKYY4W3OBZWK37 · pith_short_8: 55YKYY4W

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/55YKYY4W3OBZWK375L66R7FXW5 \
  | 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: ef70ac6396db839b2b7feafde8fcb7b7560d35cb3f3c116d7242d7b3f669611f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77d33c81e95555fe192bf8807449a2f0df271b28574d99d364dae71a366ae0ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2013-04-19T15:36:53Z",
    "title_canon_sha256": "e3980f284dca659c3c322aa8b2fc50d63e45e10dcb98e44b81dc37675a2a2374"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5449",
    "kind": "arxiv",
    "version": 1
  }
}