Pith Number

pith:QVVFN2U2

pith:2020:QVVFN2U2WP6FLQDYIP3KE6LNMQ

not attested not anchored not stored refs pending

XCSP3-core: A Format for Representing Constraint Satisfaction/Optimization Problems

C\'edric Piette, Christophe Lecoutre, Fr\'ed\'eric Boussemart, Gilles Audemard

arxiv:2009.00514 v4 · 2020-09-01 · 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{QVVFN2U2WP6FLQDYIP3KE6LNMQ}

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

PyCSP3-Scheduling: A Scheduling Extension for PyCSP3

Receipt and verification

First computed	2026-07-05T09:00:33.828911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

856a56ea9ab3fc55c07843f6a2796d6407109a448a699979db52556f5e36fe57

Aliases

arxiv: 2009.00514 · arxiv_version: 2009.00514v4 · doi: 10.48550/arxiv.2009.00514 · pith_short_12: QVVFN2U2WP6F · pith_short_16: QVVFN2U2WP6FLQDY · pith_short_8: QVVFN2U2

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/QVVFN2U2WP6FLQDYIP3KE6LNMQ \
  | 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: 856a56ea9ab3fc55c07843f6a2796d6407109a448a699979db52556f5e36fe57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c59346724a8bf0757a08c06f15b7524002d7c561f11768c09ba7f5d87b415ea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2020-09-01T15:24:49Z",
    "title_canon_sha256": "49a119bf9a0cb32a5f64fabadebaa868a5f1575728bbfd2a4a96099f4e17c707"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.00514",
    "kind": "arxiv",
    "version": 4
  }
}