Pith Number

pith:BMRQIGCR

pith:2020:BMRQIGCRFM6PUHCNJRXJJIWKCC

not attested not anchored not stored refs pending

PyCSP3: Modeling Combinatorial Constrained Problems in Python

Christophe Lecoutre, Nicolas Szczepanski

arxiv:2009.00326 v6 · 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{BMRQIGCRFM6PUHCNJRXJJIWKCC}

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

3 papers in Pith

PyCSP3-Scheduling: A Scheduling Extension for PyCSP3

Formalize, Don't Optimize: The Heuristic Trap in LLM-Generated Combinatorial Solvers

MathConstraint: Automated Generation of Verified Combinatorial Reasoning Instances for LLMs

Receipt and verification

First computed	2026-07-05T09:00:33.800032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b230418512b3cfa1c4d4c6e94a2ca10b8486b1184a3deac1ae53c731008cdbd

Aliases

arxiv: 2009.00326 · arxiv_version: 2009.00326v6 · doi: 10.48550/arxiv.2009.00326 · pith_short_12: BMRQIGCRFM6P · pith_short_16: BMRQIGCRFM6PUHCN · pith_short_8: BMRQIGCR

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/BMRQIGCRFM6PUHCNJRXJJIWKCC \
  | 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: 0b230418512b3cfa1c4d4c6e94a2ca10b8486b1184a3deac1ae53c731008cdbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7f6700d3b8f7b57520b16f737a8eb6e2b4c44abd31fcf36e1b688712bd1ecb1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2020-09-01T10:11:31Z",
    "title_canon_sha256": "af993ad737c8d446a9c2345861d0bd5d4af8304d749a7721f41310c5ab8c0d15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.00326",
    "kind": "arxiv",
    "version": 6
  }
}