Pith Number

pith:T3B4Q5LJ

pith:2018:T3B4Q5LJGTGMBLJBDA4KC3XZVS

not attested not anchored not stored refs pending

Solving Sudoku with Ant Colony Optimisation

Huw Lloyd, Martyn Amos

arxiv:1805.03545 v1 · 2018-05-09 · 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{T3B4Q5LJGTGMBLJBDA4KC3XZVS}

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	2026-05-18T00:16:19.914801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ec3c8756934ccc0ad211838a16ef9aca177b71c12729271d957262f2c74a654

Aliases

arxiv: 1805.03545 · arxiv_version: 1805.03545v1 · doi: 10.48550/arxiv.1805.03545 · pith_short_12: T3B4Q5LJGTGM · pith_short_16: T3B4Q5LJGTGMBLJB · pith_short_8: T3B4Q5LJ

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/T3B4Q5LJGTGMBLJBDA4KC3XZVS \
  | 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: 9ec3c8756934ccc0ad211838a16ef9aca177b71c12729271d957262f2c74a654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c5cf3280f7f1b2e5769be8797f27fb19649d8d8fc0dde0ac2fc519d637ac29e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-05-09T14:14:08Z",
    "title_canon_sha256": "8388d9678d6f1a532b3472067f42190a2e5622f2b7f46d9f2c4c2c1ea5dfcef5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03545",
    "kind": "arxiv",
    "version": 1
  }
}