Pith Number

pith:2HT4HADC

pith:2012:2HT4HADCTP2RKRZW3LZE7HAPSK

not attested not anchored not stored refs pending

The Chaos Within Sudoku

Maria Ercsey-Ravasz, Zoltan Toroczkai

arxiv:1208.0370 v1 · 2012-08-01 · nlin.CD · cs.DS · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HT4HADCTP2RKRZW3LZE7HAPSK}

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	2026-05-18T03:49:34.393575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1e7c380629bf5154736daf24f9c0f929163c007d7cce8fd4e4d60b0c15ce2a3

Aliases

arxiv: 1208.0370 · arxiv_version: 1208.0370v1 · doi: 10.48550/arxiv.1208.0370 · pith_short_12: 2HT4HADCTP2R · pith_short_16: 2HT4HADCTP2RKRZW · pith_short_8: 2HT4HADC

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/2HT4HADCTP2RKRZW3LZE7HAPSK \
  | 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: d1e7c380629bf5154736daf24f9c0f929163c007d7cce8fd4e4d60b0c15ce2a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09f881523f9d598656533ee6bcad342e46d7a1bc6d41c68a27003a92e605a8ae",
    "cross_cats_sorted": [
      "cs.DS",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2012-08-01T21:41:09Z",
    "title_canon_sha256": "5bf1ff5d320d9b0a1c8745b0650cf3b087ee70ca7d9a7406ec892e83e82825d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0370",
    "kind": "arxiv",
    "version": 1
  }
}