Pith Number

pith:4XODYRZC

pith:2025:4XODYRZCERXJ5NDTP6YXKHFDIO

not attested not anchored not stored refs pending

Strongly Solving $7 \times 6$ Connect-Four on Consumer Grade Hardware

Markus B\"ock

arxiv:2507.05267 v1 · 2025-07-01 · 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{4XODYRZCERXJ5NDTP6YXKHFDIO}

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	2026-07-05T11:33:27.318699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5dc3c4722246e9eb4737fb1751ca34392a2bd4234e4907e318273a216b088b8

Aliases

arxiv: 2507.05267 · arxiv_version: 2507.05267v1 · doi: 10.48550/arxiv.2507.05267 · pith_short_12: 4XODYRZCERXJ · pith_short_16: 4XODYRZCERXJ5NDT · pith_short_8: 4XODYRZC

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/4XODYRZCERXJ5NDTP6YXKHFDIO \
  | 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: e5dc3c4722246e9eb4737fb1751ca34392a2bd4234e4907e318273a216b088b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21f4d177d7eae77a09e45eafcc0dedc122c6d5b08a488ac1942d1e0f7e1ffc2c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-07-01T09:33:24Z",
    "title_canon_sha256": "c4c1f767cafe6e6d7958ddcf8e7721146c3ff158ab3808e31ba96aefcac13f14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.05267",
    "kind": "arxiv",
    "version": 1
  }
}