Pith Number

pith:643DFB5K

pith:2010:643DFB5KGUXTWVUKZM2PH7VSYK

not attested not anchored not stored refs pending

Optimizing Selective Search in Chess

Moshe Koppel, Nathan S. Netanyahu, Omid David-Tabibi

arxiv:1009.0550 v1 · 2010-09-02 · cs.AI · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{643DFB5KGUXTWVUKZM2PH7VSYK}

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	2026-05-18T04:41:25.903832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7363287aa352f3b568acb34f3feb2c295698f447b8cefb7156ff7ccb6a8bfbf

Aliases

arxiv: 1009.0550 · arxiv_version: 1009.0550v1 · doi: 10.48550/arxiv.1009.0550 · pith_short_12: 643DFB5KGUXT · pith_short_16: 643DFB5KGUXTWVUK · pith_short_8: 643DFB5K

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/643DFB5KGUXTWVUKZM2PH7VSYK \
  | 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: f7363287aa352f3b568acb34f3feb2c295698f447b8cefb7156ff7ccb6a8bfbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c67a4071e7313c0d219a41e09fe3cee25eeefe912dc11515b147d424d32f139b",
    "cross_cats_sorted": [
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2010-09-02T21:41:45Z",
    "title_canon_sha256": "01bc2020fddc1a08e034ef5edddf16637a0bf22d4337502c39ae875927e917fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0550",
    "kind": "arxiv",
    "version": 1
  }
}