Pith Number

pith:GWFBQTL5

pith:2015:GWFBQTL5LVC3TAMLJG4CMT6YBL

not attested not anchored not stored refs pending

The solution to an open problem for a caching game

Endre Cs\'oka, Thomas Lidbetter

arxiv:1507.08425 v3 · 2015-07-30 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GWFBQTL5LVC3TAMLJG4CMT6YBL}

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	2026-05-18T01:25:11.523265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

358a184d7d5d45b9818b49b8264fd80ac82677673b902cf1afa1fd6a32efdfbc

Aliases

arxiv: 1507.08425 · arxiv_version: 1507.08425v3 · doi: 10.48550/arxiv.1507.08425 · pith_short_12: GWFBQTL5LVC3 · pith_short_16: GWFBQTL5LVC3TAML · pith_short_8: GWFBQTL5

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/GWFBQTL5LVC3TAMLJG4CMT6YBL \
  | 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: 358a184d7d5d45b9818b49b8264fd80ac82677673b902cf1afa1fd6a32efdfbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14a6e6316a45f4fd80e814c143ba060b30f8e1eaeb4fa9ea47cf0775ceaf9f9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-07-30T09:07:33Z",
    "title_canon_sha256": "2414edb2a4f7152737c1563180132df837d0477ac244da7903803efbba2bf2c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08425",
    "kind": "arxiv",
    "version": 3
  }
}