Pith Number

pith:WP66ISHN

pith:2026:WP66ISHNNFXDSI5RJR7S4VK65X

not attested not anchored not stored refs pending

Hat guessing with proper colorings

Anurag Bishnoi, Anurag Ramachandran, James Tuite, Lars van der Kuil, Michael Kreiger, Peter Bentley, Sam Adriaensen, Saptarshi Mandal

arxiv:2603.04909 v2 · 2026-03-05 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WP66ISHNNFXDSI5RJR7S4VK65X}

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	2026-06-09T02:08:40.549780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3fde448ed696e3923b14c7f2e555eedf2d90e0a6958106a0172fe429c081135

Aliases

arxiv: 2603.04909 · arxiv_version: 2603.04909v2 · doi: 10.48550/arxiv.2603.04909 · pith_short_12: WP66ISHNNFXD · pith_short_16: WP66ISHNNFXDSI5R · pith_short_8: WP66ISHN

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/WP66ISHNNFXDSI5RJR7S4VK65X \
  | 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: b3fde448ed696e3923b14c7f2e555eedf2d90e0a6958106a0172fe429c081135

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "547a7ff5f2e7a5bf2244c1f318cff0a20abfaab6999e3943fad5763e907884f1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-03-05T07:52:36Z",
    "title_canon_sha256": "7858581859eb340068e865613d2c99e3597f8b82dc079bd84c1730200b9da6c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.04909",
    "kind": "arxiv",
    "version": 2
  }
}