Pith Number

pith:HXY4DZRN

pith:2011:HXY4DZRNZKOQIECTAX3AC2C3SD

not attested not anchored not stored refs pending

A New Variation of Hat Guessing Games

Huacheng Yu, Tengyu Ma, Xiaoming Sun

arxiv:1101.0869 v2 · 2011-01-05 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HXY4DZRNZKOQIECTAX3AC2C3SD}

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	2026-05-18T04:31:22.013672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3df1c1e62dca9d04105305f601685b90cc30ad7de3cfe8b9823d1e96ffe4fb4d

Aliases

arxiv: 1101.0869 · arxiv_version: 1101.0869v2 · doi: 10.48550/arxiv.1101.0869 · pith_short_12: HXY4DZRNZKOQ · pith_short_16: HXY4DZRNZKOQIECT · pith_short_8: HXY4DZRN

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/HXY4DZRNZKOQIECTAX3AC2C3SD \
  | 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: 3df1c1e62dca9d04105305f601685b90cc30ad7de3cfe8b9823d1e96ffe4fb4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "533ade7dbc4c45eb3912fcbb312963f16720400b534a079f01fa2b6df0cb683b",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-01-05T02:13:50Z",
    "title_canon_sha256": "d72bc8d26a076a38066dd01b4cb99c5bbe3440dea9a6a8c22571afb1a6d272da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.0869",
    "kind": "arxiv",
    "version": 2
  }
}