Pith Number

pith:P6QWQRRZ

pith:2022:P6QWQRRZWGJHHLTLF4NVHBTNQ6

not attested not anchored not stored refs pending

The Struggles of Chessland

Aidan Gao, Angela Zhao, Corey Zhao, Daniel Sheffield, Irene Choi, Michael Yang, Rajarshi Mandal, Shreyas Ekanathan, Sylvia Zia Lee, Tanya Khovanova, Vaibhav Rastogi

arxiv:2212.01468 v1 · 2022-12-02 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6QWQRRZWGJHHLTLF4NVHBTNQ6}

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	2026-07-05T05:21:55.431334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fa1684639b19273ae6b2f1b53866d87ba1c1f6e610fa5770cd84cdf3219daa8

Aliases

arxiv: 2212.01468 · arxiv_version: 2212.01468v1 · doi: 10.48550/arxiv.2212.01468 · pith_short_12: P6QWQRRZWGJH · pith_short_16: P6QWQRRZWGJHHLTL · pith_short_8: P6QWQRRZ

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/P6QWQRRZWGJHHLTLF4NVHBTNQ6 \
  | 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: 7fa1684639b19273ae6b2f1b53866d87ba1c1f6e610fa5770cd84cdf3219daa8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d661e4520f275bc60beb6166350167b8e93fb21c7c0dfd08792165c8e75ef4c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2022-12-02T22:14:48Z",
    "title_canon_sha256": "93055eeae495f407f2bec4c5e0d51871a896ac1d85495364661a2da9d8af1d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.01468",
    "kind": "arxiv",
    "version": 1
  }
}