Pith Number

pith:F4DBF2FL

pith:2021:F4DBF2FLDWU7USPG7WRLR6GWET

not attested not anchored not stored refs pending

Determining Chess Game State From an Image

Georg W\"olflein, Ognjen Arandjelovi\'c

arxiv:2104.14963 v2 · 2021-04-30 · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F4DBF2FLDWU7USPG7WRLR6GWET}

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	2026-07-05T02:45:37.923400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f0612e8ab1da9fa49e6fda2b8f8d624fb0a6d5881362a4eaa69976b55da2c5f

Aliases

arxiv: 2104.14963 · arxiv_version: 2104.14963v2 · doi: 10.48550/arxiv.2104.14963 · pith_short_12: F4DBF2FLDWU7 · pith_short_16: F4DBF2FLDWU7USPG · pith_short_8: F4DBF2FL

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/F4DBF2FLDWU7USPG7WRLR6GWET \
  | 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: 2f0612e8ab1da9fa49e6fda2b8f8d624fb0a6d5881362a4eaa69976b55da2c5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8956b27091a3a440635b43a87565f21c8df98ba9275e3360d7f3362e0afd7109",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-04-30T13:02:13Z",
    "title_canon_sha256": "2ca41880e9fd752a0d277d1fd7603a167866a34d1312bb69703a1d768315a34b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.14963",
    "kind": "arxiv",
    "version": 2
  }
}