Pith Number

pith:UN4JQYOO

pith:2013:UN4JQYOOEUZZWFDUNUU2NCGABP

not attested not anchored not stored refs pending

ChESS - Quick and Robust Detection of Chess-board Features

Joan Lasenby, Stuart Bennett

arxiv:1301.5491 v1 · 2013-01-23 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UN4JQYOOEUZZWFDUNUU2NCGABP}

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	2026-05-18T03:35:39.610605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3789861ce25339b14746d29a688c00bc8f2a0c20b029099215dbe3b3c447dc2

Aliases

arxiv: 1301.5491 · arxiv_version: 1301.5491v1 · doi: 10.48550/arxiv.1301.5491 · pith_short_12: UN4JQYOOEUZZ · pith_short_16: UN4JQYOOEUZZWFDU · pith_short_8: UN4JQYOO

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/UN4JQYOOEUZZWFDUNUU2NCGABP \
  | 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: a3789861ce25339b14746d29a688c00bc8f2a0c20b029099215dbe3b3c447dc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd384811b6d56e90097f05e649e7559b23c4bb94efb27738cf4377e75a8b70e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-01-23T13:10:21Z",
    "title_canon_sha256": "fccbde0cf4786006fb2181d1847087411b6d0750f6fabfcecce61b98039ae5d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5491",
    "kind": "arxiv",
    "version": 1
  }
}