Pith Number

pith:7QXAF7CJ

pith:2012:7QXAF7CJ3D7V5Z76PAT64R46RN

not attested not anchored not stored refs pending

Rapid Feature Extraction for Optical Character Recognition

Hong Yan, M. Ashraful Amin, M. Zahid Hossain

arxiv:1206.0238 v1 · 2012-06-01 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QXAF7CJ3D7V5Z76PAT64R46RN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:54:26.733798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc2e02fc49d8ff5ee7fe7827ee479e8b76a09a603a0fbc7c35fb1972b726727f

Aliases

arxiv: 1206.0238 · arxiv_version: 1206.0238v1 · doi: 10.48550/arxiv.1206.0238 · pith_short_12: 7QXAF7CJ3D7V · pith_short_16: 7QXAF7CJ3D7V5Z76 · pith_short_8: 7QXAF7CJ

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/7QXAF7CJ3D7V5Z76PAT64R46RN \
  | 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: fc2e02fc49d8ff5ee7fe7827ee479e8b76a09a603a0fbc7c35fb1972b726727f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db41a342905cafd2a0e49cd090c50eea973079111943bc1ee0cbfdfbee3717e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-06-01T16:20:41Z",
    "title_canon_sha256": "6d0b9b97f54e49f45ec52a378273f6ec660a65932079b1686e39d8d53dd61155"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.0238",
    "kind": "arxiv",
    "version": 1
  }
}