Pith Number

pith:2BP5QNLN

pith:2013:2BP5QNLNMPQ7J3U2YLSVO3XLOC

not attested not anchored not stored refs pending

A maximal-information color to gray conversion method for document images: Toward an optimal grayscale representation for document image binarization

Mohamed Cheriet, Rachid Hedjam, Reza Farrahi Moghaddam, Shaohua Chen

arxiv:1306.6058 v2 · 2013-06-25 · 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{2BP5QNLNMPQ7J3U2YLSVO3XLOC}

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	2026-05-18T03:19:56.114496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d05fd8356d63e1f4ee9ac2e5576eeb7089109823744eee8792599b18a674c709

Aliases

arxiv: 1306.6058 · arxiv_version: 1306.6058v2 · doi: 10.48550/arxiv.1306.6058 · pith_short_12: 2BP5QNLNMPQ7 · pith_short_16: 2BP5QNLNMPQ7J3U2 · pith_short_8: 2BP5QNLN

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/2BP5QNLNMPQ7J3U2YLSVO3XLOC \
  | 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: d05fd8356d63e1f4ee9ac2e5576eeb7089109823744eee8792599b18a674c709

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24e342d75544eb8b1a815858239d1ec1697b80bb05f4cce6d7776e88783eb01b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-06-25T18:41:04Z",
    "title_canon_sha256": "96fc576426b65eb7a5206045c5e1072d044bd643710a110cc507681f2202cdc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.6058",
    "kind": "arxiv",
    "version": 2
  }
}