Pith Number

pith:BCWXBQV3

pith:2019:BCWXBQV3SAYNMYY3VK2ODCXCFY

not attested not anchored not stored refs pending

Degraded Historical Documents Images Binarization Using a Combination of Enhanced Techniques

Dominique Michelucci, Omar Boudraa, Walid Khaled Hidouci

arxiv:1901.09425 v1 · 2019-01-27 · 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{BCWXBQV3SAYNMYY3VK2ODCXCFY}

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	2026-05-17T23:55:24.811346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08ad70c2bb9030d6631baab4e18ae22e3ade988a07e35aba99cb49881a0ef598

Aliases

arxiv: 1901.09425 · arxiv_version: 1901.09425v1 · doi: 10.48550/arxiv.1901.09425 · pith_short_12: BCWXBQV3SAYN · pith_short_16: BCWXBQV3SAYNMYY3 · pith_short_8: BCWXBQV3

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/BCWXBQV3SAYNMYY3VK2ODCXCFY \
  | 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: 08ad70c2bb9030d6631baab4e18ae22e3ade988a07e35aba99cb49881a0ef598

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38fd496f237a86494a77d22fc352af8d4d999a928a0003c112dded9a455af608",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-01-27T19:37:52Z",
    "title_canon_sha256": "2769344e3c3b57a9f0f68769823df57998ca0738e7f395973fda65bc61b3fd87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09425",
    "kind": "arxiv",
    "version": 1
  }
}