Pith Number

pith:Y5ZPA7VO

pith:2018:Y5ZPA7VOH5VUXIKLGHGTGPRVM5

not attested not anchored not stored refs pending

Image Pre-processing Using OpenCV Library on MORPH-II Face Database

Benjamin Yip, Cuixian Chen, Rachel Towner, Troy Kling, Yishi Wang

arxiv:1811.06934 v1 · 2018-11-16 · 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{Y5ZPA7VOH5VUXIKLGHGTGPRVM5}

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	2026-05-18T00:00:33.411219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c772f07eae3f6b4ba14b31cd333e35677af763db6ef803ce86ce8f460bf09d40

Aliases

arxiv: 1811.06934 · arxiv_version: 1811.06934v1 · doi: 10.48550/arxiv.1811.06934 · pith_short_12: Y5ZPA7VOH5VU · pith_short_16: Y5ZPA7VOH5VUXIKL · pith_short_8: Y5ZPA7VO

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/Y5ZPA7VOH5VUXIKLGHGTGPRVM5 \
  | 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: c772f07eae3f6b4ba14b31cd333e35677af763db6ef803ce86ce8f460bf09d40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "607d51f93bcdf9e48bf63065fb3560b94c9733c7be1deabcd44f7353780faa39",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-11-16T17:36:33Z",
    "title_canon_sha256": "4ff91b64f20f3d87ef3b46e6bc23a7417b66b67be59f425c2b6e401901b9803c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06934",
    "kind": "arxiv",
    "version": 1
  }
}