Pith Number

pith:WT3KWHMN

pith:2010:WT3KWHMNYDADIX2DKSWBVFNNE4

not attested not anchored not stored refs pending

Rotation Invariant Face Detection Using Wavelet, PCA and Radial Basis Function Networks

Firoz Ahmed Siddiqi, Md. Emdadul Haque, Md. Saiful Islam, Mohammad Shamsul Alam, S. M. Kamruzzaman

arxiv:1009.4974 v1 · 2010-09-25 · 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{WT3KWHMNYDADIX2DKSWBVFNNE4}

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	2026-05-18T04:40:19.628683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4f6ab1d8dc0c0345f4354ac1a95ad2735d13ca503887cf1abda188bbcd73d30

Aliases

arxiv: 1009.4974 · arxiv_version: 1009.4974v1 · doi: 10.48550/arxiv.1009.4974 · pith_short_12: WT3KWHMNYDAD · pith_short_16: WT3KWHMNYDADIX2D · pith_short_8: WT3KWHMN

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/WT3KWHMNYDADIX2DKSWBVFNNE4 \
  | 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: b4f6ab1d8dc0c0345f4354ac1a95ad2735d13ca503887cf1abda188bbcd73d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fad02d62e5df993269596aa77784a102c52cea0f37526959944ed97ac9ae35b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2010-09-25T05:46:31Z",
    "title_canon_sha256": "9abc6105f1875acf9d6eff4d517dec83e1a8fc68fcb752448cae692c3cbd41a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4974",
    "kind": "arxiv",
    "version": 1
  }
}