Pith Number

pith:2EYEAZYL

pith:2012:2EYEAZYLD75TFXD2SCLDY6M5DI

not attested not anchored not stored refs pending

Optimizing Face Recognition Using PCA

Majda Wazzan, Manal Abdullah, Sahar Bo-saeed

arxiv:1206.1515 v1 · 2012-06-07 · 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{2EYEAZYLD75TFXD2SCLDY6M5DI}

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	2026-05-18T03:52:41.172557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d13040670b1ffb32dc7a90963c799d1a1c68d6aac4ee8bebb4b10fb86d44b38b

Aliases

arxiv: 1206.1515 · arxiv_version: 1206.1515v1 · doi: 10.48550/arxiv.1206.1515 · pith_short_12: 2EYEAZYLD75T · pith_short_16: 2EYEAZYLD75TFXD2 · pith_short_8: 2EYEAZYL

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/2EYEAZYLD75TFXD2SCLDY6M5DI \
  | 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: d13040670b1ffb32dc7a90963c799d1a1c68d6aac4ee8bebb4b10fb86d44b38b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69936566f848495778b1e2cb600bb92cba854a9d8cf71fc39f92e160d46c5cf4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-06-07T14:51:54Z",
    "title_canon_sha256": "b880811716a263da56710c2cb634b85720b27ad314e39e75481b7463ff169b47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1515",
    "kind": "arxiv",
    "version": 1
  }
}