Pith Number

pith:GTCWVAGM

pith:2013:GTCWVAGMG5UXY4ZTREVCMEY2LM

not attested not anchored not stored refs pending

Image Set based Collaborative Representation for Face Recognition

David Zhang, Lei Zhang, Pengfei Zhu, Simon C.K. Shiu, Wangmeng Zuo

arxiv:1308.6687 v1 · 2013-08-30 · 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{GTCWVAGMG5UXY4ZTREVCMEY2LM}

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	2026-07-05T00:45:48.492275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34c56a80cc37697c7333892a26131a5b24dc52b493a4db0825dc0f01f7c47d6b

Aliases

arxiv: 1308.6687 · arxiv_version: 1308.6687v1 · doi: 10.48550/arxiv.1308.6687 · pith_short_12: GTCWVAGMG5UX · pith_short_16: GTCWVAGMG5UXY4ZT · pith_short_8: GTCWVAGM

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/GTCWVAGMG5UXY4ZTREVCMEY2LM \
  | 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: 34c56a80cc37697c7333892a26131a5b24dc52b493a4db0825dc0f01f7c47d6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "696e5e2081071097616639f6bd0aead1cda4bdc0cc4f22ff03645c5659d8b4b5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-08-30T09:08:56Z",
    "title_canon_sha256": "fd6d7162b2962d2174888322b535bfd528f2c95af8dfdf7d531c1fa76a43716e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6687",
    "kind": "arxiv",
    "version": 1
  }
}