Pith Number

pith:HY5LDLU6

pith:2022:HY5LDLU6CKZNXZIQG36HMQEQA2

not attested not anchored not stored refs pending

Local Gradient Hexa Pattern: A Descriptor for Face Recognition and Retrieval

Pavan Chakraborty, Satish Kumar Singh, Soumendu Chakraborty

arxiv:2201.00509 v1 · 2022-01-03 · cs.CV · cs.MM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HY5LDLU6CKZNXZIQG36HMQEQA2}

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	2026-07-05T03:45:03.464899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e3ab1ae9e12b2dbe51036fc76409006803d493e0b6c8d5317c22ef165eb2729

Aliases

arxiv: 2201.00509 · arxiv_version: 2201.00509v1 · doi: 10.48550/arxiv.2201.00509 · pith_short_12: HY5LDLU6CKZN · pith_short_16: HY5LDLU6CKZNXZIQ · pith_short_8: HY5LDLU6

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/HY5LDLU6CKZNXZIQG36HMQEQA2 \
  | 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: 3e3ab1ae9e12b2dbe51036fc76409006803d493e0b6c8d5317c22ef165eb2729

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d49b99ed9dcef74f5d1d81e5138446f4e5ff562f92133aeaf093c79b8f049ee8",
    "cross_cats_sorted": [
      "cs.MM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-01-03T07:45:36Z",
    "title_canon_sha256": "5375a90305690853bf44a839276a95639d9c0a073ca0fd192a6f098bd779c650"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.00509",
    "kind": "arxiv",
    "version": 1
  }
}