Pith Number

pith:QBDRGYGS

pith:2013:QBDRGYGSHVUQCB4LXY4RWXQM4D

not attested not anchored not stored refs pending

Face Verification Using Boosted Cross-Image Features

Dong Zhang, Mubarak Shah, Omar Oreifej

arxiv:1309.7434 v1 · 2013-09-28 · cs.CV

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

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	2026-05-18T03:11:58.708964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80471360d23d6901078bbe391b5e0ce0de27426cde69a805771d3716464b53a4

Aliases

arxiv: 1309.7434 · arxiv_version: 1309.7434v1 · doi: 10.48550/arxiv.1309.7434 · pith_short_12: QBDRGYGSHVUQ · pith_short_16: QBDRGYGSHVUQCB4L · pith_short_8: QBDRGYGS

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/QBDRGYGSHVUQCB4LXY4RWXQM4D \
  | 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: 80471360d23d6901078bbe391b5e0ce0de27426cde69a805771d3716464b53a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "080a8b970ff6641b7b5e9aa6430ab1dcf6feea3abbf80e8726d1c3e3a3b1da1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-09-28T06:21:18Z",
    "title_canon_sha256": "285efbf49f23489d5fdb331a824616ac7b149abe02e773b999ea4d3becc6b3fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7434",
    "kind": "arxiv",
    "version": 1
  }
}