Pith Number

pith:TH5UJCOZ

pith:2017:TH5UJCOZ3ULL5UECZNXT5CWHX3

not attested not anchored not stored refs pending

How far did we get in face spoofing detection?

Jo\~ao Papa, Luciano Oliveira, Luiz Souza, Mauricio Pamplona

arxiv:1710.09868 v2 · 2017-10-26 · 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{TH5UJCOZ3ULL5UECZNXT5CWHX3}

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	2026-05-18T00:04:30.575451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99fb4489d9dd16bed082cb6f3e8ac7bee508084144f5135fc4ab806f1bb79440

Aliases

arxiv: 1710.09868 · arxiv_version: 1710.09868v2 · doi: 10.48550/arxiv.1710.09868 · pith_short_12: TH5UJCOZ3ULL · pith_short_16: TH5UJCOZ3ULL5UEC · pith_short_8: TH5UJCOZ

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/TH5UJCOZ3ULL5UECZNXT5CWHX3 \
  | 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: 99fb4489d9dd16bed082cb6f3e8ac7bee508084144f5135fc4ab806f1bb79440

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d8ffefafa72616325d91c58abebbd2e1c7366a3139f61183e5ac52f4d3d3813",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2017-10-26T18:49:01Z",
    "title_canon_sha256": "f1b6c135d5f6613659cdeeefdf301e42d12b17f8631a3565db483d00b6a9b105"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09868",
    "kind": "arxiv",
    "version": 2
  }
}