Pith Number

pith:T52KKACA

pith:2021:T52KKACASMGNJD7RNDSCBMDBTU

not attested not anchored not stored refs pending

Explaining Face Presentation Attack Detection Using Natural Language

Hengameh Mirzaalian, Jonathan May, Leonidas Spinoulas, Mohamed E. Hussein, Wael Abd-Almageed

arxiv:2111.04862 v1 · 2021-11-08 · cs.CV · cs.AI · cs.CL · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T52KKACASMGNJD7RNDSCBMDBTU}

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	2026-07-05T03:30:42.911710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f74a50040930cd48ff168e420b0619d066ce4796cd9e65a044f404f5097f028

Aliases

arxiv: 2111.04862 · arxiv_version: 2111.04862v1 · doi: 10.48550/arxiv.2111.04862 · pith_short_12: T52KKACASMGN · pith_short_16: T52KKACASMGNJD7R · pith_short_8: T52KKACA

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/T52KKACASMGNJD7RNDSCBMDBTU \
  | 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: 9f74a50040930cd48ff168e420b0619d066ce4796cd9e65a044f404f5097f028

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa89c6acfb96268905d0c3602925a9f8856897aed1691bf5481ccb17e64f68d0",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL",
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-11-08T22:55:55Z",
    "title_canon_sha256": "5123f9d4dfb86b1e048b5550d57f7f38fafff5bc76703bc628de6cd5ec2bc2ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.04862",
    "kind": "arxiv",
    "version": 1
  }
}