Pith Number

pith:LUDD2BOO

pith:2020:LUDD2BOOL7UGNJYUGDAUAEQFLP

not attested not anchored not stored refs pending

Fingerprint Presentation Attack Detection: A Sensor and Material Agnostic Approach

Anil K. Jain, Steven A. Grosz, Tarang Chugh

arxiv:2004.02941 v1 · 2020-04-06 · 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{LUDD2BOOL7UGNJYUGDAUAEQFLP}

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	2026-07-05T00:53:21.732171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d063d05ce5fe866a71430c14012055bc64a2a224054b5edc63d0df228d3b3a4

Aliases

arxiv: 2004.02941 · arxiv_version: 2004.02941v1 · doi: 10.48550/arxiv.2004.02941 · pith_short_12: LUDD2BOOL7UG · pith_short_16: LUDD2BOOL7UGNJYU · pith_short_8: LUDD2BOO

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/LUDD2BOOL7UGNJYUGDAUAEQFLP \
  | 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: 5d063d05ce5fe866a71430c14012055bc64a2a224054b5edc63d0df228d3b3a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62bbb0afb07d88b64ff67b227d3d43d3a37ed9aea0b7b4a4606768d32f883acb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-04-06T19:03:05Z",
    "title_canon_sha256": "3eeb602727a748526014c180fa2ac16ed26381296906a590e201b3979aad5beb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.02941",
    "kind": "arxiv",
    "version": 1
  }
}