Pith Number

pith:W7NHYNZO

pith:2017:W7NHYNZOZ66MKPTGAHVO2SW5N6

not attested not anchored not stored refs pending

Evaluation of PPG Biometrics for Authentication in different states

Dimitrios Hatzinakos, Sherif N Abbas, Umang Yadav

arxiv:1712.08583 v1 · 2017-12-22 · cs.CR · cs.CV · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7NHYNZOZ66MKPTGAHVO2SW5N6}

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	2026-05-18T00:27:23.041184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7da7c372ecfbcc53e6601eaed4add6fb5c9b6b83a43516e9054ae90b5f84c1a

Aliases

arxiv: 1712.08583 · arxiv_version: 1712.08583v1 · doi: 10.48550/arxiv.1712.08583 · pith_short_12: W7NHYNZOZ66M · pith_short_16: W7NHYNZOZ66MKPTG · pith_short_8: W7NHYNZO

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/W7NHYNZOZ66MKPTGAHVO2SW5N6 \
  | 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: b7da7c372ecfbcc53e6601eaed4add6fb5c9b6b83a43516e9054ae90b5f84c1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad6956325c65a8c44418cb608190d3f1b2f5d502d4a875299591c8e9628c2c1f",
    "cross_cats_sorted": [
      "cs.CV",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2017-12-22T17:29:31Z",
    "title_canon_sha256": "0718259d37faa37f2136a70629931cbc39361d50c6957e3c07f821a3ff76c7ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08583",
    "kind": "arxiv",
    "version": 1
  }
}