Pith Number

pith:DGPAMGAT

pith:2015:DGPAMGATLPKD4JIYULFSRQR6B3

not attested not anchored not stored refs pending

Non-contact transmittance photoplethysmographic imaging (PPGI) for long-distance cardiovascular monitoring

Alexander Wong, Bill S. Lin, Christian Scharfenberger, David A. Clausi, Farnoud Kazemzadeh, Kaylen J. Pfisterer, Robert Amelard

arxiv:1503.06775 v1 · 2015-03-23 · physics.optics · 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{DGPAMGATLPKD4JIYULFSRQR6B3}

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	2026-05-18T02:20:37.471616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

199e0618135bd43e2518a2cb28c23e0ef80f8280e0687d978d12a18d3c9b0ca2

Aliases

arxiv: 1503.06775 · arxiv_version: 1503.06775v1 · doi: 10.48550/arxiv.1503.06775 · pith_short_12: DGPAMGATLPKD · pith_short_16: DGPAMGATLPKD4JIY · pith_short_8: DGPAMGAT

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/DGPAMGATLPKD4JIYULFSRQR6B3 \
  | 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: 199e0618135bd43e2518a2cb28c23e0ef80f8280e0687d978d12a18d3c9b0ca2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2de8c5279052ddfc8bce6385edef2be6bc2f30d888207c84a6b8e22272dd309d",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-03-23T19:19:40Z",
    "title_canon_sha256": "bf8d0ef0a0198a0074ad356c199a7f1b79754e247f90d4f04a2446812f9f6be5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06775",
    "kind": "arxiv",
    "version": 1
  }
}