Pith Number

pith:YQYOA5W2

pith:2019:YQYOA5W223SGWIUXJ3UTW2AMPK

not attested not anchored not stored refs pending

Enabling Smartphone-based Estimation of Heart Rate

John Lach, Laura E. Barnes, Mehdi Boukhechba, Natalie Kramer, Nutta Homdee, Yixue W. Feng

arxiv:1912.08910 v1 · 2019-12-18 · cs.LG · cs.HC · eess.SP · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQYOA5W223SGWIUXJ3UTW2AMPK}

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	2026-07-05T00:27:21.598495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c430e076dad6e46b22974ee93b680c7aba25731ea82f23249d3b88d767982c39

Aliases

arxiv: 1912.08910 · arxiv_version: 1912.08910v1 · doi: 10.48550/arxiv.1912.08910 · pith_short_12: YQYOA5W223SG · pith_short_16: YQYOA5W223SGWIUX · pith_short_8: YQYOA5W2

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/YQYOA5W223SGWIUXJ3UTW2AMPK \
  | 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: c430e076dad6e46b22974ee93b680c7aba25731ea82f23249d3b88d767982c39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55258dd9ed90155ad36de699cebad342f0040de40ed1ce4973eeea64e6782177",
    "cross_cats_sorted": [
      "cs.HC",
      "eess.SP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-12-18T22:00:19Z",
    "title_canon_sha256": "007a43f740ac177b6d3a6e59223dd3ada01cfc2ca9a142b93077d43cb3b9523c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.08910",
    "kind": "arxiv",
    "version": 1
  }
}