Pith Number

pith:DN6YLLZY

pith:2015:DN6YLLZYTMAA7E4GNUJBSHB25O

not attested not anchored not stored refs pending

Heart Rate Tracking using Wrist-Type Photoplethysmographic (PPG) Signals during Physical Exercise with Simultaneous Accelerometry

Ehsan Asadi, Farrokh Marvasti, Mahdi Boloursaz Mashhadi, Mohsen Eskandari, Shahrzad Kiani

arxiv:1504.04785 v2 · 2015-04-19 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DN6YLLZYTMAA7E4GNUJBSHB25O}

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	2026-05-18T01:04:50.609337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b7d85af389b000f93866d12191c3aeb9255ebb7b686a2d6821b4c0fc831734f

Aliases

arxiv: 1504.04785 · arxiv_version: 1504.04785v2 · doi: 10.48550/arxiv.1504.04785 · pith_short_12: DN6YLLZYTMAA · pith_short_16: DN6YLLZYTMAA7E4G · pith_short_8: DN6YLLZY

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/DN6YLLZYTMAA7E4GNUJBSHB25O \
  | 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: 1b7d85af389b000f93866d12191c3aeb9255ebb7b686a2d6821b4c0fc831734f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69a9926c3d27b9af02cf7661047bf77864ec606164bfe06790fe80f991177ced",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-19T03:29:15Z",
    "title_canon_sha256": "00cad6aa51f160f6c135abd47a1325fc19e39c5521b1aed732a0c3096106c492"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04785",
    "kind": "arxiv",
    "version": 2
  }
}