Pith Number

pith:J2LDWXFY

pith:2019:J2LDWXFYB3VSYRQTNPCWJTTOLN

not attested not anchored not stored refs pending

Improving Heart Rate Estimation on Consumer Grade Wrist-Worn Device Using Post-Calibration Approach

Apiwat Ditthapron, Maytus Piriyajitakonkij, Pitshaporn Leelaarporn, Puntawat Ponglertnapakorn, Tanut Choksatchawathi, Thayakorn Wisutthisen, Theerawit Wilaiprasitporn

arxiv:1910.07881 v5 · 2019-10-14 · 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{J2LDWXFYB3VSYRQTNPCWJTTOLN}

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	2026-07-05T00:46:50.824560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e963b5cb80eeb2c46136bc564ce6e5b4d7e04a6a37153e26292f80d5bf75dd1

Aliases

arxiv: 1910.07881 · arxiv_version: 1910.07881v5 · doi: 10.48550/arxiv.1910.07881 · pith_short_12: J2LDWXFYB3VS · pith_short_16: J2LDWXFYB3VSYRQT · pith_short_8: J2LDWXFY

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/J2LDWXFYB3VSYRQTNPCWJTTOLN \
  | 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: 4e963b5cb80eeb2c46136bc564ce6e5b4d7e04a6a37153e26292f80d5bf75dd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16b3a1a874f289417ebd288aeb02e80ef7864477c7d2d555e1c4249c1c7dbf0d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-10-14T17:24:02Z",
    "title_canon_sha256": "52604930c412c4d9272c4e23cad87e173728a08677a9d59429fca7fbe148935f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.07881",
    "kind": "arxiv",
    "version": 5
  }
}