Pith Number

pith:R7QQQJDY

pith:2019:R7QQQJDYDD6LHVULT4VNBJ4RGF

not attested not anchored not stored refs pending

Improving Heart Rate Variability Measurements from Consumer Smartwatches with Machine Learning

Caterina B\'erub\'e, Felix Wortmann, Martin Maritsch, Mathias Kraus, Stefan Feuerriegel, Thomas Z\"uger, Tobias Kowatsch, Vera Lehmann

arxiv:1907.07496 v1 · 2019-07-17 · cs.LG · cs.HC · 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{R7QQQJDYDD6LHVULT4VNBJ4RGF}

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	2026-05-17T23:40:22.020409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fe108247818fcb3d68b9f2ad0a791315a537cb8b5cbf047b0c808187cd7b403

Aliases

arxiv: 1907.07496 · arxiv_version: 1907.07496v1 · doi: 10.48550/arxiv.1907.07496 · pith_short_12: R7QQQJDYDD6L · pith_short_16: R7QQQJDYDD6LHVUL · pith_short_8: R7QQQJDY

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/R7QQQJDYDD6LHVULT4VNBJ4RGF \
  | 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: 8fe108247818fcb3d68b9f2ad0a791315a537cb8b5cbf047b0c808187cd7b403

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "836c6cdc04e6ba32d41206b1cce475c59081f3b24456a5d5436b6964730c1b76",
    "cross_cats_sorted": [
      "cs.HC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-07-17T13:16:57Z",
    "title_canon_sha256": "c5d06fe8891cad135a4e494206c78a074893647ef7611fa86c2f6528b52b3082"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07496",
    "kind": "arxiv",
    "version": 1
  }
}