Pith Number

pith:VQ5ZBLWG

pith:1998:VQ5ZBLWGDVM5GVNA2AKEKZ3HEY

not attested not anchored not stored refs pending

Discrimination between Healthy and Sick Cardiac Autonomic Nervous System by Detrended Heart Rate Variability Analysis

H. Moelgaard, J. Levitan, K. Saermark, M. Lewkowicz, P.E. Bloch Thomsen, S. Havlin, Y. Ashkenazy

arxiv:chao-dyn/9810008 v2 · 1998-10-01 · chao-dyn · nlin.CD · physics.bio-ph · physics.data-an · physics.med-ph · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQ5ZBLWGDVM5GVNA2AKEKZ3HEY}

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	2026-05-18T01:07:24.544600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac3b90aec61d59d355a0d0144567672607681c09704f34938bd2a595830d737a

Aliases

arxiv: chao-dyn/9810008 · arxiv_version: chao-dyn/9810008v2 · doi: 10.48550/arxiv.chao-dyn/9810008 · pith_short_12: VQ5ZBLWGDVM5 · pith_short_16: VQ5ZBLWGDVM5GVNA · pith_short_8: VQ5ZBLWG

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/VQ5ZBLWGDVM5GVNA2AKEKZ3HEY \
  | 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: ac3b90aec61d59d355a0d0144567672607681c09704f34938bd2a595830d737a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d22f874e329cbc2243960af17a830d3677fa0bb3592df684d8495a300eb4851c",
    "cross_cats_sorted": [
      "nlin.CD",
      "physics.bio-ph",
      "physics.data-an",
      "physics.med-ph",
      "q-bio"
    ],
    "license": "",
    "primary_cat": "chao-dyn",
    "submitted_at": "1998-10-01T18:50:32Z",
    "title_canon_sha256": "6551980e98b24f4f2aac134e68e34fb843706f1df64098c0bb9766ed27ac2082"
  },
  "schema_version": "1.0",
  "source": {
    "id": "chao-dyn/9810008",
    "kind": "arxiv",
    "version": 2
  }
}