pith. sign in
Pith Number

pith:3LGIKKUR

pith:1999:3LGIKKURZUUB5JA4MFZN2MFZZH
not attested not anchored not stored refs pending

Sleep-Wake Differences in Scaling Behavior of the Human Heartbeat: Analysis of Terrestrial and Long-Term Space Flight Data

Armin Bunde, Ary L. Goldberger, H. Eugene Stanley, Janice Fritsch-Yelle, Lu\'is A. N. Amaral, Plamen Ch. Ivanov, Roman M. Baevsky, Shlomo Havlin

arxiv:cond-mat/9911073 v1 · 1999-11-05 · cond-mat.stat-mech · q-bio

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{3LGIKKURZUUB5JA4MFZN2MFZZH}

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 2026-05-18T01:09:19.730725Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738

Aliases

arxiv: cond-mat/9911073 · arxiv_version: cond-mat/9911073v1 · doi: 10.48550/arxiv.cond-mat/9911073 · pith_short_12: 3LGIKKURZUUB · pith_short_16: 3LGIKKURZUUB5JA4 · pith_short_8: 3LGIKKUR
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/3LGIKKURZUUB5JA4MFZN2MFZZH \
  | 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: dacc852a91cd281ea41c6172dd30b9c9ccae8a722af317f1b89ac35a8cf0d738
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "86b334ccb40a4f532cf9d1b0755dccd68f96a5b3b5a1f67f37a0b3d5dca4f80c",
    "cross_cats_sorted": [
      "q-bio"
    ],
    "license": "",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "1999-11-05T02:46:18Z",
    "title_canon_sha256": "291bc5e8e2b25aaf5b33599866d21b3ceb56fc1e2d7cbb19d2f89113860a89b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9911073",
    "kind": "arxiv",
    "version": 1
  }
}