Pith Number

pith:EF4OE7ZR

pith:2003:EF4OE7ZRHXW7BPQ24DWMA7M3L5

not attested not anchored not stored refs pending

Spectral Statistics of RR Intervals in ECG

A. Knezevic, Croatia), J. Crnugelj (Rudjer Boskovic Institute, M. Martinis, V. Mikuta-Martinis, Zagreb

arxiv:physics/0301011 v1 · 2003-01-08 · 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{EF4OE7ZRHXW7BPQ24DWMA7M3L5}

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	2026-07-04T16:42:04.276207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2178e27f313dedf0be1ae0ecc07d9b5f6821b1174303d1622f9e71a84f8f88ac

Aliases

arxiv: physics/0301011 · arxiv_version: physics/0301011v1 · doi: 10.48550/arxiv.physics/0301011 · pith_short_12: EF4OE7ZRHXW7 · pith_short_16: EF4OE7ZRHXW7BPQ2 · pith_short_8: EF4OE7ZR

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/EF4OE7ZRHXW7BPQ24DWMA7M3L5 \
  | 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: 2178e27f313dedf0be1ae0ecc07d9b5f6821b1174303d1622f9e71a84f8f88ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ce9874e0d8cce53ab18262525fa961ca2b6fbe3ffdc5b1a7686686f13cd45ed",
    "cross_cats_sorted": [
      "q-bio"
    ],
    "license": "",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2003-01-08T16:15:19Z",
    "title_canon_sha256": "d2c14eef8475600ea8d704b24a23983a8aaf3d5ef7d422eb76e38d22b4bfc73d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0301011",
    "kind": "arxiv",
    "version": 1
  }
}