Pith Number

pith:7FEUP7LB

pith:2004:7FEUP7LBRYOWYUM5VUOIPRRV72

not attested not anchored not stored refs pending

A Method to Separate Stochastic and Deterministic Information from Electrocardiograms

L. Sandoval, R.M. Guti\'errez

arxiv:physics/0408134 v1 · 2004-08-31 · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7FEUP7LBRYOWYUM5VUOIPRRV72}

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	2026-05-18T01:08:48.738356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f94947fd618e1d6c519dad1c87c635feaa418b8c92a39b37986d8b272313c695

Aliases

arxiv: physics/0408134 · arxiv_version: physics/0408134v1 · doi: 10.48550/arxiv.physics/0408134 · pith_short_12: 7FEUP7LBRYOW · pith_short_16: 7FEUP7LBRYOWYUM5 · pith_short_8: 7FEUP7LB

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/7FEUP7LBRYOWYUM5VUOIPRRV72 \
  | 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: f94947fd618e1d6c519dad1c87c635feaa418b8c92a39b37986d8b272313c695

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f28aa07559e2798bc20e489f686bc0605d3a76f77383e04f0bbe47f0a3b4ec29",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.data-an",
    "submitted_at": "2004-08-31T17:17:34Z",
    "title_canon_sha256": "5fc3be0436ff8e157f9504da3ae776e563cc61a8ac8e5362f8e24166250bccd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0408134",
    "kind": "arxiv",
    "version": 1
  }
}