Pith Number

pith:VJDG4KVU

pith:2019:VJDG4KVUUKI3AIBTZDSQCMYV53

not attested not anchored not stored refs pending

Recovery of the fetal electrocardiogram for morphological analysis from two trans-abdominal channels via optimal shrinkage

Hau-Tieng Wu, Pei-Chun Su, Piers Barker, Salim Idriss, Stephen Miller

arxiv:1904.09525 v2 · 2019-04-21 · eess.SP · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VJDG4KVUUKI3AIBTZDSQCMYV53}

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	2026-07-04T23:52:21.134467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa466e2ab4a291b02033c8e5013315eee1f70ec93db1cbac14a7333084b63a8f

Aliases

arxiv: 1904.09525 · arxiv_version: 1904.09525v2 · doi: 10.48550/arxiv.1904.09525 · pith_short_12: VJDG4KVUUKI3 · pith_short_16: VJDG4KVUUKI3AIBT · pith_short_8: VJDG4KVU

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/VJDG4KVUUKI3AIBTZDSQCMYV53 \
  | 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: aa466e2ab4a291b02033c8e5013315eee1f70ec93db1cbac14a7333084b63a8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43c2be4cc87c87464c707b8f01ad922f3133db67930dff95cb8a24bec47486bf",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-04-21T01:31:44Z",
    "title_canon_sha256": "68e42df796a32215a72907eefb2b70bb54c6ac1590b18d069e09390de6b6d54b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09525",
    "kind": "arxiv",
    "version": 2
  }
}