Pith Number

pith:T6MKVY6J

pith:2019:T6MKVY6J5IEUNO6MLYKQEJLHRO

not attested not anchored not stored refs pending

Evaluating the Portability of an NLP System for Processing Echocardiograms: A Retrospective, Multi-site Observational Study

Daniel J. Stone, Fei Wang, Guoqian Jiang, Jennifer A. Pacheco, Jessica S. Ancker, Jyotishman Pathak, Liang Yao, Luke V. Rasmussen, Pascal S. Brandt, Paul R. Kingsbury, Prakash Adekkanattu, Richard C. Kiefer, Thomas R. Campion, Yizhen Zhong, Yuan Luo, Yu Deng, Zhenxing Xu

arxiv:1905.01961 v1 · 2019-04-02 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T6MKVY6J5IEUNO6MLYKQEJLHRO}

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	2026-05-17T23:46:56.891881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f98aae3c9ea0946bbcc5e150225678b87cabbc4027edae02c8a170c35cb302f

Aliases

arxiv: 1905.01961 · arxiv_version: 1905.01961v1 · doi: 10.48550/arxiv.1905.01961 · pith_short_12: T6MKVY6J5IEU · pith_short_16: T6MKVY6J5IEUNO6M · pith_short_8: T6MKVY6J

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/T6MKVY6J5IEUNO6MLYKQEJLHRO \
  | 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: 9f98aae3c9ea0946bbcc5e150225678b87cabbc4027edae02c8a170c35cb302f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d491651c33f523904d6d4f87a230651a02eb878305d4a15c162de8f93f26960f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-04-02T02:01:28Z",
    "title_canon_sha256": "b9b4a7a761e0dc898a152ce88367dc7707cabd256393ef4d837b96a6756241f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.01961",
    "kind": "arxiv",
    "version": 1
  }
}