Pith Number

pith:HV2LMPAA

pith:2020:HV2LMPAAMHX6PJKMAE5FQNUOCX

not attested not anchored not stored refs pending

Automatic Detection of Cardiac Chambers Using an Attention-based YOLOv4 Framework from Four-chamber View of Fetal Echocardiography

Gang Luo, Min Wang, Shanchen Pang, Sibo Qiao, Silin Pan, Taotao Chen, Xue Zhai, Xun Wang

arxiv:2011.13096 v2 · 2020-11-26 · cs.CV · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HV2LMPAAMHX6PJKMAE5FQNUOCX}

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	2026-07-05T01:58:57.220929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d74b63c0061efe7a54c013a58368e15e63e4e06e2e927c17023eac609473d5e

Aliases

arxiv: 2011.13096 · arxiv_version: 2011.13096v2 · doi: 10.48550/arxiv.2011.13096 · pith_short_12: HV2LMPAAMHX6 · pith_short_16: HV2LMPAAMHX6PJKM · pith_short_8: HV2LMPAA

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/HV2LMPAAMHX6PJKMAE5FQNUOCX \
  | 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: 3d74b63c0061efe7a54c013a58368e15e63e4e06e2e927c17023eac609473d5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de60ac5f979005e71586495b66d826a55466f66d840b0fccd5bc65df293a722d",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-11-26T02:28:24Z",
    "title_canon_sha256": "15e418f64453184612e8e661e56736e7a88f5e8bb998a9675c41f31119fe0b7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.13096",
    "kind": "arxiv",
    "version": 2
  }
}