Pith Number

pith:2YULU6DM

pith:2021:2YULU6DMX4UZDJVZKTFAZCRCZ4

not attested not anchored not stored refs pending

CheXternal: Generalization of Deep Learning Models for Chest X-ray Interpretation to Photos of Chest X-rays and External Clinical Settings

Andrew Y. Ng, Anirudh Joshi, Anuj Pareek, Matthew P. Lungren, Pranav Rajpurkar

arxiv:2102.08660 v2 · 2021-02-17 · eess.IV · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2YULU6DMX4UZDJVZKTFAZCRCZ4}

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	2026-07-05T02:16:53.872292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d628ba786cbf2991a6b954ca0c8a22cf196aa9298d860ad02804617ced39106d

Aliases

arxiv: 2102.08660 · arxiv_version: 2102.08660v2 · doi: 10.48550/arxiv.2102.08660 · pith_short_12: 2YULU6DMX4UZ · pith_short_16: 2YULU6DMX4UZDJVZ · pith_short_8: 2YULU6DM

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/2YULU6DMX4UZDJVZKTFAZCRCZ4 \
  | 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: d628ba786cbf2991a6b954ca0c8a22cf196aa9298d860ad02804617ced39106d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fedaa5a1f7ef6cb4d8f5ff1a99cb0c46c425721e34c3d0f82ff871d8c5b4ade",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-02-17T09:58:14Z",
    "title_canon_sha256": "2496ce70413bfc373f1479856c6c63f5a00506b50d69c6251aed124868a80adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.08660",
    "kind": "arxiv",
    "version": 2
  }
}