Pith Number

pith:W53YC27E

pith:2022:W53YC27ER52GMNMEUTESU643GB

not attested not anchored not stored refs pending

POLCOVID: a multicenter multiclass chest X-ray database (Poland, 2020-2021)

Aleksandra Suwalska, Andrzej Cieszanowski, Barbara Gizycka, Damian Piotrowski, Edyta Szurowska, Gabriela Zapolska, Grzegorz Przybylski, Jerzy Walecki, Joanna Polanska, Joanna Tobiasz, Katarzyna Gruszczynska, Krzysztof Simon, Magdalena Sliwinska, Malgorzata Pawlowska, Marek Socha, Mateusz Nowak, Michal Marczyk, Pawel Foszner, Piotr Fiedor, POLCOVID Study Group, Robert Flisiak, Tadeusz Popiela, Wojciech Prazuch

arxiv:2211.16359 v3 · 2022-11-29 · eess.IV · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W53YC27ER52GMNMEUTESU643GB}

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	2026-07-05T05:25:32.019461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b777816be48f74663584a4c92a7b9b307348caca3ec8f99d73ea703dbff71a6f

Aliases

arxiv: 2211.16359 · arxiv_version: 2211.16359v3 · doi: 10.48550/arxiv.2211.16359 · pith_short_12: W53YC27ER52G · pith_short_16: W53YC27ER52GMNME · pith_short_8: W53YC27E

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/W53YC27ER52GMNMEUTESU643GB \
  | 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: b777816be48f74663584a4c92a7b9b307348caca3ec8f99d73ea703dbff71a6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56029b293e8d42a9e08aca813a79ec9e8d75a551b886334206e6fe2846c21206",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2022-11-29T16:42:53Z",
    "title_canon_sha256": "a86f0bc00da1dc6866349b8ef34bb20545ad6a55ecfde512f47b20a8c5b15ca7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.16359",
    "kind": "arxiv",
    "version": 3
  }
}