Pith Number

pith:HFEWPJGN

pith:2016:HFEWPJGNM7SXZMYZKSAK7WQMF5

not attested not anchored not stored refs pending

Explaining Radiological Emphysema Subtypes with Unsupervised Texture Prototypes: MESA COPD Study

Andrew F. Laine, Benjamin M. Smith, David A. Bluemke, Elsa D. Angelini, Eric A. Hoffman, Jie Yang, John H.M. Austin, R. Graham Barr

arxiv:1612.01820 v1 · 2016-12-05 · 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{HFEWPJGNM7SXZMYZKSAK7WQMF5}

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	2026-05-18T00:55:47.536233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

394967a4cd67e57cb3195480afda0c2f72a7f5d73d9363043c2b5b33ffe717ca

Aliases

arxiv: 1612.01820 · arxiv_version: 1612.01820v1 · doi: 10.48550/arxiv.1612.01820 · pith_short_12: HFEWPJGNM7SX · pith_short_16: HFEWPJGNM7SXZMYZ · pith_short_8: HFEWPJGN

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/HFEWPJGNM7SXZMYZKSAK7WQMF5 \
  | 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: 394967a4cd67e57cb3195480afda0c2f72a7f5d73d9363043c2b5b33ffe717ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d2bfd75df840b54afddf8372c6401266d22e4b199210e5c9041c1facdf1908",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2016-12-05T20:42:20Z",
    "title_canon_sha256": "7eace193d2d1c7bfc7f3d3dc495699648aeb04fc9dd14cfa156b9cd770fa541e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01820",
    "kind": "arxiv",
    "version": 1
  }
}