Pith Number

pith:ZWH6Q3IL

pith:2013:ZWH6Q3ILJ5MIHKKBHYV3QEP3OV

not attested not anchored not stored refs pending

Geometric tree kernels: Classification of COPD from airway tree geometry

Aasa Feragen, Asger Dirksen, Dominik Grimm, Jens Petersen, Jesper Holst Pedersen, Karsten Borgwardt, Marleen de Bruijne

arxiv:1303.7390 v2 · 2013-03-29 · 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{ZWH6Q3ILJ5MIHKKBHYV3QEP3OV}

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	2026-05-18T03:28:45.211625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd8fe86d0b4f5883a9413e2bb811fb755903eda36e9e19a3e7596466b84c4d24

Aliases

arxiv: 1303.7390 · arxiv_version: 1303.7390v2 · doi: 10.48550/arxiv.1303.7390 · pith_short_12: ZWH6Q3ILJ5MI · pith_short_16: ZWH6Q3ILJ5MIHKKB · pith_short_8: ZWH6Q3IL

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/ZWH6Q3ILJ5MIHKKBHYV3QEP3OV \
  | 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: cd8fe86d0b4f5883a9413e2bb811fb755903eda36e9e19a3e7596466b84c4d24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b274e00f7758b7b02a85f3ff9d1b46420234338c38ea09a2f5f8d46e810874e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-03-29T13:25:17Z",
    "title_canon_sha256": "9f633ef6640f1b1bf9e4053809a0651c67bc44a63735c9fec7f7de9ff24b6763"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7390",
    "kind": "arxiv",
    "version": 2
  }
}