Pith Number

pith:SO5BOH5G

pith:2019:SO5BOH5GVVOG6FBKZ77WH6ZRLC

not attested not anchored not stored refs pending

Registration of retinal images from Public Health by minimising an error between vessels using an affine model with radial distortions

A Crowder (DESW), D. Owens, G Bhakta (DESW), Guillaume Noyel (IPRI, P. Boyle (IPRI, R Thomas, SIGPH@iPRI), S Iles (DESW)

arxiv:1904.12733 v1 · 2019-04-17 · physics.med-ph · 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{SO5BOH5GVVOG6FBKZ77WH6ZRLC}

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	2026-05-17T23:40:10.884994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93ba171fa6ad5c6f142acfff63fb315894248c6dbfc0bf877436ec8030262e94

Aliases

arxiv: 1904.12733 · arxiv_version: 1904.12733v1 · doi: 10.48550/arxiv.1904.12733 · pith_short_12: SO5BOH5GVVOG · pith_short_16: SO5BOH5GVVOG6FBK · pith_short_8: SO5BOH5G

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/SO5BOH5GVVOG6FBKZ77WH6ZRLC \
  | 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: 93ba171fa6ad5c6f142acfff63fb315894248c6dbfc0bf877436ec8030262e94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5fa636683e07d89a1991cb190445984b0212d54ccca1dd2229eefbe1582f13f",
    "cross_cats_sorted": [
      "cs.CV",
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2019-04-17T12:30:38Z",
    "title_canon_sha256": "951803d44adc8c08c53d13244192b2f6b45183b745a8ed8113a5bc5a7b14b8ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12733",
    "kind": "arxiv",
    "version": 1
  }
}