Pith Number

pith:UFDTFYNV

pith:2026:UFDTFYNVDUWTBV7M5GFG6HZYRH

not attested not anchored not stored refs pending

RadMaps: A Geospatial Framework for Simultaneously Modelling Capacity and Geographic Constraints on Radiotherapy Access

Alika Ho, Archie Brown, Laurence Wroe, Sophia Martin, Steinar Stapnes

arxiv:2605.23456 v1 · 2026-05-22 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFDTFYNVDUWTBV7M5GFG6HZYRH}

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	2026-05-25T02:01:55.119207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a14732e1b51d2d30d7ece98a6f1f3889d0bbebbe5c25dcda38d3a8e758fd00d7

Aliases

arxiv: 2605.23456 · arxiv_version: 2605.23456v1 · doi: 10.48550/arxiv.2605.23456 · pith_short_12: UFDTFYNVDUWT · pith_short_16: UFDTFYNVDUWTBV7M · pith_short_8: UFDTFYNV

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/UFDTFYNVDUWTBV7M5GFG6HZYRH \
  | 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: a14732e1b51d2d30d7ece98a6f1f3889d0bbebbe5c25dcda38d3a8e758fd00d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7b69e77ddabfe9a11ef05f090b4470d51ba812f54556046fe2d74215eaa058b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2026-05-22T10:13:38Z",
    "title_canon_sha256": "93c5f9b2454b9ffd714e41c917602288bfa8ec6ef6594d034d4562c93cb6b920"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23456",
    "kind": "arxiv",
    "version": 1
  }
}