Pith Number

pith:72NEUK2V

pith:2026:72NEUK2VO3XP7YN7C42AEJ3MEX

not attested not anchored not stored refs pending

Magnet-Free Proton Therapy with 4D Pencil Beam Delivery Optimisation

Florentin Bieder, Nair N von Muehlenen, Philippe C Cattin, Ye Zhang

arxiv:2606.03562 v1 · 2026-06-02 · 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{72NEUK2VO3XP7YN7C42AEJ3MEX}

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	2026-06-03T01:06:00.858291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe9a4a2b5576eeffe1bf173402276c25d720819fbc3f2585643b5bb4ccaeaf91

Aliases

arxiv: 2606.03562 · arxiv_version: 2606.03562v1 · doi: 10.48550/arxiv.2606.03562 · pith_short_12: 72NEUK2VO3XP · pith_short_16: 72NEUK2VO3XP7YN7 · pith_short_8: 72NEUK2V

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/72NEUK2VO3XP7YN7C42AEJ3MEX \
  | 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: fe9a4a2b5576eeffe1bf173402276c25d720819fbc3f2585643b5bb4ccaeaf91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c64abb736a6f1158246fe1313d66de6941f732d632aaa04a538185949051014",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2026-06-02T12:29:12Z",
    "title_canon_sha256": "b84ca57a960b7afbe63ffdba533adde587552dedd94c415de422f6fec159be80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.03562",
    "kind": "arxiv",
    "version": 1
  }
}