Pith Number

pith:PFAHI3WP

pith:2018:PFAHI3WPMOYK7NBSU4BKHS54TP

not attested not anchored not stored refs pending

A Monte-Carlo-based and GPU-accelerated 4D-dose calculator for a pencil-beam scanning proton therapy system

Chris Beltran, Erik Tryggestad, H. Wan Chan Tseung, Jedediah E. Johnson, Mark D. Pepin, Michael G. Herman

arxiv:1809.03927 v2 · 2018-09-11 · 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{PFAHI3WPMOYK7NBSU4BKHS54TP}

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	2026-05-18T00:05:50.254934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7940746ecf63b0afb432a702a3cbbc9bcfbce4417557f3c4abc471b82a6720ea

Aliases

arxiv: 1809.03927 · arxiv_version: 1809.03927v2 · doi: 10.48550/arxiv.1809.03927 · pith_short_12: PFAHI3WPMOYK · pith_short_16: PFAHI3WPMOYK7NBS · pith_short_8: PFAHI3WP

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/PFAHI3WPMOYK7NBSU4BKHS54TP \
  | 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: 7940746ecf63b0afb432a702a3cbbc9bcfbce4417557f3c4abc471b82a6720ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "357663b95319039db06cfb8fbc9280e0e3bcdb810a9ec968f536a94221c5c74a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2018-09-11T14:26:59Z",
    "title_canon_sha256": "d3575f8d28fd35485543b8a4c3579387fc6d88366a4c20206d9278c68a77505f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03927",
    "kind": "arxiv",
    "version": 2
  }
}