Pith Number

pith:SD5FAX7K

pith:2009:SD5FAX7KPGIU5HT6RTRTXUT2EV

not attested not anchored not stored refs pending

A feasibility study of treatment verification using EPID cine images for hypofractionated lung radiotherapy

Steve Jiang, Tong Lin, Xiaoli Tang

arxiv:0904.4912 v1 · 2009-04-30 · physics.med-ph · physics.bio-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{SD5FAX7KPGIU5HT6RTRTXUT2EV}

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	2026-05-18T02:13:48.666827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90fa505fea79914e9e7e8ce33bd27a25722df8403a7b4fd23fe78d559d3fcecb

Aliases

arxiv: 0904.4912 · arxiv_version: 0904.4912v1 · doi: 10.48550/arxiv.0904.4912 · pith_short_12: SD5FAX7KPGIU · pith_short_16: SD5FAX7KPGIU5HT6 · pith_short_8: SD5FAX7K

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/SD5FAX7KPGIU5HT6RTRTXUT2EV \
  | 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: 90fa505fea79914e9e7e8ce33bd27a25722df8403a7b4fd23fe78d559d3fcecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3a97c973aa018f499b4cfa7156458b3f6c304241ebbb123e685354516306ef4",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2009-04-30T18:30:23Z",
    "title_canon_sha256": "8cd90286405fa34e10efeb0035546665cbde100b6a6014709c4fcbb6265215d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4912",
    "kind": "arxiv",
    "version": 1
  }
}