Pith Number

pith:KKBPUUBZ

pith:2009:KKBPUUBZMKSWD5ZFOOYVQGOMXZ

not attested not anchored not stored refs pending

GPU-based ultra fast IMRT plan optimization

Amitava Majumdar, Chunhua Men, Dongju Choi, Klaus Mueller, Steve B. Jiang, Xuejun Gu, Ziyi Zheng

arxiv:0908.4421 v1 · 2009-08-30 · 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{KKBPUUBZMKSWD5ZFOOYVQGOMXZ}

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	2026-05-18T02:12:12.867469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5282fa503962a561f72573b15819ccbe765504378a676ad131d4d2ce7e57aea4

Aliases

arxiv: 0908.4421 · arxiv_version: 0908.4421v1 · doi: 10.48550/arxiv.0908.4421 · pith_short_12: KKBPUUBZMKSW · pith_short_16: KKBPUUBZMKSWD5ZF · pith_short_8: KKBPUUBZ

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/KKBPUUBZMKSWD5ZFOOYVQGOMXZ \
  | 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: 5282fa503962a561f72573b15819ccbe765504378a676ad131d4d2ce7e57aea4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa077515d10301c9d3e24bbec2396ab7e970e504ed5a2a2fd5fe8d4cb8503045",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2009-08-30T20:06:26Z",
    "title_canon_sha256": "5144f2b4930525a2eacbc664a1ae28989bed39dd37d1720e16c617321378b0ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4421",
    "kind": "arxiv",
    "version": 1
  }
}