Pith Number

pith:X4RVO43N

pith:2009:X4RVO43NYLR2URBHQ7433EDFDP

not attested not anchored not stored refs pending

Enhanced imaging of microcalcifications in digital breast tomosynthesis through improved image-reconstruction algorithms

Daniel B. Kopans, Emil Y. Sidky, Ingrid S. Reiser, Richard H. Moore, Robert M. Nishikawa, Xiaochuan Pan

arxiv:0904.1016 v1 · 2009-04-07 · 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{X4RVO43NYLR2URBHQ7433EDFDP}

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	2026-05-18T02:14:07.145772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf2357736dc2e3aa442787f9bd90651bf1596a9d97fc3ec544a838cab71f7479

Aliases

arxiv: 0904.1016 · arxiv_version: 0904.1016v1 · doi: 10.48550/arxiv.0904.1016 · pith_short_12: X4RVO43NYLR2 · pith_short_16: X4RVO43NYLR2URBH · pith_short_8: X4RVO43N

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/X4RVO43NYLR2URBHQ7433EDFDP \
  | 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: bf2357736dc2e3aa442787f9bd90651bf1596a9d97fc3ec544a838cab71f7479

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4107527e4127f7735fa362549a692f769a951746df3201c546f7a69c8e771932",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2009-04-07T15:27:08Z",
    "title_canon_sha256": "c0370d8613922b9ac4972d6899b79a19232aeeb164cef58dc4c7e2ebc6d50362"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1016",
    "kind": "arxiv",
    "version": 1
  }
}