Pith Number

pith:AZTC7DUL

pith:2019:AZTC7DUL5LL3GR2PLLZCNOC7RN

not attested not anchored not stored refs pending

Penalized-likelihood PET Image Reconstruction Using 3D Structural Convolutional Sparse Coding

Huafeng Liu, Kuang Gong, Ning Guo, Nuobei Xie, Quanzheng Li, Zhifang Wu, Zhixin Qin

arxiv:1912.07180 v1 · 2019-12-16 · physics.med-ph · cs.LG · eess.IV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AZTC7DUL5LL3GR2PLLZCNOC7RN}

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	2026-07-05T00:26:19.121310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06662f8e8bead7b3474f5af226b85f8b46b18e5df57a7506d71085832edb37c6

Aliases

arxiv: 1912.07180 · arxiv_version: 1912.07180v1 · doi: 10.48550/arxiv.1912.07180 · pith_short_12: AZTC7DUL5LL3 · pith_short_16: AZTC7DUL5LL3GR2P · pith_short_8: AZTC7DUL

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/AZTC7DUL5LL3GR2PLLZCNOC7RN \
  | 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: 06662f8e8bead7b3474f5af226b85f8b46b18e5df57a7506d71085832edb37c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6f0246a8e4d496b729fb52967fbf391ee8a74a6a8a04a827e1d8e597fa5cc3a",
    "cross_cats_sorted": [
      "cs.LG",
      "eess.IV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2019-12-16T03:57:55Z",
    "title_canon_sha256": "5f49edd0d02334098793459a8b6a08c0f9f291b53a664ae105068c604977af7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.07180",
    "kind": "arxiv",
    "version": 1
  }
}