Pith Number

pith:WJL4XZ2R

pith:2025:WJL4XZ2RRCGNNMVUNTECOX3RXR

not attested not anchored not stored refs pending

First Positronium Lifetime Imaging with Scandium-44 on a Long Axial Field-of-view PET/CT

Anzhelika Moiseeva, Axel Rominger, Ewa {\L}. St\k{e}pie\'n, Hasan Sari, Kuangyu Shi, Lorenzo Mercolli, Maurizio Conti, Narendra Rathod, Nicholas P. van der Meulen, Pascal V. Grundler, Pawe{\l} Moskal, Robert Seifert, Roger Schibli, Saverio Braccini, William M. Steinberger

arxiv:2506.13460 v2 · 2025-06-16 · 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{WJL4XZ2RRCGNNMVUNTECOX3RXR}

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	2026-07-05T11:22:42.725184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b257cbe751888cd6b2b46cc8275f71bc42dc1d7923be8703805df42f345bef9b

Aliases

arxiv: 2506.13460 · arxiv_version: 2506.13460v2 · doi: 10.48550/arxiv.2506.13460 · pith_short_12: WJL4XZ2RRCGN · pith_short_16: WJL4XZ2RRCGNNMVU · pith_short_8: WJL4XZ2R

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/WJL4XZ2RRCGNNMVUNTECOX3RXR \
  | 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: b257cbe751888cd6b2b46cc8275f71bc42dc1d7923be8703805df42f345bef9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5de44fa780e99a6122e0e5bc0393dc9672648584078f1143c28ac1875b3fe24b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2025-06-16T13:15:35Z",
    "title_canon_sha256": "26ed9fa815610004a7f13082c69f4933d63be744bae57a095890a1559e3faaba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.13460",
    "kind": "arxiv",
    "version": 2
  }
}