Pith Number

pith:NCR4EGUW

pith:2025:NCR4EGUWPKYFLYRJ7WQC4ZULDW

not attested not anchored not stored refs pending

Comparison of Magnetic Field Characteristics among 3 Tesla MRI Scanners: An Experimental Measurement Study

Francesco Girardello, Giuseppe Acri, Maria Antonietta D'Avanzo, Massimo Mattozzi, Valentina Hartwig, Victorian Michele Ferro

arxiv:2507.20818 v1 · 2025-07-28 · 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{NCR4EGUWPKYFLYRJ7WQC4ZULDW}

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	2026-07-05T11:44:26.433386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68a3c21a967ab055e229fda02e668b1d8a80072dc1bd31acc2f772b80a50dcac

Aliases

arxiv: 2507.20818 · arxiv_version: 2507.20818v1 · doi: 10.48550/arxiv.2507.20818 · pith_short_12: NCR4EGUWPKYF · pith_short_16: NCR4EGUWPKYFLYRJ · pith_short_8: NCR4EGUW

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/NCR4EGUWPKYFLYRJ7WQC4ZULDW \
  | 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: 68a3c21a967ab055e229fda02e668b1d8a80072dc1bd31acc2f772b80a50dcac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0c637cddc9fa5bbbdc71b9ee87c2b0d642f450c99b62cd01dbda40a6f423c30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2025-07-28T13:24:50Z",
    "title_canon_sha256": "7a7954c2666a1427525df20d3a803fc6106e26ba3f6eb2bd219e52302b5196ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.20818",
    "kind": "arxiv",
    "version": 1
  }
}