Pith Number

pith:4KM7EDQL

pith:2025:4KM7EDQLO532PPLVRJOUSMHGD3

not attested not anchored not stored refs pending

In-vivo real-time 13C-MRSI without polarizer on site: across cities transportable hyperpolarization using UV-induced labile radicals

Andrea Capozzi, Christoffer Laustsen, Esben Sovso Szocska Hansen, Jan Henrik Ardenkjaer-Larsen, Jan Kilund, Lotte Bonde Bertelsen, Magnus Karlsson, Mathilde H. Lerche, Yupeng Zhao

arxiv:2503.18537 v1 · 2025-03-24 · physics.med-ph · physics.chem-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{4KM7EDQLO532PPLVRJOUSMHGD3}

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	2026-07-05T10:38:12.741519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e299f20e0b7777a7bd758a5d4930e61efce226b1fa1991c97bfdb7feb7661706

Aliases

arxiv: 2503.18537 · arxiv_version: 2503.18537v1 · doi: 10.48550/arxiv.2503.18537 · pith_short_12: 4KM7EDQLO532 · pith_short_16: 4KM7EDQLO532PPLV · pith_short_8: 4KM7EDQL

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/4KM7EDQLO532PPLVRJOUSMHGD3 \
  | 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: e299f20e0b7777a7bd758a5d4930e61efce226b1fa1991c97bfdb7feb7661706

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25edaf4eda3dd43fb27ee73ff7e5fe597f12c5a80c28d7f1f2e63c18583d05a2",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2025-03-24T10:45:02Z",
    "title_canon_sha256": "0a9c2c4141a8211349a0807137914ff55eac64316ec21ddca6d76d5ee0b48ed8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.18537",
    "kind": "arxiv",
    "version": 1
  }
}