Pith Number

pith:PHH63SGO

pith:2025:PHH63SGOZ72HJBEZ6WCWVE7G7W

not attested not anchored not stored refs pending

Unified 3D MRI Representations via Sequence-Invariant Contrastive Learning

Cathy J. Price, Jenny Crinion, John Ashburner, Liam Chalcroft

arxiv:2501.12057 v3 · 2025-01-21 · cs.CV · 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{PHH63SGOZ72HJBEZ6WCWVE7G7W}

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	2026-07-05T11:44:44.338082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79cfedc8cecff4748499f5856a93e6fd912307e9433de6aee3fb52e4ff79919f

Aliases

arxiv: 2501.12057 · arxiv_version: 2501.12057v3 · doi: 10.48550/arxiv.2501.12057 · pith_short_12: PHH63SGOZ72H · pith_short_16: PHH63SGOZ72HJBEZ · pith_short_8: PHH63SGO

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/PHH63SGOZ72HJBEZ6WCWVE7G7W \
  | 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: 79cfedc8cecff4748499f5856a93e6fd912307e9433de6aee3fb52e4ff79919f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0cbe5acc5d5bc204fa45da27419ba340e7a9747388b1a79404b5cf80618e938",
    "cross_cats_sorted": [
      "physics.med-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-01-21T11:27:54Z",
    "title_canon_sha256": "37cff0c9a47f808531fe1ab8bcfcac6850f018beb9a8361ce46c72901fd4234a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.12057",
    "kind": "arxiv",
    "version": 3
  }
}