Pith Number

pith:URGO4PUF

pith:2021:URGO4PUFUCU5SDTE2R26K77WJT

not attested not anchored not stored refs pending

PRETUS: A plug-in based platform for real-time ultrasound imaging research

Alberto Gomez, Bernhard Kainz, Emily Skelton, Gavin Wheeler, Jackie Matthew, Jo Hajnal, Julia Schnabel, Nicolas Toussaint, Robert Wright, Shujie Deng, Veronika A. Zimmer

arxiv:2109.06519 v1 · 2021-09-14 · physics.med-ph · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URGO4PUFUCU5SDTE2R26K77WJT}

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	2026-07-05T03:14:27.555896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a44cee3e85a0a9d90e64d475e57ff64cfd743fedd69df9626e0b541ac548e8a9

Aliases

arxiv: 2109.06519 · arxiv_version: 2109.06519v1 · doi: 10.48550/arxiv.2109.06519 · pith_short_12: URGO4PUFUCU5 · pith_short_16: URGO4PUFUCU5SDTE · pith_short_8: URGO4PUF

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/URGO4PUFUCU5SDTE2R26K77WJT \
  | 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: a44cee3e85a0a9d90e64d475e57ff64cfd743fedd69df9626e0b541ac548e8a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e98b23a7bafefdbd3f7e5a3f2b814b16d06d03f5ba550060c6a8f3f2ae2814f",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2021-09-14T08:30:14Z",
    "title_canon_sha256": "0de03ac37f323a2a588a3e3c6c67b62c2ce717a6cda9f7ed2cfd46cd3ba47139"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.06519",
    "kind": "arxiv",
    "version": 1
  }
}