Pith Number

pith:UXQRDMBZ

pith:2026:UXQRDMBZNHTFNPTM7QJXW7BZNA

not attested not anchored not stored refs pending

Adjoint-based Perfusion Estimation from Dynamic Contrast-Enhanced Ultrasound: Advection-Diffusion and Two-Compartment Models

Ahmed El Kaffas, Dimitre Hristov, Sebastian G\"otschel, Sophie Externbrink

arxiv:2606.07195 v1 · 2026-06-05 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UXQRDMBZNHTFNPTM7QJXW7BZNA}

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	2026-06-08T01:04:51.904661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5e111b03969e656be6cfc137b7c396821843458a25acbbc9691989b090352d8

Aliases

arxiv: 2606.07195 · arxiv_version: 2606.07195v1 · doi: 10.48550/arxiv.2606.07195 · pith_short_12: UXQRDMBZNHTF · pith_short_16: UXQRDMBZNHTFNPTM · pith_short_8: UXQRDMBZ

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/UXQRDMBZNHTFNPTM7QJXW7BZNA \
  | 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: a5e111b03969e656be6cfc137b7c396821843458a25acbbc9691989b090352d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36c2cee36d41ad9066c2163733c1d3f5b43daca607585f7b2b00bba0b13aaf69",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-05T12:01:59Z",
    "title_canon_sha256": "9c3d04ecd38899757b3a72919e96bf14b3c527c8bbb0c264dd20dba954551656"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07195",
    "kind": "arxiv",
    "version": 1
  }
}