Pith Number

pith:VQFDUXTL

pith:2026:VQFDUXTL76CIYKQO7SSNWXXYQW

not attested not anchored not stored refs pending

Elastic Non-Uniform FFT (ENUFFT) spectral reconstruction of irregularly sampled orography on unstructured grids

Felix Jochum, Tridib Banerjee, Ulrich Achatz

arxiv:2606.21278 v1 · 2026-06-19 · physics.ao-ph · physics.comp-ph · physics.geo-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{VQFDUXTL76CIYKQO7SSNWXXYQW}

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	2026-06-23T01:12:35.704281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac0a3a5e6bff848c2a0efca4db5ef8859ade4d470306273b53e0d5b90de1a01a

Aliases

arxiv: 2606.21278 · arxiv_version: 2606.21278v1 · doi: 10.48550/arxiv.2606.21278 · pith_short_12: VQFDUXTL76CI · pith_short_16: VQFDUXTL76CIYKQO · pith_short_8: VQFDUXTL

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/VQFDUXTL76CIYKQO7SSNWXXYQW \
  | 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: ac0a3a5e6bff848c2a0efca4db5ef8859ade4d470306273b53e0d5b90de1a01a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42dcad85de9d34d483821a2ef97061d6e1812a3bf645fc03972c2b43611a46a9",
    "cross_cats_sorted": [
      "physics.comp-ph",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2026-06-19T09:53:30Z",
    "title_canon_sha256": "a974e571148cc0a20dae1c930309e4eca0d84c517869c05f3a608e809e711161"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21278",
    "kind": "arxiv",
    "version": 1
  }
}