Pith Number

pith:AFHWGYTJ

pith:2025:AFHWGYTJUZ52YJQURQOL33KRHG

not attested not anchored not stored refs pending

Resolving features and derivatives in noisy data using weighted Whittaker-Henderson smoothing

Ad Lagendijk, Bert Mulder, Willem L. Vos

arxiv:2509.22077 v2 · 2025-09-26 · physics.data-an · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFHWGYTJUZ52YJQURQOL33KRHG}

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	2026-08-20T01:21:52.944414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

014f636269a67bac26148c1cbded5139b9fddc78e99ecc6c06fed5f762a6b95e

Aliases

arxiv: 2509.22077 · arxiv_version: 2509.22077v2 · doi: 10.48550/arxiv.2509.22077 · pith_short_12: AFHWGYTJUZ52 · pith_short_16: AFHWGYTJUZ52YJQU · pith_short_8: AFHWGYTJ

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/AFHWGYTJUZ52YJQURQOL33KRHG \
  | 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: 014f636269a67bac26148c1cbded5139b9fddc78e99ecc6c06fed5f762a6b95e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b793b7594e99291e5342452ce3c9da7b484d8a4f70e487060ae3f4536f496d53",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2025-09-26T08:59:26Z",
    "title_canon_sha256": "b2543bce4dc8edf4409857beab3d5f6ebcdb5b76703aa4cc9edaeffe68d8a7eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.22077",
    "kind": "arxiv",
    "version": 2
  }
}