Pith Number

pith:KY5XUNDF

pith:2025:KY5XUNDFKUTPZRUWHMM7FZS4ET

not attested not anchored not stored refs pending

Rubber band filters: optimal padding without edge artifacts

David Burghoff, Zhenyang Xiao

arxiv:2507.07347 v1 · 2025-07-10 · 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{KY5XUNDFKUTPZRUWHMM7FZS4ET}

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	2026-07-05T11:34:56.335832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

563b7a34655526fcc6963b19f2e65c24fed7af29eca80342795bc744cf49ef57

Aliases

arxiv: 2507.07347 · arxiv_version: 2507.07347v1 · doi: 10.48550/arxiv.2507.07347 · pith_short_12: KY5XUNDFKUTP · pith_short_16: KY5XUNDFKUTPZRUW · pith_short_8: KY5XUNDF

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/KY5XUNDFKUTPZRUWHMM7FZS4ET \
  | 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: 563b7a34655526fcc6963b19f2e65c24fed7af29eca80342795bc744cf49ef57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad3b34bab03d072d21debfac224eae5dfae69b26fe308732a2afd523d24a7cfe",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-07-10T00:19:37Z",
    "title_canon_sha256": "b25b341ef4deb5acb65f5651b2804469b12879ae6cce3dcdb5cfe5fb8b96efad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.07347",
    "kind": "arxiv",
    "version": 1
  }
}