Pith Number

pith:OJCQF6K2

pith:2025:OJCQF6K2WEK5XV2SHFVM4LYQRO

not attested not anchored not stored refs pending

Topology optimization of a superabsorbing thin-film semiconductor metasurface

Antonio Cal\`a Lesina, Emadeldeen Hassan, Izzatjon Allayarov, Johannes Gedeon

arxiv:2502.19352 v2 · 2025-02-26 · physics.optics · physics.comp-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{OJCQF6K2WEK5XV2SHFVM4LYQRO}

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	2026-07-05T11:27:52.921728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

724502f95ab115dbd752396ace2f108ba9776429944c57485c7d1b31f20d0d37

Aliases

arxiv: 2502.19352 · arxiv_version: 2502.19352v2 · doi: 10.48550/arxiv.2502.19352 · pith_short_12: OJCQF6K2WEK5 · pith_short_16: OJCQF6K2WEK5XV2S · pith_short_8: OJCQF6K2

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/OJCQF6K2WEK5XV2SHFVM4LYQRO \
  | 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: 724502f95ab115dbd752396ace2f108ba9776429944c57485c7d1b31f20d0d37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7682c4aac5ad5509e1938114fdaf3037f5ee7e7616538ae08bd5b606a195d6ed",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-02-26T17:53:02Z",
    "title_canon_sha256": "3e454a219f705dd59eea9bd058b31b19439518ff337ceae8118ac860345529bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.19352",
    "kind": "arxiv",
    "version": 2
  }
}