Pith Number

pith:BTTO2WKL

pith:2025:BTTO2WKLHPLPSPYJT42LYU7NOH

not attested not anchored not stored refs pending

Cavity ringdown spectroscopy at 2 ${\mu}$m wavelength assisted by a comb-locked optical parametric oscillator

Antonio Castrillo, Eugenio Fasci, Livio Gianfrani, Muhammad Asad Khan, Stefania Gravina, Vittorio D'Agostino

arxiv:2505.23418 v1 · 2025-05-29 · physics.optics · physics.atom-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{BTTO2WKLHPLPSPYJT42LYU7NOH}

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	2026-07-05T11:12:01.430251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ce6ed594b3bd6f93f099f34bc53ed71e060ee41d993d2f2dc9e7a5ad558d242

Aliases

arxiv: 2505.23418 · arxiv_version: 2505.23418v1 · doi: 10.48550/arxiv.2505.23418 · pith_short_12: BTTO2WKLHPLP · pith_short_16: BTTO2WKLHPLPSPYJ · pith_short_8: BTTO2WKL

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/BTTO2WKLHPLPSPYJT42LYU7NOH \
  | 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: 0ce6ed594b3bd6f93f099f34bc53ed71e060ee41d993d2f2dc9e7a5ad558d242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a97aca3b67e2487211938e2bae8cbe1f5ef6178bda00422f5394f371014c6d53",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-05-29T13:07:54Z",
    "title_canon_sha256": "38e36ddaee688a6b7e02018d763bb0089ef7d8bc274f7b2ab0f7b1c805e352bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.23418",
    "kind": "arxiv",
    "version": 1
  }
}