Pith Number

pith:DQJ45IQX

pith:2026:DQJ45IQXBQF6QBURIG5FXQDVQV

not attested not anchored not stored refs pending

Optically Derived Radio-Frequency Benchmark in Methanol: A Sub-kHz Reference for Astrophysical Tests of Fundamental Physics

Alexandr S. Bogomolov, Alexis Libert, Arth\'emise Altman, Boy Lankhaar, Cl\'ement Lauzin, Erik Dierikx, Frank M. J. Cozijn, Isabelle Kleiner, Jeroen C. J. Koelemeij, Simon Collignon, Wim Ubachs

arxiv:2607.12533 v1 · 2026-07-14 · physics.atom-ph · quant-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{DQJ45IQXBQF6QBURIG5FXQDVQV}

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	2026-07-15T01:21:40.419577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c13cea2170c0be8069141ba5bc07585739ce64abaffdb887ad449f9078e8b16

Aliases

arxiv: 2607.12533 · arxiv_version: 2607.12533v1 · doi: 10.48550/arxiv.2607.12533 · pith_short_12: DQJ45IQXBQF6 · pith_short_16: DQJ45IQXBQF6QBUR · pith_short_8: DQJ45IQX

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/DQJ45IQXBQF6QBURIG5FXQDVQV \
  | 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: 1c13cea2170c0be8069141ba5bc07585739ce64abaffdb887ad449f9078e8b16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b4fb56825ac364c639ffe1f6bf5b574de82b27726a6503deef325fa6058503f",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2026-07-14T09:06:42Z",
    "title_canon_sha256": "b450b8e625b1e1c3667db86a9ec0c64f0e2160a186649b3bdf7d3c635bcd8694"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.12533",
    "kind": "arxiv",
    "version": 1
  }
}