Pith Number

pith:74UYYYAP

pith:2025:74UYYYAPQGMQYH47ZAPEX7LQLT

not attested not anchored not stored refs pending

Portable Laser-Pumped Rb Atomic Clock with Digital Circuits

Jun Ruan, Peter Yun, Qiang Hao, Shaojie Yang, Shougang Zhang

arxiv:2508.12437 v2 · 2025-08-17 · 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{74UYYYAPQGMQYH47ZAPEX7LQLT}

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	2026-07-05T11:55:42.655005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff298c600f81990c1f9fc81e4bfd705ccd1360a6ef8ea6d71f2fb3ebd30114e3

Aliases

arxiv: 2508.12437 · arxiv_version: 2508.12437v2 · doi: 10.48550/arxiv.2508.12437 · pith_short_12: 74UYYYAPQGMQ · pith_short_16: 74UYYYAPQGMQYH47 · pith_short_8: 74UYYYAP

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/74UYYYAPQGMQYH47ZAPEX7LQLT \
  | 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: ff298c600f81990c1f9fc81e4bfd705ccd1360a6ef8ea6d71f2fb3ebd30114e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4389b7835b27d93c46063a8ed4ac105e121ab8f59c603d2ab710f71904fc0a6b",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2025-08-17T17:09:30Z",
    "title_canon_sha256": "6c47f5152952227d6c166f3e9f34e59329f883eee458aa3e75e29d97928c4377"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.12437",
    "kind": "arxiv",
    "version": 2
  }
}