Pith Number

pith:2PNUJH66

pith:2025:2PNUJH66SB3UAFDSGYYZ23ABCM

not attested not anchored not stored refs pending

Direct measurement of the 3P0 clock state natural lifetime in 87Sr

Dhruva Ganapathy, Jonathan Dolde, Kyle Beloy, Shimon Kolkowitz, Shuo Ma, Xin Zheng

arxiv:2505.06440 v2 · 2025-05-09 · 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{2PNUJH66SB3UAFDSGYYZ23ABCM}

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	2026-07-05T11:34:08.169222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3db449fde907740147236319d6c01132895bd51b2bf4923f0fc696043a98ab5

Aliases

arxiv: 2505.06440 · arxiv_version: 2505.06440v2 · doi: 10.48550/arxiv.2505.06440 · pith_short_12: 2PNUJH66SB3U · pith_short_16: 2PNUJH66SB3UAFDS · pith_short_8: 2PNUJH66

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/2PNUJH66SB3UAFDSGYYZ23ABCM \
  | 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: d3db449fde907740147236319d6c01132895bd51b2bf4923f0fc696043a98ab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca65df489108d9ce2a3a1fa29605ad973bada647f91465f9b7b1c4ba2cc0778e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2025-05-09T21:15:41Z",
    "title_canon_sha256": "b2a991b9c81439e1852eec74857df6bfa0c1607991f12ac60e45486bc9123a19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.06440",
    "kind": "arxiv",
    "version": 2
  }
}