Pith Number

pith:XTRXSZLS

pith:2009:XTRXSZLSHHUOKFLUY44VSB3BL2

not attested not anchored not stored refs pending

Hyper-Ramsey Spectroscopy of Optical Clock Transitions

A. D. Ludlow, A. V. Taichenachev, Ch. Lisdat, C. W. Oates, F. Riehle, N. D. Lemke, U. Sterr, V. I. Yudin, Z. W. Barber

arxiv:0910.5948 v5 · 2009-10-30 · physics.atom-ph · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XTRXSZLSHHUOKFLUY44VSB3BL2}

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	2026-05-18T02:24:46.525362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bce379657239e8e51574c7395907615e947f38d9a10bfad230047cc12802acdc

Aliases

arxiv: 0910.5948 · arxiv_version: 0910.5948v5 · doi: 10.48550/arxiv.0910.5948 · pith_short_12: XTRXSZLSHHUO · pith_short_16: XTRXSZLSHHUOKFLU · pith_short_8: XTRXSZLS

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/XTRXSZLSHHUOKFLUY44VSB3BL2 \
  | 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: bce379657239e8e51574c7395907615e947f38d9a10bfad230047cc12802acdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b239358599716890e807ba1073b60183dfdc74891da8e0032c3e6704be0badfb",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2009-10-30T19:13:15Z",
    "title_canon_sha256": "b7ceb7ca82127a55c928c496544bc249976c92e16622046e501ae71e6cdad09c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5948",
    "kind": "arxiv",
    "version": 5
  }
}