Pith Number

pith:SFHXEX7E

pith:2009:SFHXEX7EL7Q43GXIHCT52PKR67

not attested not anchored not stored refs pending

Compensation of Field-Induced Frequency Shifts in 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:0903.3716 v2 · 2009-03-22 · 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{SFHXEX7EL7Q43GXIHCT52PKR67}

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	2026-05-18T02:14:26.755271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

914f725fe45fe1cd9ae838a7dd3d51f7f77a27f46b1dc2d261b76a0d57bf8b39

Aliases

arxiv: 0903.3716 · arxiv_version: 0903.3716v2 · doi: 10.48550/arxiv.0903.3716 · pith_short_12: SFHXEX7EL7Q4 · pith_short_16: SFHXEX7EL7Q43GXI · pith_short_8: SFHXEX7E

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/SFHXEX7EL7Q43GXIHCT52PKR67 \
  | 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: 914f725fe45fe1cd9ae838a7dd3d51f7f77a27f46b1dc2d261b76a0d57bf8b39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8111e3e7b227239face42f2349fb57d1794425c421e45f458cda1c369c128c4",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-03-22T11:44:51Z",
    "title_canon_sha256": "18bc57bf0e21e506f7df1d34e298ffb06706dc332588d789203e199ced2b90dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3716",
    "kind": "arxiv",
    "version": 2
  }
}