Pith Number

pith:EYWMTESF

pith:2009:EYWMTESF7NS6KLL3Q3BUCUJOLG

not attested not anchored not stored refs pending

Minimizing the Dick Effect in an Optical Lattice Clock

Jerome Lodewyck, Philip G. Westergaard, Pierre Lemonde

arxiv:0909.0909 v2 · 2009-09-04 · 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{EYWMTESF7NS6KLL3Q3BUCUJOLG}

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	2026-05-18T03:18:27.023696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

262cc99245fb65e52d7b86c341512e598ddd085e4f4767e520748b6580450572

Aliases

arxiv: 0909.0909 · arxiv_version: 0909.0909v2 · doi: 10.48550/arxiv.0909.0909 · pith_short_12: EYWMTESF7NS6 · pith_short_16: EYWMTESF7NS6KLL3 · pith_short_8: EYWMTESF

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/EYWMTESF7NS6KLL3Q3BUCUJOLG \
  | 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: 262cc99245fb65e52d7b86c341512e598ddd085e4f4767e520748b6580450572

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc49252c3bc09006b637f0359aa1626fb528d03e5cb63c2deaf19c7213ddd881",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2009-09-04T15:24:27Z",
    "title_canon_sha256": "7967f062c94d2002312b81f97805711411a045eea2654432576ab8be4471a6d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0909",
    "kind": "arxiv",
    "version": 2
  }
}