Pith Number

pith:P3OFMC7Q

pith:2005:P3OFMC7QTUSOYD5N4YLLUMNI6H

not attested not anchored not stored refs pending

Progress on indium and barium single ion optical frequency standards

Jeff A. Sherman, Norval Fortson, Steven Metz, Warren Nagourney, William Trimble

arxiv:physics/0504013 v2 · 2005-04-01 · 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{P3OFMC7QTUSOYD5N4YLLUMNI6H}

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	2026-05-18T00:58:04.962685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7edc560bf09d24ec0fade616ba31a8f1c9c433357c882cc43ac1d932cb988c04

Aliases

arxiv: physics/0504013 · arxiv_version: physics/0504013v2 · doi: 10.48550/arxiv.physics/0504013 · pith_short_12: P3OFMC7QTUSO · pith_short_16: P3OFMC7QTUSOYD5N · pith_short_8: P3OFMC7Q

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/P3OFMC7QTUSOYD5N4YLLUMNI6H \
  | 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: 7edc560bf09d24ec0fade616ba31a8f1c9c433357c882cc43ac1d932cb988c04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb359cb1c614bfb7f802d46e8170cec253a5192da6c796ffd809ea01f0adf8da",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2005-04-01T20:02:22Z",
    "title_canon_sha256": "ae7395d751d4b995a90e531dfdfa44964f11e8bbe32d3870f86ad6eaaa4e0622"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0504013",
    "kind": "arxiv",
    "version": 2
  }
}