Pith Number

pith:HPQXTUZE

pith:2011:HPQXTUZELYV6PHM4OQ6LILEZ4Q

not attested not anchored not stored refs pending

Stability limits of an optical frequency standard based on free Ca atoms

C. W. Oates, J. A. Sherman

arxiv:1108.3293 v1 · 2011-08-16 · 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{HPQXTUZELYV6PHM4OQ6LILEZ4Q}

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	2026-05-18T04:15:27.587567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3be179d3245e2be79d9c743cb42c99e4366bbbe082b7d7620b1b69af0dc01bf9

Aliases

arxiv: 1108.3293 · arxiv_version: 1108.3293v1 · doi: 10.48550/arxiv.1108.3293 · pith_short_12: HPQXTUZELYV6 · pith_short_16: HPQXTUZELYV6PHM4 · pith_short_8: HPQXTUZE

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/HPQXTUZELYV6PHM4OQ6LILEZ4Q \
  | 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: 3be179d3245e2be79d9c743cb42c99e4366bbbe082b7d7620b1b69af0dc01bf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8928ae49f2991ca957515deab72397a9d3bf9bb156e6eaa05b5374159514de38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2011-08-16T17:35:09Z",
    "title_canon_sha256": "755c1e7f21fd8c797a008a89783209555a9e8657783a3a93d3fe20f8c807c2b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3293",
    "kind": "arxiv",
    "version": 1
  }
}