Pith Number

pith:KKXGFFNX

pith:2012:KKXGFFNXUJWB3DR4AYEGPBXZAI

not attested not anchored not stored refs pending

Shifts of optical frequency references based on spectral-hole burning in Eu:Y2SiO5

David R. Leibrandt, Michael J. Thorpe, Till Rosenband

arxiv:1210.4458 v2 · 2012-10-16 · 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{KKXGFFNXUJWB3DR4AYEGPBXZAI}

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	2026-05-18T01:53:54.251017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52ae6295b7a26c1d8e3c06086786f9021421f0df8f03f023cc6c5f77333895b5

Aliases

arxiv: 1210.4458 · arxiv_version: 1210.4458v2 · doi: 10.48550/arxiv.1210.4458 · pith_short_12: KKXGFFNXUJWB · pith_short_16: KKXGFFNXUJWB3DR4 · pith_short_8: KKXGFFNX

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/KKXGFFNXUJWB3DR4AYEGPBXZAI \
  | 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: 52ae6295b7a26c1d8e3c06086786f9021421f0df8f03f023cc6c5f77333895b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "172308b8a5175bb3f34055a7910ddc63949c356993642d070974b1ef51498a84",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2012-10-16T15:52:13Z",
    "title_canon_sha256": "3f31fbb221d8b7eaa886f2c520d10738cf193471f1f606d4ccb34c73bde99052"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4458",
    "kind": "arxiv",
    "version": 2
  }
}