Pith Number

pith:IFJK5U4E

pith:2015:IFJK5U4EEBSA7LGLAZEKLX2MFT

not attested not anchored not stored refs pending

Frequency ratios of Sr, Yb and Hg based optical lattice clocks and their applications

Atsushi Yamaguchi, Hidetoshi Katori, Ichiro Ushijima, Kazuhiro Yamanaka, Manoj Das, Masao Takamoto, Nils Nemitz, Noriaki Ohmae, Takuya Ohkubo, Tetsushi Takano, Tomoya Akatsuka

arxiv:1505.03207 v1 · 2015-05-13 · 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{IFJK5U4EEBSA7LGLAZEKLX2MFT}

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	2026-05-18T02:12:10.131631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4152aed38420640faccb0648a5df4c2cc0edae5bcda17a2a2cb68725729efb57

Aliases

arxiv: 1505.03207 · arxiv_version: 1505.03207v1 · doi: 10.48550/arxiv.1505.03207 · pith_short_12: IFJK5U4EEBSA · pith_short_16: IFJK5U4EEBSA7LGL · pith_short_8: IFJK5U4E

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/IFJK5U4EEBSA7LGLAZEKLX2MFT \
  | 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: 4152aed38420640faccb0648a5df4c2cc0edae5bcda17a2a2cb68725729efb57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be8e4a00947279274a2ab1c924df2c183ce4c14dd2edaa3997a8b7cc3c7f08d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-05-13T01:13:44Z",
    "title_canon_sha256": "d25e0be9e4f6b816745268ca5e29b3a467c73c0e9a162e1f0a283d546f336811"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03207",
    "kind": "arxiv",
    "version": 1
  }
}