Pith Number

pith:FYBUP3RU

pith:2008:FYBUP3RUS2AWYMPXZQ6E6D3ZOV

not attested not anchored not stored refs pending

Measuring the frequency of a Sr optical lattice clock using a 120-km coherent optical transfer

A. Takamizawa, F.-L. Hong, H. Inaba, H. Katori, K. Nakagawa, K. Ueda, K. Watabe, M. Amemiya, M. Imae, M. Musha, M. Takamoto, S. Yanagimachi, T. Ikegami, Y. Fujii

arxiv:0811.1816 v1 · 2008-11-12 · 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{FYBUP3RUS2AWYMPXZQ6E6D3ZOV}

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	2026-07-04T17:13:37.105690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e0347ee3496816c31f7cc3c4f0f79754b2fdb262fb8301cfc2eaea8e72b473a

Aliases

arxiv: 0811.1816 · arxiv_version: 0811.1816v1 · doi: 10.48550/arxiv.0811.1816 · pith_short_12: FYBUP3RUS2AW · pith_short_16: FYBUP3RUS2AWYMPX · pith_short_8: FYBUP3RU

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/FYBUP3RUS2AWYMPXZQ6E6D3ZOV \
  | 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: 2e0347ee3496816c31f7cc3c4f0f79754b2fdb262fb8301cfc2eaea8e72b473a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a17380e76777b97536ab5ed5a34becc1c4bfb8df63b1503cb7f6964a1289cb5",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2008-11-12T05:29:52Z",
    "title_canon_sha256": "b3574da801cdbacb142d4c4388ebebe3112145e3690f7bd195a13acd4a0dd00c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.1816",
    "kind": "arxiv",
    "version": 1
  }
}