Pith Number

pith:Z6CKQ633

pith:2016:Z6CKQ633PLQTZM2GRG6PM3WJD3

not attested not anchored not stored refs pending

Frequency ratio of Yb and Sr clocks with $5 \times 10^{-17}$ uncertainty at 150 s averaging time

Hidetoshi Katori, Ichiro Ushijima, Manoj Das, Masao Takamoto, Nils Nemitz, Noriaki Ohmae, Takuya Ohkubo

arxiv:1601.04582 v1 · 2016-01-18 · 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{Z6CKQ633PLQTZM2GRG6PM3WJD3}

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	2026-05-18T01:17:32.564355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf84a87b7b7ae13cb34689bcf66ec91edec87bfddd268ec783df226a9d7e3c7c

Aliases

arxiv: 1601.04582 · arxiv_version: 1601.04582v1 · doi: 10.48550/arxiv.1601.04582 · pith_short_12: Z6CKQ633PLQT · pith_short_16: Z6CKQ633PLQTZM2G · pith_short_8: Z6CKQ633

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/Z6CKQ633PLQTZM2GRG6PM3WJD3 \
  | 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: cf84a87b7b7ae13cb34689bcf66ec91edec87bfddd268ec783df226a9d7e3c7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e9eb3722df7dd2f6b35fe1295ebbce51829e68613068f0766d964a45b1d166b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2016-01-18T15:49:59Z",
    "title_canon_sha256": "97b1e3dd844ca5876b211f0c61f2c747de84894c4d4401ffc37762c07475de9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04582",
    "kind": "arxiv",
    "version": 1
  }
}