Pith Number

pith:XI5AVAVN

pith:2016:XI5AVAVNEBWODJQJEKUBDHJRXA

not attested not anchored not stored refs pending

Ultra-stable optical clock with two cold-atom ensembles

A. D. Ludlow, C. W. Oates, D. Nicolodi, G. Milani, J. A. Sherman, K. Beloy, M. Schioppo, N. B. Phillips, N. Hinkley, R. C. Brown, R. J. Fasano, T. H. Yoon, W. F. McGrew

arxiv:1607.06867 v1 · 2016-07-23 · physics.atom-ph · physics.optics

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T00:52:25.396438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba3a0a82ad206ce1a60922a8119d31b807da5076dcc7d3a482952d1ff1fe4c1e

Aliases

arxiv: 1607.06867 · arxiv_version: 1607.06867v1 · doi: 10.48550/arxiv.1607.06867 · pith_short_12: XI5AVAVNEBWO · pith_short_16: XI5AVAVNEBWODJQJ · pith_short_8: XI5AVAVN

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/XI5AVAVNEBWODJQJEKUBDHJRXA \
  | 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: ba3a0a82ad206ce1a60922a8119d31b807da5076dcc7d3a482952d1ff1fe4c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "799d17c2aa147ea40e93bbd101a0d05e9c085c08ae225835bcfa3eb04e48a554",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2016-07-23T00:40:15Z",
    "title_canon_sha256": "3fd5cd62ae645ac384d21ecb49c229477f263a20dfef95393f5b29d9dad858ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.06867",
    "kind": "arxiv",
    "version": 1
  }
}