Pith Number

pith:PO6Q727D

pith:2019:PO6Q727DX5QEY4OA2RSV6IBLLD

not attested not anchored not stored refs pending

Demonstration of a free space rubidium atomic clock with noise below the quantum projection limit

Benjamin K. Malia, Juli\'an Mart\'inez-Rinc\'on, Mark A. Kasevich, Onur Hosten, Yunfan Wu

arxiv:1912.10218 v1 · 2019-12-21 · quant-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{PO6Q727DX5QEY4OA2RSV6IBLLD}

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	2026-07-05T01:22:39.367438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bbd0febe3bf604c71c0d4655f202b58cf0e724691809186697702af7f802aac

Aliases

arxiv: 1912.10218 · arxiv_version: 1912.10218v1 · doi: 10.48550/arxiv.1912.10218 · pith_short_12: PO6Q727DX5QE · pith_short_16: PO6Q727DX5QEY4OA · pith_short_8: PO6Q727D

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/PO6Q727DX5QEY4OA2RSV6IBLLD \
  | 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: 7bbd0febe3bf604c71c0d4655f202b58cf0e724691809186697702af7f802aac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59387e10c1bd7990d08ae8536c01a37b5a7bac5898f2a70c8d43780b96062d86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-12-21T07:49:57Z",
    "title_canon_sha256": "0c7fad3661a98fc33435d60ffd0ca992e9b7bebfac9abb55591a6840c1e3a10e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.10218",
    "kind": "arxiv",
    "version": 1
  }
}