Pith Number

pith:HK4EXT63

pith:2025:HK4EXT63UR7JWMNK7IWX4BOPDR

not attested not anchored not stored refs pending

The ultimate bounds to precision of atomic clock frequency measurement techniques

Matteo G. A. Paris, Salvatore Micalizio, Stefano Olivares

arxiv:2501.17693 v1 · 2025-01-29 · 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{HK4EXT63UR7JWMNK7IWX4BOPDR}

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	2026-05-17T23:39:18.226257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ab84bcfdba47e9b31aafa2d7e05cf1c522acf00d3693d2023fb137cd5b3ebe4

Aliases

arxiv: 2501.17693 · arxiv_version: 2501.17693v1 · doi: 10.48550/arxiv.2501.17693 · pith_short_12: HK4EXT63UR7J · pith_short_16: HK4EXT63UR7JWMNK · pith_short_8: HK4EXT63

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/HK4EXT63UR7JWMNK7IWX4BOPDR \
  | 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: 3ab84bcfdba47e9b31aafa2d7e05cf1c522acf00d3693d2023fb137cd5b3ebe4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "198017bbec0f2e3357966f5b6df8b2387a3825458e32d165331f6ff64ad033ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-01-29T14:59:45Z",
    "title_canon_sha256": "97d98d1410629e7e90e339ab3a2df8a933e211d499436006824276d8a9ca9752"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.17693",
    "kind": "arxiv",
    "version": 1
  }
}