Pith Number

pith:X3G7EU4F

pith:2025:X3G7EU4F27Z55L4WUXQ6U6N4TE

not attested not anchored not stored refs pending

Probing curved spacetime with a distributed atomic processor clock

Igor Pikovski, Jacob P. Covey, Johannes Borregaard

arxiv:2502.12954 v1 · 2025-02-18 · quant-ph · gr-qc · 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{X3G7EU4F27Z55L4WUXQ6U6N4TE}

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.

Cited by

1 paper in Pith

Entangled quantum clocks as operational probes of spacetime curvature

Receipt and verification

First computed	2026-07-05T11:40:33.083445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

becdf25385d7f3deaf96a5e1ea79bc99049e482c576bd916f2cb55e2aaae01b7

Aliases

arxiv: 2502.12954 · arxiv_version: 2502.12954v1 · doi: 10.48550/arxiv.2502.12954 · pith_short_12: X3G7EU4F27Z5 · pith_short_16: X3G7EU4F27Z55L4W · pith_short_8: X3G7EU4F

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/X3G7EU4F27Z55L4WUXQ6U6N4TE \
  | 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: becdf25385d7f3deaf96a5e1ea79bc99049e482c576bd916f2cb55e2aaae01b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24226187d5104b998a7b4f74b4fa858c5a5ce0d5eec967f34f90f12d7276056f",
    "cross_cats_sorted": [
      "gr-qc",
      "physics.atom-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-02-18T15:36:37Z",
    "title_canon_sha256": "9b24efd494a593e0af835b551ece6d82cf73dec115148dae2b47d05a2988eeec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.12954",
    "kind": "arxiv",
    "version": 1
  }
}