Pith Number

pith:HOQRJCFO

pith:2015:HOQRJCFO4FR2UZXZDHPL476GIO

not attested not anchored not stored refs pending

Nuclear clocks based on resonant excitation of gamma-transitions

Ekkehard Peik, Maxim Okhapkin

arxiv:1502.07322 v1 · 2015-02-25 · nucl-ex · 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{HOQRJCFO4FR2UZXZDHPL476GIO}

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	2026-05-18T01:46:13.566111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ba11488aee163aa66f919debe7fc64397318d8aa384525f3ff99691f581f7e6

Aliases

arxiv: 1502.07322 · arxiv_version: 1502.07322v1 · doi: 10.48550/arxiv.1502.07322 · pith_short_12: HOQRJCFO4FR2 · pith_short_16: HOQRJCFO4FR2UZXZ · pith_short_8: HOQRJCFO

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/HOQRJCFO4FR2UZXZDHPL476GIO \
  | 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: 3ba11488aee163aa66f919debe7fc64397318d8aa384525f3ff99691f581f7e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f8d439858e00d2d1c2d445ef24518169fa5766a13e4f21b7d97f7e9f27f9c46",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2015-02-25T20:04:54Z",
    "title_canon_sha256": "02785943e25930cd033d25da968b6bde4f73b16a204842127279243fa56fdc40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07322",
    "kind": "arxiv",
    "version": 1
  }
}