Pith Number

pith:J5WQOPI4

pith:2018:J5WQOPI4XJUBNNTDWXP3POSVFJ

not attested not anchored not stored refs pending

Towards a 229Th-based nuclear clock

Benedict Seiferle, Lars von der Wense, Peter G. Thirolf

arxiv:1811.03889 v2 · 2018-11-09 · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J5WQOPI4XJUBNNTDWXP3POSVFJ}

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	2026-05-18T00:01:06.380978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f6d073d1cba6816b663b5dfb7ba552a5a07fbf143767f6d3c0ac2f6c3b99c74

Aliases

arxiv: 1811.03889 · arxiv_version: 1811.03889v2 · doi: 10.48550/arxiv.1811.03889 · pith_short_12: J5WQOPI4XJUB · pith_short_16: J5WQOPI4XJUBNNTD · pith_short_8: J5WQOPI4

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/J5WQOPI4XJUBNNTDWXP3POSVFJ \
  | 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: 4f6d073d1cba6816b663b5dfb7ba552a5a07fbf143767f6d3c0ac2f6c3b99c74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04b217144e1d51d17052aded6bca2b96189379eca09bb0242907c48913f7a649",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2018-11-09T13:19:09Z",
    "title_canon_sha256": "23762cfacb5bbe6e5d0c2a8ddf0015ff5e1df898861837a1fd82a5d5685755d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03889",
    "kind": "arxiv",
    "version": 2
  }
}