Pith Number

pith:R2VJLZXV

pith:2012:R2VJLZXVJ7SV5WC7SCSIVFWU2U

not attested not anchored not stored refs pending

Optical transitions in highly-charged californium ions with high sensitivity to variation of the fine-structure constant

A. Ong, J. C. Berengut, V. A. Dzuba, V. V. Flambaum

arxiv:1204.0603 v1 · 2012-04-03 · 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{R2VJLZXVJ7SV5WC7SCSIVFWU2U}

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	2026-05-18T03:45:55.366217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8eaa95e6f54fe55ed85f90a48a96d4d5090fff7de42136bcfc34d1c77dcc7ce6

Aliases

arxiv: 1204.0603 · arxiv_version: 1204.0603v1 · doi: 10.48550/arxiv.1204.0603 · pith_short_12: R2VJLZXVJ7SV · pith_short_16: R2VJLZXVJ7SV5WC7 · pith_short_8: R2VJLZXV

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/R2VJLZXVJ7SV5WC7SCSIVFWU2U \
  | 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: 8eaa95e6f54fe55ed85f90a48a96d4d5090fff7de42136bcfc34d1c77dcc7ce6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abb8346760a055a03f9e2808bfdd3f501528b94808dc3c0d3ad30c76035d017b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2012-04-03T05:58:24Z",
    "title_canon_sha256": "46f97d704aac412476ccee6870c0b67225997f2b252a11cf877aedce51f17632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0603",
    "kind": "arxiv",
    "version": 1
  }
}