Pith Number

pith:BNZL72JJ

pith:2010:BNZL72JJPRDUK4DKA5XJ5EMBSC

not attested not anchored not stored refs pending

Sensitivity of the energy levels of singly ionized cobalt to the variation of the fine structure constant

V. A. Dzuba, V. V. Flambaum

arxiv:1002.1750 v1 · 2010-02-09 · astro-ph.CO · astro-ph.SR · 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{BNZL72JJPRDUK4DKA5XJ5EMBSC}

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	2026-05-18T02:09:11.058967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b72bfe9297c4745706a076e9e918190bdb98754284ca793566a62775cb11171

Aliases

arxiv: 1002.1750 · arxiv_version: 1002.1750v1 · doi: 10.48550/arxiv.1002.1750 · pith_short_12: BNZL72JJPRDU · pith_short_16: BNZL72JJPRDUK4DK · pith_short_8: BNZL72JJ

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/BNZL72JJPRDUK4DKA5XJ5EMBSC \
  | 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: 0b72bfe9297c4745706a076e9e918190bdb98754284ca793566a62775cb11171

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86ecd2605e3da0ed537e32dde98b8262e71a8cb2471a2db4aedc6ac39386dc33",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-09T01:17:23Z",
    "title_canon_sha256": "a3e35794bfa33ed76b30a828a039ebfbb1502990bdd62050982b7686da022cec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1750",
    "kind": "arxiv",
    "version": 1
  }
}