Pith Number

pith:SPIMIVKE

pith:2014:SPIMIVKEEBC6XGZLNDMN7MFLTL

not attested not anchored not stored refs pending

Ground state hyperfine splitting in the Be$^+$ ion

Krzysztof Pachucki, Mariusz Puchalski

arxiv:1402.4573 v2 · 2014-02-19 · 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{SPIMIVKEEBC6XGZLNDMN7MFLTL}

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	2026-05-18T01:44:36.477408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93d0c455442045eb9b2b68d8dfb0ab9adf76b6bc98601166df006f5fc1d5df16

Aliases

arxiv: 1402.4573 · arxiv_version: 1402.4573v2 · doi: 10.48550/arxiv.1402.4573 · pith_short_12: SPIMIVKEEBC6 · pith_short_16: SPIMIVKEEBC6XGZL · pith_short_8: SPIMIVKE

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/SPIMIVKEEBC6XGZLNDMN7MFLTL \
  | 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: 93d0c455442045eb9b2b68d8dfb0ab9adf76b6bc98601166df006f5fc1d5df16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b21f445f000782d4d7fa1c6a4e71a62a3ac58423b878f4077ed0c43d575b2ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2014-02-19T07:34:36Z",
    "title_canon_sha256": "d345db7d8d20eceb2e6d4ee70b2bf787d9d5c86cfe76230d853f4ce3733c55a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.4573",
    "kind": "arxiv",
    "version": 2
  }
}