Pith Number

pith:YFRGBTXF

pith:2015:YFRGBTXFCXRIJ2D45BW7SEVCQD

not attested not anchored not stored refs pending

Quantum electrodynamics $m \alpha^6$ and $m \alpha^7 \ln \alpha$ corrections to the fine splitting in Li and Be$^+$

Krzysztof Pachucki, Mariusz Puchalski

arxiv:1506.02462 v1 · 2015-06-08 · 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{YFRGBTXFCXRIJ2D45BW7SEVCQD}

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	2026-05-18T01:55:51.041394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c16260cee515e284e87ce86df912a280d99762c20d52b4e6a1960d7a3125cbdb

Aliases

arxiv: 1506.02462 · arxiv_version: 1506.02462v1 · doi: 10.48550/arxiv.1506.02462 · pith_short_12: YFRGBTXFCXRI · pith_short_16: YFRGBTXFCXRIJ2D4 · pith_short_8: YFRGBTXF

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/YFRGBTXFCXRIJ2D45BW7SEVCQD \
  | 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: c16260cee515e284e87ce86df912a280d99762c20d52b4e6a1960d7a3125cbdb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f52a387361299dc57e9ee77a01b422e355b60d49f7a9481c4bb829a79289534a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-06-08T12:22:56Z",
    "title_canon_sha256": "068f1005b604cc6c8ed7a1cf99872e7da2df080a4e9697e63e0ca1152ed99697"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02462",
    "kind": "arxiv",
    "version": 1
  }
}