Pith Number

pith:L4VM66CK

pith:2025:L4VM66CKXSYOSISWVIRULHIR72

not attested not anchored not stored refs pending

The fine structure constant: a review of measurement results and possible space-time variations

K. A. Bronnikov, V. D. Ivashchuk, V. V. Khruschov

arxiv:2506.18328 v1 · 2025-06-23 · hep-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{L4VM66CKXSYOSISWVIRULHIR72}

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	2026-07-05T11:25:48.806508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f2acf784abcb0e92256aa23459d11fea4d64b0e639e1561c52b36a85e1b0942

Aliases

arxiv: 2506.18328 · arxiv_version: 2506.18328v1 · doi: 10.48550/arxiv.2506.18328 · pith_short_12: L4VM66CKXSYO · pith_short_16: L4VM66CKXSYOSISW · pith_short_8: L4VM66CK

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/L4VM66CKXSYOSISWVIRULHIR72 \
  | 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: 5f2acf784abcb0e92256aa23459d11fea4d64b0e639e1561c52b36a85e1b0942

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc9d673c888d3ad8e0330297eb65c10a9a74f34e961651b02700537444a2bfae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2025-06-23T06:21:07Z",
    "title_canon_sha256": "54f8e9487b4d26e2ef3f1cc3213d1528f453b3729add10ae9c5fdc09acfd7b2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.18328",
    "kind": "arxiv",
    "version": 1
  }
}