Pith Number

pith:N2XENYV4

pith:2010:N2XENYV4F6WNFJJOGGMDEROSTH

not attested not anchored not stored refs pending

The fine structure constant and numerical alchemy

Giuseppe Dattoli

arxiv:1009.1711 v1 · 2010-09-09 · physics.gen-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{N2XENYV4F6WNFJJOGGMDEROSTH}

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	2026-05-18T04:41:06.415013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6eae46e2bc2facd2a52e31983245d299f0f0813903e9aef9f017c3521bb41853

Aliases

arxiv: 1009.1711 · arxiv_version: 1009.1711v1 · doi: 10.48550/arxiv.1009.1711 · pith_short_12: N2XENYV4F6WN · pith_short_16: N2XENYV4F6WNFJJO · pith_short_8: N2XENYV4

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/N2XENYV4F6WNFJJOGGMDEROSTH \
  | 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: 6eae46e2bc2facd2a52e31983245d299f0f0813903e9aef9f017c3521bb41853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7cca97188385d39c683f47f9f1aae59153d07fd975fb49627c12f0ab62d927d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2010-09-09T08:44:52Z",
    "title_canon_sha256": "d62776495aa0468a0e74026e3fc981f1015a6898e262244620b03bb6128a6a13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1711",
    "kind": "arxiv",
    "version": 1
  }
}