Pith Number

pith:UMOQQ642

pith:2010:UMOQQ642VQVF2KMGOPAHUX33XB

not attested not anchored not stored refs pending

Helium fine structure theory for determination of \alpha

Krzysztof Pachucki, Vladimir A. Yerokhin

arxiv:1011.2467 v2 · 2010-11-10 · 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{UMOQQ642VQVF2KMGOPAHUX33XB}

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	2026-05-18T02:04:49.186692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a31d087b9aac2a5d298673c07a5f7bb84707069f8b9b50af44311cd0c7d02b8c

Aliases

arxiv: 1011.2467 · arxiv_version: 1011.2467v2 · doi: 10.48550/arxiv.1011.2467 · pith_short_12: UMOQQ642VQVF · pith_short_16: UMOQQ642VQVF2KMG · pith_short_8: UMOQQ642

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/UMOQQ642VQVF2KMGOPAHUX33XB \
  | 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: a31d087b9aac2a5d298673c07a5f7bb84707069f8b9b50af44311cd0c7d02b8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f069c37fe19bfb918432d2632cedb181bb32c03e214c5ff8e6de000dc631c995",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2010-11-10T19:43:11Z",
    "title_canon_sha256": "d207b6c14abc6143219c040b02bf1698fe9c231be98bcb7a489539d6faf90dfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2467",
    "kind": "arxiv",
    "version": 2
  }
}