Pith Number

pith:5QOCFXGG

pith:2008:5QOCFXGGTGJUFRQFDVZ4XZMBQP

not attested not anchored not stored refs pending

Search for variation of the fundamental constants in atomic, molecular and nuclear spectra

V. A. Dzuba, V. V. Flambaum

arxiv:0805.0462 v2 · 2008-05-05 · 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{5QOCFXGGTGJUFRQFDVZ4XZMBQP}

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	2026-05-18T02:15:53.127724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec1c22dcc6999342c6051d73cbe58183c93d391b7f7a2201c08d2dda0a1c194e

Aliases

arxiv: 0805.0462 · arxiv_version: 0805.0462v2 · doi: 10.48550/arxiv.0805.0462 · pith_short_12: 5QOCFXGGTGJU · pith_short_16: 5QOCFXGGTGJUFRQF · pith_short_8: 5QOCFXGG

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/5QOCFXGGTGJUFRQFDVZ4XZMBQP \
  | 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: ec1c22dcc6999342c6051d73cbe58183c93d391b7f7a2201c08d2dda0a1c194e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9ba21a1e97f2cb1a77c2d5687d4292c3564738807f06be9c7ba90b6b31cb119",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2008-05-05T05:04:16Z",
    "title_canon_sha256": "f12f0bdada95affa3a8998ebb373a7df9b17f5c49d70b12f8c4b461e5b241355"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.0462",
    "kind": "arxiv",
    "version": 2
  }
}