Pith Number

pith:E2FS4YJD

pith:2022:E2FS4YJDQ4MTKIEMFMWMDG6ELG

not attested not anchored not stored refs pending

Search for Variations of Fundamental Constants

Cosimo Bambi

arxiv:2210.11959 v1 · 2022-10-21 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E2FS4YJDQ4MTKIEMFMWMDG6ELG}

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	2026-07-05T08:42:28.364392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

268b2e6123871935208c2b2cc19bc4599094d0d83bf0a4148ff109dc0b7286b4

Aliases

arxiv: 2210.11959 · arxiv_version: 2210.11959v1 · doi: 10.48550/arxiv.2210.11959 · pith_short_12: E2FS4YJDQ4MT · pith_short_16: E2FS4YJDQ4MTKIEM · pith_short_8: E2FS4YJD

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/E2FS4YJDQ4MTKIEMFMWMDG6ELG \
  | 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: 268b2e6123871935208c2b2cc19bc4599094d0d83bf0a4148ff109dc0b7286b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "956d97e55a2299a3bdb3a75ff59d025b63cb3915b8874b386bf9ba33915496b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2022-10-21T13:33:56Z",
    "title_canon_sha256": "c7fd0b2c290dedb961fe39395aa66acc8b599cf21a961cf7b434e3dc74062196"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.11959",
    "kind": "arxiv",
    "version": 1
  }
}