Pith Number

pith:CPDKTHQ2

pith:2022:CPDKTHQ2UPWP5EPKFVSYDDO443

not attested not anchored not stored refs pending

Using ultra-high energy cosmic rays and air showers to test Lorentz invariance within modified Maxwell theory

Markus Risse

arxiv:2208.08747 v1 · 2022-08-18 · hep-ph · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CPDKTHQ2UPWP5EPKFVSYDDO443}

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.

Cited by

1 paper in Pith

Vacuum Cherenkov radiation for nonminimal dimension-5 Lorentz violation

Receipt and verification

First computed	2026-07-05T04:49:37.426057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13c6a99e1aa3ecfe91ea2d65818ddce6f6ee2c2189ab86d62ee0b13f34b9991d

Aliases

arxiv: 2208.08747 · arxiv_version: 2208.08747v1 · doi: 10.48550/arxiv.2208.08747 · pith_short_12: CPDKTHQ2UPWP · pith_short_16: CPDKTHQ2UPWP5EPK · pith_short_8: CPDKTHQ2

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/CPDKTHQ2UPWP5EPKFVSYDDO443 \
  | 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: 13c6a99e1aa3ecfe91ea2d65818ddce6f6ee2c2189ab86d62ee0b13f34b9991d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5613db59f330539a5602119d487a507e96b4173f45732fe879e0eb0587f525f8",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2022-08-18T10:05:29Z",
    "title_canon_sha256": "52492a712c0876436eeb85443de273f1b9529edefad84c198115faba63dc2855"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.08747",
    "kind": "arxiv",
    "version": 1
  }
}