Pith Number

pith:ZNEPQLAW

pith:2022:ZNEPQLAW3EOGWPQ7QILSPEAZJ6

not attested not anchored not stored refs pending

Direct accessibility of the fundamental constants governing light-by-light scattering

Daniel Ullmann, Elena A. Mosman, Felix Karbstein, Matt Zepf

arxiv:2207.09866 v1 · 2022-07-20 · hep-ph · quant-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{ZNEPQLAW3EOGWPQ7QILSPEAZJ6}

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

Coherent enhancement of QED cross-sections in electromagnetic backgrounds

Receipt and verification

First computed	2026-07-05T04:45:27.332946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb48f82c16d91c6b3e1f82172790194f9138a83f603f1ff0f510d2fa3fb25fbf

Aliases

arxiv: 2207.09866 · arxiv_version: 2207.09866v1 · doi: 10.48550/arxiv.2207.09866 · pith_short_12: ZNEPQLAW3EOG · pith_short_16: ZNEPQLAW3EOGWPQ7 · pith_short_8: ZNEPQLAW

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/ZNEPQLAW3EOGWPQ7QILSPEAZJ6 \
  | 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: cb48f82c16d91c6b3e1f82172790194f9138a83f603f1ff0f510d2fa3fb25fbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bcce0a4a8b710c8c1882a7dfbace573eeb34f21c70ebdd1d83baf238ccf5a78",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2022-07-20T12:58:36Z",
    "title_canon_sha256": "64181e958eb3de9ebabca5ba80c0439eb071ebd7fc568e15d0efc9635b29c297"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.09866",
    "kind": "arxiv",
    "version": 1
  }
}