Pith Number

pith:7URMXWHT

pith:2019:7URMXWHTH533JITEXGBXEZWULL

not attested not anchored not stored refs pending

Reducible contributions to quantum electrodynamics in external fields

Anton Ilderton, James P. Edwards, Naser Ahmadiniaz

arxiv:1901.09416 v2 · 2019-01-27 · hep-th · hep-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{7URMXWHTH533JITEXGBXEZWULL}

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	2026-05-17T23:46:29.048163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd22cbd8f33f77b4a264b9837266d45af64f680bb1de999cda2d6052a7e287b0

Aliases

arxiv: 1901.09416 · arxiv_version: 1901.09416v2 · doi: 10.48550/arxiv.1901.09416 · pith_short_12: 7URMXWHTH533 · pith_short_16: 7URMXWHTH533JITE · pith_short_8: 7URMXWHT

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/7URMXWHTH533JITEXGBXEZWULL \
  | 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: fd22cbd8f33f77b4a264b9837266d45af64f680bb1de999cda2d6052a7e287b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5800678fb5dca6ca12b8abec0e40eca81a60b152a0bafa4b2c07317a02d6ff1d",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-01-27T18:25:56Z",
    "title_canon_sha256": "3d48754e3cc3cdc5076f7181dfcfb25d7c21006b06e23176a58105d1ccb5acb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09416",
    "kind": "arxiv",
    "version": 2
  }
}