Pith Number

pith:RWPKMDPM

pith:2015:RWPKMDPMONAJHR7ZQJVHND64SF

not attested not anchored not stored refs pending

Vacuum birefringence in strong inhomogeneous electromagnetic fields

Felix Karbstein, Holger Gies, Maria Reuter, Matt Zepf

arxiv:1507.01084 v1 · 2015-07-04 · hep-ph · hep-th · 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{RWPKMDPMONAJHR7ZQJVHND64SF}

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	2026-05-18T01:28:04.320692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d9ea60dec734093c7f9826a768fdc9152975a2d32973b66414b934423d217df

Aliases

arxiv: 1507.01084 · arxiv_version: 1507.01084v1 · doi: 10.48550/arxiv.1507.01084 · pith_short_12: RWPKMDPMONAJ · pith_short_16: RWPKMDPMONAJHR7Z · pith_short_8: RWPKMDPM

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/RWPKMDPMONAJHR7ZQJVHND64SF \
  | 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: 8d9ea60dec734093c7f9826a768fdc9152975a2d32973b66414b934423d217df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afc501044c4e4d750fc2543da1c1e4a30a4bfe65f6687ee7c619860b9abd5a99",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2015-07-04T09:05:09Z",
    "title_canon_sha256": "dc35bd34432e5aa7ba0e28c64adffef88918e974de70109e6dfa585a43e11b8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01084",
    "kind": "arxiv",
    "version": 1
  }
}