Pith Number

pith:U5JJGJSX

pith:2015:U5JJGJSXUUZTLTP2GRM46EPJ2X

not attested not anchored not stored refs pending

Testing non-linear vacuum electrodynamics with Michelson interferometry

Claus L\"ammerzahl, Gerold O. Schellstede, Volker Perlick

arxiv:1504.03159 v2 · 2015-04-13 · 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{U5JJGJSXUUZTLTP2GRM46EPJ2X}

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	2026-05-18T01:29:31.685324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a752932657a53335cdfa3459cf11e9d5c379dfe953d0d572bb720e70d8b523b0

Aliases

arxiv: 1504.03159 · arxiv_version: 1504.03159v2 · doi: 10.48550/arxiv.1504.03159 · pith_short_12: U5JJGJSXUUZT · pith_short_16: U5JJGJSXUUZTLTP2 · pith_short_8: U5JJGJSX

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/U5JJGJSXUUZTLTP2GRM46EPJ2X \
  | 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: a752932657a53335cdfa3459cf11e9d5c379dfe953d0d572bb720e70d8b523b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c32439dcb9d51144b1b7d2fb334f885b02c85e87d839f92ec3866290a5fdda6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-13T13:00:42Z",
    "title_canon_sha256": "8eb6df5d44af388a699705e2b22880b442764a1c190ef7a39ffd79789551f52a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03159",
    "kind": "arxiv",
    "version": 2
  }
}