Pith Number

pith:XVDLXNPM

pith:2004:XVDLXNPMWDCO55Z4BCKMRYPOPG

not attested not anchored not stored refs pending

QED Coupling from a 5-D Kaluza-Klein Theory

Andrea Marrocco, Giovanni Montani

arxiv:gr-qc/0402073 v1 · 2004-02-16 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XVDLXNPMWDCO55Z4BCKMRYPOPG}

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	2026-05-18T00:59:50.465498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd46bbb5ecb0c4eef73c0894c8e1ee79971df2db1512d64135178076338a95e0

Aliases

arxiv: gr-qc/0402073 · arxiv_version: gr-qc/0402073v1 · doi: 10.48550/arxiv.gr-qc/0402073 · pith_short_12: XVDLXNPMWDCO · pith_short_16: XVDLXNPMWDCO55Z4 · pith_short_8: XVDLXNPM

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/XVDLXNPMWDCO55Z4BCKMRYPOPG \
  | 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: bd46bbb5ecb0c4eef73c0894c8e1ee79971df2db1512d64135178076338a95e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e739781867d5e64215004276d4dba893caf52bcedf974dedfb32e82465e2b4e3",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-02-16T10:45:22Z",
    "title_canon_sha256": "13ce756adba8c4684d83091fe865f05d9db4b3938fdc93e9d70d495f5f4e9b9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0402073",
    "kind": "arxiv",
    "version": 1
  }
}