Pith Number

pith:OLPL7FQG

pith:2009:OLPL7FQGKHJHLXRVF5LEGWZ62C

not attested not anchored not stored refs pending

Fourth Lepton Family is Natural in Technicolor

Francesco Sannino, Isabella Masina, Mads T. Frandsen

arxiv:0905.1331 v1 · 2009-05-10 · 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{OLPL7FQGKHJHLXRVF5LEGWZ62C}

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	2026-05-18T02:13:46.273455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72debf960651d275de352f56435b3ed09d66a842a681d727b5360b589a082332

Aliases

arxiv: 0905.1331 · arxiv_version: 0905.1331v1 · doi: 10.48550/arxiv.0905.1331 · pith_short_12: OLPL7FQGKHJH · pith_short_16: OLPL7FQGKHJHLXRV · pith_short_8: OLPL7FQG

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/OLPL7FQGKHJHLXRVF5LEGWZ62C \
  | 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: 72debf960651d275de352f56435b3ed09d66a842a681d727b5360b589a082332

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "456eaa0a7d2dc0e068a925ff42bcda3f416ba23b8ac4905dbd519ef54a980339",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2009-05-10T14:57:13Z",
    "title_canon_sha256": "e26c3d5a355adb4a9e00810ef604b6941ef4f6781f5353713e36390ad3dc58b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1331",
    "kind": "arxiv",
    "version": 1
  }
}