Pith Number

pith:ZBHB2S6D

pith:2009:ZBHB2S6DILCBD7D3FFPZCKMGDC

not attested not anchored not stored refs pending

The Lepton Sector of a Fourth Generation

Gustavo Burdman, Leandro Da Rold, Ricardo D. Matheus

arxiv:0912.5219 v2 · 2009-12-28 · 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{ZBHB2S6DILCBD7D3FFPZCKMGDC}

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	2026-05-18T02:33:55.235288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c84e1d4bc342c411fc7b295f91298618ac2263947af3f01efec6ea5c120e3f46

Aliases

arxiv: 0912.5219 · arxiv_version: 0912.5219v2 · doi: 10.48550/arxiv.0912.5219 · pith_short_12: ZBHB2S6DILCB · pith_short_16: ZBHB2S6DILCBD7D3 · pith_short_8: ZBHB2S6D

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/ZBHB2S6DILCBD7D3FFPZCKMGDC \
  | 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: c84e1d4bc342c411fc7b295f91298618ac2263947af3f01efec6ea5c120e3f46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65d40f2b7eea9abd66863b22a902c4d225423b0956d9eac506d7ef8a1e4a8919",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2009-12-28T21:07:39Z",
    "title_canon_sha256": "77106a35b698b2c9c12fa8a53e645cc91c510da7bc2fd1f459ae3cc4413d97e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5219",
    "kind": "arxiv",
    "version": 2
  }
}