Pith Number

pith:PPFLXNZ6

pith:2003:PPFLXNZ6SC3ZDD4FDB4HWLEI7G

not attested not anchored not stored refs pending

Is there a Dichotomy in the Radio Loudness Distribution of Quasars?

A. Celotti, L. Danese, M. Cirasuolo, M. Magliocchetti

arxiv:astro-ph/0306415 v2 · 2003-06-20 · astro-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{PPFLXNZ6SC3ZDD4FDB4HWLEI7G}

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	2026-07-04T16:52:01.382841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bcabbb73e90b7918f8518787b2c88f9be3f06143d493a2cd9a5717f26245437

Aliases

arxiv: astro-ph/0306415 · arxiv_version: astro-ph/0306415v2 · doi: 10.48550/arxiv.astro-ph/0306415 · pith_short_12: PPFLXNZ6SC3Z · pith_short_16: PPFLXNZ6SC3ZDD4F · pith_short_8: PPFLXNZ6

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/PPFLXNZ6SC3ZDD4FDB4HWLEI7G \
  | 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: 7bcabbb73e90b7918f8518787b2c88f9be3f06143d493a2cd9a5717f26245437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2646f03e6f6ceaa8b8c6b30aa1e05418560340a2a87d7d4e394f3112468574f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-06-20T13:40:00Z",
    "title_canon_sha256": "98d9e5e4bb06fc69fcb3418d6e325063c256573c59fc680dcf0fc20453ecab13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0306415",
    "kind": "arxiv",
    "version": 2
  }
}