Pith Number

pith:SPERAB7T

pith:2012:SPERAB7TENZKG7E5IQ3BQUSZ2D

not attested not anchored not stored refs pending

Disclosing the Radio Loudness Distribution Dichotomy in Quasars: An Unbiased Monte Carlo Approach Applied to the SDSS-FIRST Quasar Sample

Brandon C. Kelly, Eva Schinnerer, Gianni Zamorani, Mislav Balokovic, Vernesa Smolcic, Zeljko Ivezic

arxiv:1209.1099 v1 · 2012-09-05 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPERAB7TENZKG7E5IQ3BQUSZ2D}

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	2026-05-18T03:13:00.366150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93c91007f32372a37c9d4436185259d0d1a4e28ea116e9c344898ddb86527a3b

Aliases

arxiv: 1209.1099 · arxiv_version: 1209.1099v1 · doi: 10.48550/arxiv.1209.1099 · pith_short_12: SPERAB7TENZK · pith_short_16: SPERAB7TENZKG7E5 · pith_short_8: SPERAB7T

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/SPERAB7TENZKG7E5IQ3BQUSZ2D \
  | 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: 93c91007f32372a37c9d4436185259d0d1a4e28ea116e9c344898ddb86527a3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e475a28335fcd04eb2382582718bbaa99350dc2627df8c5b46abae283ee1af1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-09-05T20:00:03Z",
    "title_canon_sha256": "98e57f667b8609ee26f3200f8147a35a43f95ff9a0bbb12ff490430e5afe769d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1099",
    "kind": "arxiv",
    "version": 1
  }
}