Pith Number

pith:3UXTEXZO

pith:2011:3UXTEXZO6MALAIVMUTJNWQFUE5

not attested not anchored not stored refs pending

On the Radio and Optical Luminosity Evolution of Quasars

A. Lawrence, J. Singal, L. Stawarz, V. Petrosian

arxiv:1101.2930 v4 · 2011-01-15 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UXTEXZO6MALAIVMUTJNWQFUE5}

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	2026-05-18T02:03:39.784265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd2f325f2ef300b022aca4d2db40b42779cdb7374a5dd494d58a0640c070f9bb

Aliases

arxiv: 1101.2930 · arxiv_version: 1101.2930v4 · doi: 10.48550/arxiv.1101.2930 · pith_short_12: 3UXTEXZO6MAL · pith_short_16: 3UXTEXZO6MALAIVM · pith_short_8: 3UXTEXZO

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/3UXTEXZO6MALAIVMUTJNWQFUE5 \
  | 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: dd2f325f2ef300b022aca4d2db40b42779cdb7374a5dd494d58a0640c070f9bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24812206485709121e8ff14331fce6f9545f1fc4821734a9f953d564dc4bc680",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-15T00:17:16Z",
    "title_canon_sha256": "1d2d619fbc218c89b0cc98184c4453aab7902b2e60612e1e02fcc880cd8219ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2930",
    "kind": "arxiv",
    "version": 4
  }
}