Pith Number

pith:TPKDIMOU

pith:1994:TPKDIMOUBAOG6PBGBCGWFVN4US

not attested not anchored not stored refs pending

On the Relationship between Optical and X-Ray Luminosity of Quasars

A. Franceschini, F. La Franca, R. Vio, S. Cristiani

arxiv:astro-ph/9412029 v1 · 1994-12-08 · 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{TPKDIMOUBAOG6PBGBCGWFVN4US}

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	2026-05-18T04:21:41.138931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bd43431d4081c6f3c26088d62d5bca4bc8d2bbb81cd8b336a4b5b0689048f14

Aliases

arxiv: astro-ph/9412029 · arxiv_version: astro-ph/9412029v1 · doi: 10.48550/arxiv.astro-ph/9412029 · pith_short_12: TPKDIMOUBAOG · pith_short_16: TPKDIMOUBAOG6PBG · pith_short_8: TPKDIMOU

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/TPKDIMOUBAOG6PBGBCGWFVN4US \
  | 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: 9bd43431d4081c6f3c26088d62d5bca4bc8d2bbb81cd8b336a4b5b0689048f14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79fd9cd116e65f29f8e01e7e292a7eb4b0339b5cc856f1a705623882a218e10d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-12-08T18:45:41Z",
    "title_canon_sha256": "89c24242f86a9c51515092261353ec6be5bdaab6cb8ec9cba95a6dd4b41ae703"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9412029",
    "kind": "arxiv",
    "version": 1
  }
}