Pith Number

pith:SMHHPROY

pith:1995:SMHHPROYXRBYJVIOYIXIS7RX6S

not attested not anchored not stored refs pending

The Optical Variability of QSO's

A. Gemmo, F. La Franca, I. Aretxaga, P. Andreani, R. Vio, S. Cristiani, S. Trentini

arxiv:astro-ph/9506140 v1 · 1995-06-30 · 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{SMHHPROYXRBYJVIOYIXIS7RX6S}

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.

Cited by

1 paper in Pith

VAR-PZnn: A machine-learning framework for AGN photometric redshifts using color and variability-based features

Receipt and verification

First computed	2026-07-04T14:14:33.726379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

930e77c5d8bc4384d50ec22e897e37f48003d229c7d114127d9e0cde11bd0dc1

Aliases

arxiv: astro-ph/9506140 · arxiv_version: astro-ph/9506140v1 · doi: 10.48550/arxiv.astro-ph/9506140 · pith_short_12: SMHHPROYXRBY · pith_short_16: SMHHPROYXRBYJVIO · pith_short_8: SMHHPROY

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/SMHHPROYXRBYJVIOYIXIS7RX6S \
  | 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: 930e77c5d8bc4384d50ec22e897e37f48003d229c7d114127d9e0cde11bd0dc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5347013f9a54e89c087e41c4823e88c7c20cf6469b22ff8f8eb40705000aac3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-06-30T09:03:33Z",
    "title_canon_sha256": "2a8a0e9f95cfc00a60b6e167eca7996afed6cdf5ce3229e88122197ab4cd974d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9506140",
    "kind": "arxiv",
    "version": 1
  }
}