Pith Number

pith:SNW252IQ

pith:2011:SNW252IQZZVLUVRMQJRMCMVHFI

not attested not anchored not stored refs pending

Probing spectral properties of radio-quiet quasars searched for optical microvariability-II

Alok C. Gupta, Hum Chand, Paul J. Wiita, Raghunathan Srianand, Ravi Joshi

arxiv:1110.2334 v1 · 2011-10-11 · 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{SNW252IQZZVLUVRMQJRMCMVHFI}

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	2026-05-18T02:00:13.822363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

936daee910ce6aba562c8262c132a72a2dd985dc7278bd603b73f6bd37a16df8

Aliases

arxiv: 1110.2334 · arxiv_version: 1110.2334v1 · doi: 10.48550/arxiv.1110.2334 · pith_short_12: SNW252IQZZVL · pith_short_16: SNW252IQZZVLUVRM · pith_short_8: SNW252IQ

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/SNW252IQZZVLUVRMQJRMCMVHFI \
  | 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: 936daee910ce6aba562c8262c132a72a2dd985dc7278bd603b73f6bd37a16df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6c08b6dd796c417fe361fc489e683ed0dc9ad19398e5cf58573c5873b8b24b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-11T11:32:49Z",
    "title_canon_sha256": "ffc2b4b2490a80eb481901a6b96d52c806f50f2b8274623470649d3dca42ae1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2334",
    "kind": "arxiv",
    "version": 1
  }
}