Pith Number

pith:ZO52HN6M

pith:2012:ZO52HN6MFJIPYRMDODYWZYNTRD

not attested not anchored not stored refs pending

Intranight optical variability of radio-loud broad absorption line quasars

Hum Chand (ARIES), Ravi Joshi (ARIES)

arxiv:1211.4662 v1 · 2012-11-20 · astro-ph.HE · 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{ZO52HN6MFJIPYRMDODYWZYNTRD}

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	2026-05-18T01:53:02.646247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbbba3b7cc2a50fc458370f16ce1b388cdc4120e8f4e45584385c543aa18b6c8

Aliases

arxiv: 1211.4662 · arxiv_version: 1211.4662v1 · doi: 10.48550/arxiv.1211.4662 · pith_short_12: ZO52HN6MFJIP · pith_short_16: ZO52HN6MFJIPYRMD · pith_short_8: ZO52HN6M

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/ZO52HN6MFJIPYRMDODYWZYNTRD \
  | 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: cbbba3b7cc2a50fc458370f16ce1b388cdc4120e8f4e45584385c543aa18b6c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ea70d004e685576e12c8bb977a1d89194a68bb4e68fe2f1c89884452947b49b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-11-20T04:48:59Z",
    "title_canon_sha256": "ca537c7c8aa886abb81b8bf4732342a5c6b940e48ecbc0cefaa14052f3dab459"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4662",
    "kind": "arxiv",
    "version": 1
  }
}