Pith Number

pith:VZWH4Z7F

pith:2012:VZWH4Z7FEGPYCBI3VIY6YEDKX4

not attested not anchored not stored refs pending

Variability and the X-ray/UV ratio of active galactic nuclei. II. Analysis of a low-redshift Swift sample

D. Trevese, F. Vagnetti, M. Antonucci

arxiv:1212.3432 v1 · 2012-12-14 · 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{VZWH4Z7FEGPYCBI3VIY6YEDKX4}

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

Strong X-ray Variability of I Zwicky 1: Obscuration from Clumpy Accretion-Disk Winds

Receipt and verification

First computed	2026-05-18T01:52:38.304357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae6c7e67e5219f81051baa31ec106abf0bc5dd7fd71bd7f70be6e34cf0c868de

Aliases

arxiv: 1212.3432 · arxiv_version: 1212.3432v1 · doi: 10.48550/arxiv.1212.3432 · pith_short_12: VZWH4Z7FEGPY · pith_short_16: VZWH4Z7FEGPYCBI3 · pith_short_8: VZWH4Z7F

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/VZWH4Z7FEGPYCBI3VIY6YEDKX4 \
  | 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: ae6c7e67e5219f81051baa31ec106abf0bc5dd7fd71bd7f70be6e34cf0c868de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55aec9053f60bd3417d24c2b5b305c6c267cfff8601d6e0997e7bd18c8b8c89e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-14T10:30:32Z",
    "title_canon_sha256": "08c15e42b02791d21952aebbec88934f708d4c5a2623cd478a9a8da1cee373e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3432",
    "kind": "arxiv",
    "version": 1
  }
}