Pith Number

pith:KDSBBQJX

pith:2018:KDSBBQJXEKC5UL7U5IMX5ZZQUA

not attested not anchored not stored refs pending

Changing-Look Quasar Candidates: First Results from Follow-up Spectroscopy of Highly Optically Variable Quasars

Alastair Bruce, Amy LeBleu, Andy Lawrence, Chelsea L. MacLeod, Daniel Stern, David Homan, Eugene Magnier, Jessie Runnoe, John J. Ruan, Kenneth C. Chambers, Matthew Graham, Michael Eracleous, Nicholas P. Ross, Nick Kaiser, Nigel Metcalfe, Paul J. Green, Scott F. Anderson, William Burgett

arxiv:1810.00087 v2 · 2018-09-28 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KDSBBQJXEKC5UL7U5IMX5ZZQUA}

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

4 papers in Pith

OzSSy1: The Australian Southern Seyfert-1 Spectroscopic Atlas and Catalogue at z < 0.1

Accretion of Primordial Black Holes in Stellar Interiors

Unification models of Active Galactic Nuclei

A magnetically-supported disk-corona model for Changing-Look AGN transitions

Receipt and verification

First computed	2026-05-17T23:50:59.258149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50e410c1372285da2ff4ea197ee730a027b3a54c485ed7e056514d95771eb7d7

Aliases

arxiv: 1810.00087 · arxiv_version: 1810.00087v2 · doi: 10.48550/arxiv.1810.00087 · pith_short_12: KDSBBQJXEKC5 · pith_short_16: KDSBBQJXEKC5UL7U · pith_short_8: KDSBBQJX

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/KDSBBQJXEKC5UL7U5IMX5ZZQUA \
  | 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: 50e410c1372285da2ff4ea197ee730a027b3a54c485ed7e056514d95771eb7d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a78625163e19d88ff501f7dbed35eb2a01d7eec3b8eff0b0454968c557014f3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-28T21:23:28Z",
    "title_canon_sha256": "95cc0d0f7500f3e13f055f92655f43ba4b6c1c8f37fbda2fd80e6f171e39dcf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00087",
    "kind": "arxiv",
    "version": 2
  }
}