Pith Number

pith:WK7SJ3PV

pith:2015:WK7SJ3PVS5NIYCGFJDWGAS663H

not attested not anchored not stored refs pending

SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate

Jorge Cuadra (PUC), Jun-Xian Wang (USTC), Linhua Jiang (PKU), Nathaniel R. Butler (ASU), Xian Chen (PUC), Yue Shen (UIUC), Zhen-Ya Zheng (PUC)

arxiv:1512.08730 v3 · 2015-12-29 · 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{WK7SJ3PVS5NIYCGFJDWGAS663H}

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	2026-05-18T01:08:42.972928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2bf24edf5975a8c08c548ec604bded9eafc4d9c951cb6544ea5c718c7089230

Aliases

arxiv: 1512.08730 · arxiv_version: 1512.08730v3 · doi: 10.48550/arxiv.1512.08730 · pith_short_12: WK7SJ3PVS5NI · pith_short_16: WK7SJ3PVS5NIYCGF · pith_short_8: WK7SJ3PV

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/WK7SJ3PVS5NIYCGFJDWGAS663H \
  | 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: b2bf24edf5975a8c08c548ec604bded9eafc4d9c951cb6544ea5c718c7089230

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f89b97cea1576177831958e5f8d950b5df8cd14e716e40517e6dec7c8528ded2",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-12-29T17:08:26Z",
    "title_canon_sha256": "031dc7c8cc54b1dea700576c4ebff123a47b94ec4f3cbc5aeaae2d54201125ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08730",
    "kind": "arxiv",
    "version": 3
  }
}