Pith Number

pith:KQPD3OJD

pith:2015:KQPD3OJD4VEO2QOVDSMSSOU3AA

not attested not anchored not stored refs pending

Merger-driven Fueling of Active Galactic Nuclei: Six Dual and Offset Active Galactic Nuclei Discovered with Chandra and Hubble Space Telescope Observations

David Pooley, Greg M. Madejski, Jenny E. Greene, Julia M. Comerford, Michael C. Cooper, Nadia L. Zakamska, R. Scott Barrows

arxiv:1504.01391 v1 · 2015-04-06 · astro-ph.GA · 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{KQPD3OJD4VEO2QOVDSMSSOU3AA}

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	2026-05-18T02:19:27.339378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

541e3db923e548ed41d51c99293a9b001148d92dd92631ae3d06e7edbd6c4f07

Aliases

arxiv: 1504.01391 · arxiv_version: 1504.01391v1 · doi: 10.48550/arxiv.1504.01391 · pith_short_12: KQPD3OJD4VEO · pith_short_16: KQPD3OJD4VEO2QOV · pith_short_8: KQPD3OJD

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/KQPD3OJD4VEO2QOVDSMSSOU3AA \
  | 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: 541e3db923e548ed41d51c99293a9b001148d92dd92631ae3d06e7edbd6c4f07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cd179d69db0fe2b975756f459dd16f870a476f2580a6df94c97dcf6600a5de0",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-06T20:00:43Z",
    "title_canon_sha256": "8c9efb893df9f0ba8574e4beb2a9680640de31bbec6c0afc758949ba521e29d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01391",
    "kind": "arxiv",
    "version": 1
  }
}