Pith Number

pith:LVAVG2YP

pith:2008:LVAVG2YPQE3TQN67CKS4QSPU7W

not attested not anchored not stored refs pending

An Energetic AGN Outburst Powered by a Rapidly Spinning Supermassive Black Hole or an Accreting Ultramassive Black Hole

B.R. McNamara (U. Waterloo), C.C. Kirkpatrick (U. Waterloo), D.A. Rafferty (Penn State), F. Kazemzadeh (U. Waterloo), L. Birzan (Penn State), M. W. Wise (U. Amsterdam), P.E.J. Nulsen (CfA)

arxiv:0811.3020 v2 · 2008-11-18 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LVAVG2YPQE3TQN67CKS4QSPU7W}

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	2026-05-18T02:15:14.045265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d41536b0f81373837df12a5c849f4fdbe98e42babc49e8b78ec5961e925ee61

Aliases

arxiv: 0811.3020 · arxiv_version: 0811.3020v2 · doi: 10.48550/arxiv.0811.3020 · pith_short_12: LVAVG2YPQE3T · pith_short_16: LVAVG2YPQE3TQN67 · pith_short_8: LVAVG2YP

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/LVAVG2YPQE3TQN67CKS4QSPU7W \
  | 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: 5d41536b0f81373837df12a5c849f4fdbe98e42babc49e8b78ec5961e925ee61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be6c34fa0da55051797175de56e54675f57ea0cfe5efb8f7f6738196a4d2d4c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-18T23:58:27Z",
    "title_canon_sha256": "45d516cf75d9bb08b45119ac093c7ff86bd217a6e4bddd72483ba9876db79f3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.3020",
    "kind": "arxiv",
    "version": 2
  }
}