Pith Number

pith:KEVJXOQZ

pith:2012:KEVJXOQZCB47VN7JMRWNBD77Q7

not attested not anchored not stored refs pending

On the hunt for ultramassive black holes in brightest cluster galaxies

A. C. Edge (Durham University), A. C. Fabian (IoA, J. Hlavacek-Larrondo (IoA, M. T. Hogan (Durham University), University of Cambridge)

arxiv:1204.5759 v2 · 2012-04-25 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEVJXOQZCB47VN7JMRWNBD77Q7}

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

Shadows of Giants: Constraints on Stupendously Large Black Holes from Negative Sources against the Cosmic Microwave Background

Receipt and verification

First computed	2026-05-18T01:57:44.170424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

512a9bba191079fab7e9646cd08fff87f8268a621f83335ad93fef21865a3afe

Aliases

arxiv: 1204.5759 · arxiv_version: 1204.5759v2 · doi: 10.48550/arxiv.1204.5759 · pith_short_12: KEVJXOQZCB47 · pith_short_16: KEVJXOQZCB47VN7J · pith_short_8: KEVJXOQZ

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/KEVJXOQZCB47VN7JMRWNBD77Q7 \
  | 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: 512a9bba191079fab7e9646cd08fff87f8268a621f83335ad93fef21865a3afe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "432d8c195887e1c99e18d00f2305f4cccac980344cc44a44839e0b860f6afbc6",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-25T20:28:33Z",
    "title_canon_sha256": "099f10ad07b83fcfcc23bd22a7b7eae9b34226c4a963caf29dd66718785c3b1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5759",
    "kind": "arxiv",
    "version": 2
  }
}