Pith Number

pith:UQ7NV345

pith:2012:UQ7NV345YYZZZFAQFCAQPSXN6Y

not attested not anchored not stored refs pending

Jet Power and Black Hole Spin: Testing an Empirical Relationship and Using it to Predict the Spins of Six Black Holes

James F. Steiner, Jeffrey E. McClintock, Ramesh Narayan

arxiv:1211.5379 v2 · 2012-11-22 · astro-ph.HE · 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{UQ7NV345YYZZZFAQFCAQPSXN6Y}

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	2026-05-18T01:53:01.361197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a43edaef9dc6339c9410288107caedf61cb467eaf11bc9d6737e5e39f5ef28e0

Aliases

arxiv: 1211.5379 · arxiv_version: 1211.5379v2 · doi: 10.48550/arxiv.1211.5379 · pith_short_12: UQ7NV345YYZZ · pith_short_16: UQ7NV345YYZZZFAQ · pith_short_8: UQ7NV345

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/UQ7NV345YYZZZFAQFCAQPSXN6Y \
  | 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: a43edaef9dc6339c9410288107caedf61cb467eaf11bc9d6737e5e39f5ef28e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f6689cf30f5f87bb7df9f44ec1f9a4382edb55bba572027960566b76b63397f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-11-22T21:18:50Z",
    "title_canon_sha256": "030f30f8affe8671b562ed2fb2110c83c2a6e5f15f5a6041dc3f9ef6dbff6a42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5379",
    "kind": "arxiv",
    "version": 2
  }
}