Pith Number

pith:QS3YJBD6

pith:2009:QS3YJBD6TMVXU6FXAXEF5SATX5

not attested not anchored not stored refs pending

Measuring Black Hole Spin via the X-ray Continuum Fitting Method: Beyond the Thermal Dominant State

James F. Steiner, Jeffrey E. McClintock, Lijun Gou, Ramesh Narayan, Ronald A. Remillard

arxiv:0907.2920 v2 · 2009-07-16 · 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{QS3YJBD6TMVXU6FXAXEF5SATX5}

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	2026-05-18T02:12:56.478220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84b784847e9b2b7a78b705c85ec813bf75e67973823e78569c414e7c52271806

Aliases

arxiv: 0907.2920 · arxiv_version: 0907.2920v2 · doi: 10.48550/arxiv.0907.2920 · pith_short_12: QS3YJBD6TMVX · pith_short_16: QS3YJBD6TMVXU6FX · pith_short_8: QS3YJBD6

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/QS3YJBD6TMVXU6FXAXEF5SATX5 \
  | 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: 84b784847e9b2b7a78b705c85ec813bf75e67973823e78569c414e7c52271806

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dac33ed349679cc94ec2f040da4e4ee7821f1233937417cdfe18fb51f2bc4ff9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-07-16T20:07:56Z",
    "title_canon_sha256": "84a34950f76dda57075b4f66cbe4b778b81a8763c5e807b22702bba2becba889"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2920",
    "kind": "arxiv",
    "version": 2
  }
}