Pith Number

pith:E7LIURFJ

pith:2011:E7LIURFJKIWDYKM6HN2QLV7HMA

not attested not anchored not stored refs pending

Measuring the Spins of Accreting Black Holes

Akshay Kulkarni, James F. Steiner, Jeffrey E. McClintock, Jerome A. Orosz, Lijun Gou, Ramesh Narayan, Robert F. Penna, Ronald A. Remillard, Shane W. Davis

arxiv:1101.0811 v2 · 2011-01-04 · astro-ph.HE · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E7LIURFJKIWDYKM6HN2QLV7HMA}

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	2026-05-18T02:04:13.227200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27d68a44a9522c3c299e3b7505d7e76024a65451a20ca9edb88143767b615516

Aliases

arxiv: 1101.0811 · arxiv_version: 1101.0811v2 · doi: 10.48550/arxiv.1101.0811 · pith_short_12: E7LIURFJKIWD · pith_short_16: E7LIURFJKIWDYKM6 · pith_short_8: E7LIURFJ

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/E7LIURFJKIWDYKM6HN2QLV7HMA \
  | 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: 27d68a44a9522c3c299e3b7505d7e76024a65451a20ca9edb88143767b615516

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9dc66e2307770a430bb9f50de44dd8f7c0d712a56eca29b378cfcbca7549904",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-04T21:00:02Z",
    "title_canon_sha256": "6cbe28177967a70a6573a6ee619f3911417e4865a9e671d82560205806a5f6d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.0811",
    "kind": "arxiv",
    "version": 2
  }
}