Pith Number

pith:FF2KYWV7

pith:2010:FF2KYWV76IQC7QEVW7HHCR7Y3S

not attested not anchored not stored refs pending

Broad emission lines for negatively spinning black holes

C.S. Reynolds, J. Wilms, L.W. Brenneman, T. Dauser

arxiv:1007.4937 v2 · 2010-07-28 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FF2KYWV76IQC7QEVW7HHCR7Y3S}

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	2026-05-18T02:06:09.303167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2974ac5abff2202fc095b7ce7147f8dca976d5789c995a17bd9efaffdccb73c8

Aliases

arxiv: 1007.4937 · arxiv_version: 1007.4937v2 · doi: 10.48550/arxiv.1007.4937 · pith_short_12: FF2KYWV76IQC · pith_short_16: FF2KYWV76IQC7QEV · pith_short_8: FF2KYWV7

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/FF2KYWV76IQC7QEVW7HHCR7Y3S \
  | 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: 2974ac5abff2202fc095b7ce7147f8dca976d5789c995a17bd9efaffdccb73c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dbd5fec0da5086250070600e00da1180c7104c2b8cc4dfe2cce4d7779926b1e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-07-28T12:11:45Z",
    "title_canon_sha256": "d020768e3720768a5d5b437824125dbd4356fd6cf64800982d9b8fa51f3b44d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.4937",
    "kind": "arxiv",
    "version": 2
  }
}