Pith Number

pith:U7BFWMSQ

pith:2008:U7BFWMSQQQ7NEUHPNYS5UDZM6K

not attested not anchored not stored refs pending

Inferring the Inclination of a Black Hole Accretion Disk from Observations of its Polarized Continuum Radiation

Jeffrey E. McClintock, Li-Xin Li, Ramesh Narayan

arxiv:0809.0866 v2 · 2008-09-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7BFWMSQQQ7NEUHPNYS5UDZM6K}

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	2026-05-18T04:29:32.883696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c25b3250843ed250ef6e25da0f2cf2b684729a06944d6218b08107a510f2a0

Aliases

arxiv: 0809.0866 · arxiv_version: 0809.0866v2 · doi: 10.48550/arxiv.0809.0866 · pith_short_12: U7BFWMSQQQ7N · pith_short_16: U7BFWMSQQQ7NEUHP · pith_short_8: U7BFWMSQ

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/U7BFWMSQQQ7NEUHPNYS5UDZM6K \
  | 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: a7c25b3250843ed250ef6e25da0f2cf2b684729a06944d6218b08107a510f2a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e029f12a37e7a922997802d7866aa7fcb2a3417524071f90e4a8730316b8cff8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-04T18:49:46Z",
    "title_canon_sha256": "03ae15872b0b1b1e0636fb6309a945c85371ed70f4370d8e693c064ce8102f27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0866",
    "kind": "arxiv",
    "version": 2
  }
}