Pith Number

pith:OF3KYALD

pith:2009:OF3KYALDAXGDMGJ66QBPNLGVLY

not attested not anchored not stored refs pending

On the variation of black hole accretion disc radii as a function of state and accretion rate

C. Cabanac, E. G. Koerding, R. J. H. Dunn, R. P. Fender

arxiv:0904.0701 v1 · 2009-04-04 · 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{OF3KYALDAXGDMGJ66QBPNLGVLY}

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	2026-05-18T02:14:07.530330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7176ac016305cc36193ef402f6acd55e2292fe69b13963692ce66d9ce359a7cc

Aliases

arxiv: 0904.0701 · arxiv_version: 0904.0701v1 · doi: 10.48550/arxiv.0904.0701 · pith_short_12: OF3KYALDAXGD · pith_short_16: OF3KYALDAXGDMGJ6 · pith_short_8: OF3KYALD

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/OF3KYALDAXGDMGJ66QBPNLGVLY \
  | 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: 7176ac016305cc36193ef402f6acd55e2292fe69b13963692ce66d9ce359a7cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fb55f87c02e5d94409ab0b05cd4d69e095dc0d1040c6fc0559324e8caafc092",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-04T10:42:14Z",
    "title_canon_sha256": "16524aa66c421c8920ba55be3595c41a5c089abd261328da35d24e5b6d403d56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0701",
    "kind": "arxiv",
    "version": 1
  }
}