Pith Number

pith:CYFDBHEL

pith:2009:CYFDBHELGLFK5URSLAKI4YIPQD

not attested not anchored not stored refs pending

On the observed distributions of black hole masses and Eddington ratios from radiation pressure corrected virial indicators

A. Marconi, A. Robinson, D. Axon, G. Risaliti, G. Torricelli, P. Pietrini, R. Maiolino, T. Nagao

arxiv:0905.0539 v1 · 2009-05-05 · astro-ph.CO · 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{CYFDBHELGLFK5URSLAKI4YIPQD}

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	2026-05-18T04:29:43.177209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

160a309c8b32caaed23258148e610f80d76af0b93fd2488797a0aff6250007a9

Aliases

arxiv: 0905.0539 · arxiv_version: 0905.0539v1 · doi: 10.48550/arxiv.0905.0539 · pith_short_12: CYFDBHELGLFK · pith_short_16: CYFDBHELGLFK5URS · pith_short_8: CYFDBHEL

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/CYFDBHELGLFK5URSLAKI4YIPQD \
  | 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: 160a309c8b32caaed23258148e610f80d76af0b93fd2488797a0aff6250007a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0185ebcbc4c6290ae55043992cf9010e8300b56d49be2a93bf357845a257c2e6",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-05T07:31:00Z",
    "title_canon_sha256": "32261bfdca62cfc78689f77db680ea72ec5fbe374e02ab3dc585a157723fd584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0539",
    "kind": "arxiv",
    "version": 1
  }
}