Pith Number

pith:EHNFKTBD

pith:2010:EHNFKTBDXIDAXUOISIQO6EIQ2I

not attested not anchored not stored refs pending

The black holes of radio galaxies during the "Quasar Era": Masses, accretion rates, and evolutionary stage

Carlos De Breuck, Daniel Proga, Luc Binette, Matt D. Lehnert, Nicole P. H. Nesvadba, Philip N. Best

arxiv:1011.4158 v1 · 2010-11-18 · 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{EHNFKTBDXIDAXUOISIQO6EIQ2I}

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	2026-05-18T02:04:44.077883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21da554c23ba060bd1c89220ef1110d2311648e1bc180bcc93dde59e3d28d30f

Aliases

arxiv: 1011.4158 · arxiv_version: 1011.4158v1 · doi: 10.48550/arxiv.1011.4158 · pith_short_12: EHNFKTBDXIDA · pith_short_16: EHNFKTBDXIDAXUOI · pith_short_8: EHNFKTBD

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/EHNFKTBDXIDAXUOISIQO6EIQ2I \
  | 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: 21da554c23ba060bd1c89220ef1110d2311648e1bc180bcc93dde59e3d28d30f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae7107c4317496a2e357f927a237593c4733e0413f15aa95defb7c8c733c6bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-18T09:15:44Z",
    "title_canon_sha256": "6f2754b0963b1b6239cfa3b2ce4f27df0564a71aa40c757256087b8967396d55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.4158",
    "kind": "arxiv",
    "version": 1
  }
}