Pith Number

pith:VOCE5Q3C

pith:2012:VOCE5Q3CBOKKNMSSDLMEXP7NRD

not attested not anchored not stored refs pending

The evolution of active galactic nuclei and their spins

Andrea Merloni, Jean-Pierre Lasota, Marek Sikora, Marta Volonteri

arxiv:1210.1025 v2 · 2012-10-03 · 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{VOCE5Q3CBOKKNMSSDLMEXP7NRD}

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	2026-05-18T01:54:11.200992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab844ec3620b94a6b2521ad84bbfed88c3cd0d164736c43c72d3ec1462263f62

Aliases

arxiv: 1210.1025 · arxiv_version: 1210.1025v2 · doi: 10.48550/arxiv.1210.1025 · pith_short_12: VOCE5Q3CBOKK · pith_short_16: VOCE5Q3CBOKKNMSS · pith_short_8: VOCE5Q3C

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/VOCE5Q3CBOKKNMSSDLMEXP7NRD \
  | 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: ab844ec3620b94a6b2521ad84bbfed88c3cd0d164736c43c72d3ec1462263f62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1af517faf5f6e86a1a7c6dd1b62f6656512a8aac208a8f8ed7bca94ecdcbbf9e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-10-03T08:38:50Z",
    "title_canon_sha256": "ab8d00c58ade1c48a7dc44e0988a7da9f56a54baa028c6d10a5bcd6649af37d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1025",
    "kind": "arxiv",
    "version": 2
  }
}