Pith Number

pith:WADHY6KV

pith:2012:WADHY6KVXEQ6DDTYD3MDV7XIC7

not attested not anchored not stored refs pending

A Tale of Two Populations: The Contribution of Merger and Secular Processes to the Evolution of Active Galactic Nuclei

Aden R. Draper, David R. Ballantyne

arxiv:1203.5117 v1 · 2012-03-22 · 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{WADHY6KVXEQ6DDTYD3MDV7XIC7}

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	2026-05-18T01:58:04.235285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0067c7955b921e18e781ed83afee817dac76e5ffc9f45d61f02c9a646343de9

Aliases

arxiv: 1203.5117 · arxiv_version: 1203.5117v1 · doi: 10.48550/arxiv.1203.5117 · pith_short_12: WADHY6KVXEQ6 · pith_short_16: WADHY6KVXEQ6DDTY · pith_short_8: WADHY6KV

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/WADHY6KVXEQ6DDTYD3MDV7XIC7 \
  | 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: b0067c7955b921e18e781ed83afee817dac76e5ffc9f45d61f02c9a646343de9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf18b1877d22ec79ceddab0bd469e23ef7f2c28cf7773b62dc930511f04090e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-22T20:18:38Z",
    "title_canon_sha256": "48d54ad8c7c8d6dd21fe9f76330fba06263ec7f30e109b3912f4a45a01e44b72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5117",
    "kind": "arxiv",
    "version": 1
  }
}