Pith Number

pith:N7LCY6DP

pith:2008:N7LCY6DPS7GIKUSVBTGVFHUKA7

not attested not anchored not stored refs pending

Modeling the cosmological co-evolution of supermassive black holes and galaxies: II. The clustering of quasars and their dark environment

Enzo Branchini, Federico Marulli, Lauro Moscardini, Silvia Bonoli, Simon D.M. White, Volker Springel

arxiv:0812.0003 v2 · 2008-11-28 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7LCY6DPS7GIKUSVBTGVFHUKA7}

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	2026-05-18T02:15:12.627905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fd62c786f97cc8552550ccd529e8a07e76f4e3c21c92ece772c9b95fd570451

Aliases

arxiv: 0812.0003 · arxiv_version: 0812.0003v2 · doi: 10.48550/arxiv.0812.0003 · pith_short_12: N7LCY6DPS7GI · pith_short_16: N7LCY6DPS7GIKUSV · pith_short_8: N7LCY6DP

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/N7LCY6DPS7GIKUSVBTGVFHUKA7 \
  | 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: 6fd62c786f97cc8552550ccd529e8a07e76f4e3c21c92ece772c9b95fd570451

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b193f27bcec7b7e4428546c06929e158ec0a465905ca8185cb60fc167cf37a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-28T21:00:13Z",
    "title_canon_sha256": "a2ff42c247938b90ac9571fc90c3e02c82e9511aa4a56da0a8f28b1ac123f4d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0003",
    "kind": "arxiv",
    "version": 2
  }
}