Pith Number

pith:Y3GUFDGP

pith:2009:Y3GUFDGPVBKFQCZFKWH5WLA54Y

not attested not anchored not stored refs pending

The evolution of Black Hole scaling relations in galaxy mergers

Andreas Burkert, Peter H. Johansson, Thorsten Naab

arxiv:0910.2232 v3 · 2009-10-13 · 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{Y3GUFDGPVBKFQCZFKWH5WLA54Y}

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	2026-05-18T02:34:19.194642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6cd428ccfa854580b25558fdb2c1de6324b7f0ee82eb692312b62a281f98962

Aliases

arxiv: 0910.2232 · arxiv_version: 0910.2232v3 · doi: 10.48550/arxiv.0910.2232 · pith_short_12: Y3GUFDGPVBKF · pith_short_16: Y3GUFDGPVBKFQCZF · pith_short_8: Y3GUFDGP

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/Y3GUFDGPVBKFQCZFKWH5WLA54Y \
  | 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: c6cd428ccfa854580b25558fdb2c1de6324b7f0ee82eb692312b62a281f98962

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3d17ebae06b523bd4eeaf091a6c9307d3aa7bcd6bed6b9d64ab284bde8cd83b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-13T09:55:53Z",
    "title_canon_sha256": "8dc1f4bd192408e0ca8df95a36e2bd3f138cb2cc1dd10f62930c44352c06e1f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2232",
    "kind": "arxiv",
    "version": 3
  }
}