Pith Number

pith:NLFVA7YM

pith:2009:NLFVA7YMJHE5ODTOJJUKABKDUX

not attested not anchored not stored refs pending

The role of black holes in galaxy formation and evolution

A. Babul, A. Cattaneo, A. C. Fabian, A. Dekel, A. Khalatyan, A. Mahdavi, C. S. Frenk, H. Netzer, J. Binney, J. Kormendy, J. Silk, L. Wisotzki, M. Brueggen, M. Steinmetz, P. N. Best, R. Mushotzky, S. M. Faber

arxiv:0907.1608 v1 · 2009-07-09 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NLFVA7YMJHE5ODTOJJUKABKDUX}

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	2026-05-18T04:37:33.917849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6acb507f0c49c9d70e6e4a68a00543a5ef700f66fd9a8d2c0e2beaef7128ee10

Aliases

arxiv: 0907.1608 · arxiv_version: 0907.1608v1 · doi: 10.48550/arxiv.0907.1608 · pith_short_12: NLFVA7YMJHE5 · pith_short_16: NLFVA7YMJHE5ODTO · pith_short_8: NLFVA7YM

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/NLFVA7YMJHE5ODTOJJUKABKDUX \
  | 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: 6acb507f0c49c9d70e6e4a68a00543a5ef700f66fd9a8d2c0e2beaef7128ee10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73a1e23837aea121ab137ee48c4b0f3c9c621aac5058f1272d6f509843262e50",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-09T16:32:36Z",
    "title_canon_sha256": "83b4b25e5219bf8f2516b4ed8e6da226ef2df8dc24af110cdfc6e1a9e1779d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1608",
    "kind": "arxiv",
    "version": 1
  }
}