Pith Number

pith:6ZIVUNQQ

pith:2009:6ZIVUNQQC4S2PICWOZUJTTX4EI

not attested not anchored not stored refs pending

Host galaxy morphologies of X-ray selected AGN: assessing the significance of different black hole fueling mechanisms to the accretion density of the Universe at z~1

A. Georgakakis, A. L. Coil, A. M. Koekemoer, C. M. Pierce, E. S. Laird, J. A. Newman, J. M. Lotz, K. Nandra, M. C. Cooper, R. L. Griffith

arxiv:0904.3747 v1 · 2009-04-23 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ZIVUNQQC4S2PICWOZUJTTX4EI}

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	2026-05-18T02:13:57.682469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6515a36101725a7a056766899cefc22170b0fbb9395984adb747f38939efbe1

Aliases

arxiv: 0904.3747 · arxiv_version: 0904.3747v1 · doi: 10.48550/arxiv.0904.3747 · pith_short_12: 6ZIVUNQQC4S2 · pith_short_16: 6ZIVUNQQC4S2PICW · pith_short_8: 6ZIVUNQQ

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/6ZIVUNQQC4S2PICWOZUJTTX4EI \
  | 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: f6515a36101725a7a056766899cefc22170b0fbb9395984adb747f38939efbe1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2395e223c7c48f8d372d3f5096fd38d89f18039b8e143509ec7abfb9f2c3c4bd",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-23T20:00:57Z",
    "title_canon_sha256": "2cd4f2f50ed20e7a6406c6ae3d3fdd65989e388baff53374f4683728e3a668c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3747",
    "kind": "arxiv",
    "version": 1
  }
}