Pith Number

pith:VCGPD4ZB

pith:2009:VCGPD4ZBV7H4SRRKTUYUPKADYZ

not attested not anchored not stored refs pending

Do Moderate-Luminosity Active Galactic Nuclei Suppress Star Formation?

Bronika Kushkuley, Brooke Simmons, C. Megan Urry, Ezequiel Treister, Kevin Schawinski, Shanil Virani, Sugata Kaviraj

arxiv:0901.1663 v2 · 2009-01-12 · 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{VCGPD4ZBV7H4SRRKTUYUPKADYZ}

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	2026-05-18T04:29:23.935991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a88cf1f321afcfc9462a9d3147a803c65142c46e637817fdecc3bf14f2c090f1

Aliases

arxiv: 0901.1663 · arxiv_version: 0901.1663v2 · doi: 10.48550/arxiv.0901.1663 · pith_short_12: VCGPD4ZBV7H4 · pith_short_16: VCGPD4ZBV7H4SRRK · pith_short_8: VCGPD4ZB

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/VCGPD4ZBV7H4SRRKTUYUPKADYZ \
  | 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: a88cf1f321afcfc9462a9d3147a803c65142c46e637817fdecc3bf14f2c090f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3de42707a887181352fc88b1d82f1c1c51e10c8d43fa3b52e33b49a282cd364",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-12T21:01:44Z",
    "title_canon_sha256": "ce45dc732374c860750033249783066fac195dfc52b8ce768426b475519de48a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1663",
    "kind": "arxiv",
    "version": 2
  }
}