Pith Number

pith:CMKFQZII

pith:2009:CMKFQZIIJIVO24B6TILWDW3BNU

not attested not anchored not stored refs pending

The quasar M_bh - M_host relation through Cosmic Time II - Evidence for evolution from z=3 to the present age

A. Treves, J.K. Kotilainen, M. Labita, R. Decarli, R. Falomo, R. Scarpa

arxiv:0911.2988 v1 · 2009-11-16 · 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{CMKFQZIIJIVO24B6TILWDW3BNU}

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	2026-05-18T02:10:47.350465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13145865084a2aed703e9a1761db616d1b450e5ca10eda7cb1059d5d1d107e0d

Aliases

arxiv: 0911.2988 · arxiv_version: 0911.2988v1 · doi: 10.48550/arxiv.0911.2988 · pith_short_12: CMKFQZIIJIVO · pith_short_16: CMKFQZIIJIVO24B6 · pith_short_8: CMKFQZII

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/CMKFQZIIJIVO24B6TILWDW3BNU \
  | 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: 13145865084a2aed703e9a1761db616d1b450e5ca10eda7cb1059d5d1d107e0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90af7d8c6a9a8d915877cfb49ac161f9737a8c6d157e0af15e33f11d4eece1a6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-16T10:25:53Z",
    "title_canon_sha256": "422c2eb511f6bf2c8833615eb65aeebabb805c7bd853ad9284f9e6370862dcb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2988",
    "kind": "arxiv",
    "version": 1
  }
}