Pith Number

pith:IDEQX6RO

pith:2006:IDEQX6ROVEQ2A5KA5BBCJ2O7AX

not attested not anchored not stored refs pending

An Upper Limit to the Degree of Evolution Between Supermassive Black Holes and their Host Galaxies

Brant Robertson, Elisabeth Krause, Lars Hernquist, Philip F. Hopkins, Thomas J. Cox (Harvard/CfA)

arxiv:astro-ph/0608091 v1 · 2006-08-03 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IDEQX6ROVEQ2A5KA5BBCJ2O7AX}

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	2026-05-18T04:28:58.114250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40c90bfa2ea921a07540e84224e9df05d66f2c409d02571a4989dccec87e6f25

Aliases

arxiv: astro-ph/0608091 · arxiv_version: astro-ph/0608091v1 · doi: 10.48550/arxiv.astro-ph/0608091 · pith_short_12: IDEQX6ROVEQ2 · pith_short_16: IDEQX6ROVEQ2A5KA · pith_short_8: IDEQX6RO

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/IDEQX6ROVEQ2A5KA5BBCJ2O7AX \
  | 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: 40c90bfa2ea921a07540e84224e9df05d66f2c409d02571a4989dccec87e6f25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce82cfcdba92e2d0807eaa1caa229ecf2875a74bd2333e2a5538495600ac116d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-08-03T20:11:12Z",
    "title_canon_sha256": "8bf34aef95f23f4e9ccfea9a2b65ef9ecadaedf457d16f847d8af3101ecd15d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0608091",
    "kind": "arxiv",
    "version": 1
  }
}