Pith Number

pith:CRBCKMJ3

pith:2006:CRBCKMJ3WG4ZG3QDI2KOU7YNV6

not attested not anchored not stored refs pending

Reconstructing the Cosmic Evolution of Quasars from the Age Distribution of Local Early-Type Galaxies

Mariangela Bernardi (UPenn), Raul Jimenez (UPenn), Zoltan Haiman (Columbia)

arxiv:astro-ph/0610723 v1 · 2006-10-24 · 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{CRBCKMJ3WG4ZG3QDI2KOU7YNV6}

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	2026-05-18T01:40:29.174249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

144225313bb1b9936e034694ea7f0dafb4f99d5409c6c7acacb30575856ce2b9

Aliases

arxiv: astro-ph/0610723 · arxiv_version: astro-ph/0610723v1 · doi: 10.48550/arxiv.astro-ph/0610723 · pith_short_12: CRBCKMJ3WG4Z · pith_short_16: CRBCKMJ3WG4ZG3QD · pith_short_8: CRBCKMJ3

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/CRBCKMJ3WG4ZG3QDI2KOU7YNV6 \
  | 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: 144225313bb1b9936e034694ea7f0dafb4f99d5409c6c7acacb30575856ce2b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "587d777df6dc345ae1c1494a118768d5cc9a82f5dedbc441a7df7fa69bbb1d9d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-10-24T20:09:15Z",
    "title_canon_sha256": "65720aa1ff4e16e00e8f05df23003efe0371cfeb91333dedeeb85fd46c397f4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0610723",
    "kind": "arxiv",
    "version": 1
  }
}