Pith Number

pith:WKASAXUM

pith:2009:WKASAXUMCVYQ3YDBHCCGP6WOAQ

not attested not anchored not stored refs pending

The evolution of the scatter of the cosmic average color-magnitude relation: Demonstrating consistency with the ongoing formation of elliptical galaxies

2), (2) University of Nottingham, (3) Sterrewacht Leiden, 4), (4) Institut fuer Astro- und Teilchenphysik, (5) Astronomy Department, 6) ((1) Max-Planck-Institut fuer Astronomie, (6) Department of Physics, Boris Haeussler (1, Christine Ruhland (1), Daniel H. McIntosh (5, Edward N. Taylor (3), Eric F. Bell (1), Leiden University, Marco Barden (1, Universitaet Innsbruck, University of Massachusetts, University of Missouri)

arxiv:0901.4340 v1 · 2009-01-28 · 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{WKASAXUMCVYQ3YDBHCCGP6WOAQ}

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	2026-05-18T04:29:17.089501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b281205e8c15710de061388467face0402af67b6b8048bef499bdfaa661e8e0f

Aliases

arxiv: 0901.4340 · arxiv_version: 0901.4340v1 · doi: 10.48550/arxiv.0901.4340 · pith_short_12: WKASAXUMCVYQ · pith_short_16: WKASAXUMCVYQ3YDB · pith_short_8: WKASAXUM

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/WKASAXUMCVYQ3YDBHCCGP6WOAQ \
  | 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: b281205e8c15710de061388467face0402af67b6b8048bef499bdfaa661e8e0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46caf2b60982bcc827b609a48fffd9fbaddf4778a89c6bc1dc0f70b7c596e7ca",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-28T19:25:11Z",
    "title_canon_sha256": "fe6ae5c4353655d290209a60de2944793d6ccf775cba40898100f9c8fba855dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4340",
    "kind": "arxiv",
    "version": 1
  }
}