Pith Number

pith:N3MVJKZP

pith:2004:N3MVJKZPJH3XMETJ6D7R4YBJZR

not attested not anchored not stored refs pending

The 2dF Galaxy Redshift Survey: The blue galaxy fraction and implications for the Butcher-Oemler effect

Bruce Peterson, Carlos Frenk, Carlton Baugh, Carole Jackson, Chris Collins, Darren Madgwick, Edward Hawkins, Gavin Dalton, George Efstathiou, Ian Lewis, Ivan Baldry, John Peacock, Joss Bland-Hawthorn, Karl Glazebrook, Keith Taylor, Matthew Colless, Michael Balogh, Nicholas Cross, Ofer Lahav, Peder Norberg, Richard Ellis, Roberto De Propris, Russell Cannon, Shaun Cole, Simon Driver, Steve Maddox, Stuart Lumsden, Terry Bridges, Warrick Couch, Will Percival, Will Sutherland

arxiv:astro-ph/0402652 v1 · 2004-02-26 · 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{N3MVJKZPJH3XMETJ6D7R4YBJZR}

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	2026-05-18T04:27:04.591553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ed954ab2f49f7761269f0ff1e6029cc6a9e8657853f9f382188f01e06ac7a7d

Aliases

arxiv: astro-ph/0402652 · arxiv_version: astro-ph/0402652v1 · doi: 10.48550/arxiv.astro-ph/0402652 · pith_short_12: N3MVJKZPJH3X · pith_short_16: N3MVJKZPJH3XMETJ · pith_short_8: N3MVJKZP

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/N3MVJKZPJH3XMETJ6D7R4YBJZR \
  | 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: 6ed954ab2f49f7761269f0ff1e6029cc6a9e8657853f9f382188f01e06ac7a7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc94074989157ae47e797cddc1e4b9c0406e392d76d1d24d7b50400fb9fe8498",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-26T22:52:02Z",
    "title_canon_sha256": "2132556dec204e80a9dc917b2ec03040838daca8616619a009c9ef092627aa87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402652",
    "kind": "arxiv",
    "version": 1
  }
}