Pith Number

pith:WM4ER52T

pith:2000:WM4ER52TTDW2M6LYNHJIYPH67K

not attested not anchored not stored refs pending

The 2dF Galaxy Redshift Survey: The Number and Luminosity Density of Galaxies

Bruce A. Peterson, Carlos S. Frenk, Carlton M. Baugh, Carole Jackson, Chris Collins, Darren Madgwick, Gavin Dalton, George Efstathiou, Helen Tadros, Ian Lewis, Ian Price, John A. Peacock, Joss Bland-Hawthorn, Karl Glazebrook, Kathryn Deeley, Keith Taylor, Mark Seaborne, Matthew Colless, Nicholas Cross (St Andrews), Ofer Lahav, Peder Norberg, Richard S. Ellis, Roberto De Propris, Russell Cannon, Shaun Cole, Simon P. Driver, Stephen Moody, Steve Maddox, Stuart Lumsden, Terry Bridges, Warrick Couch, Will Sutherland

arxiv:astro-ph/0012165 v2 · 2000-12-07 · 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{WM4ER52TTDW2M6LYNHJIYPH67K}

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	2026-05-18T04:27:05.535734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b33848f75398eda6797869d28c3cfefabe0f2df22d00ff4c66d90ad8f7369d3e

Aliases

arxiv: astro-ph/0012165 · arxiv_version: astro-ph/0012165v2 · doi: 10.48550/arxiv.astro-ph/0012165 · pith_short_12: WM4ER52TTDW2 · pith_short_16: WM4ER52TTDW2M6LY · pith_short_8: WM4ER52T

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/WM4ER52TTDW2M6LYNHJIYPH67K \
  | 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: b33848f75398eda6797869d28c3cfefabe0f2df22d00ff4c66d90ad8f7369d3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac7699de47612cec41d6178d6e741a37f42f7c92f0d02802d36bd9b5dc188d76",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-12-07T18:16:08Z",
    "title_canon_sha256": "6064cb9c37c1528d417f10edecc8a92c1980e3a27f7219a65d02534c6acefc85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0012165",
    "kind": "arxiv",
    "version": 2
  }
}