Pith Number

pith:KKAE264U

pith:2004:KKAE264U7H2CY64C6DDGSBFPTT

not attested not anchored not stored refs pending

Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue

B. A. Peterson, C. Collins, C. Jackson, C. M. Baugh, C. S. Frenk, D. Madgwick, G. Dalton, G. Efstathiou, I. K. Baldry, I. Lewis, J. A. Peacock, J. Bland-Hawthorn, K. Glazebrook, K. Taylor (the 2dFGRS Team), M. Colless, O. Lahav, P. Norberg, R. Cannon, R. De Propris, R. S. Ellis, S. Cole, S. Lumsden, S. Maddox, S. P. Driver, T. Bridges, V. R. Eke, W. Couch, W. Sutherland

arxiv:astro-ph/0402567 v2 · 2004-02-24 · 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{KKAE264U7H2CY64C6DDGSBFPTT}

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	2026-05-18T04:27:04.614977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52804d7b94f9f42c7b82f0c66904af9cc13cc674980d7bef2f2c191815e307d8

Aliases

arxiv: astro-ph/0402567 · arxiv_version: astro-ph/0402567v2 · doi: 10.48550/arxiv.astro-ph/0402567 · pith_short_12: KKAE264U7H2C · pith_short_16: KKAE264U7H2CY64C · pith_short_8: KKAE264U

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/KKAE264U7H2CY64C6DDGSBFPTT \
  | 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: 52804d7b94f9f42c7b82f0c66904af9cc13cc674980d7bef2f2c191815e307d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03218a53cb0f6b2bdb38b6393adb2830965b8a275762df9cf95a8e2d294400ec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-24T14:58:46Z",
    "title_canon_sha256": "84a3dead9870f3e71d5fc6fc0e5282959107876174f4bde3534b330d99776dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402567",
    "kind": "arxiv",
    "version": 2
  }
}