Pith Number

pith:6HG5OAYC

pith:2004:6HG5OAYC76UTKURDFSMDLC4AZV

not attested not anchored not stored refs pending

Galaxy groups in the 2dFGRS: the luminous content of the groups

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/0402566 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{6HG5OAYC76UTKURDFSMDLC4AZV}

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	2026-05-18T04:27:04.626770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1cdd70302ffa93552232c98358b80cd678b577f2014f86c1f43e2b589e8a2a2

Aliases

arxiv: astro-ph/0402566 · arxiv_version: astro-ph/0402566v2 · doi: 10.48550/arxiv.astro-ph/0402566 · pith_short_12: 6HG5OAYC76UT · pith_short_16: 6HG5OAYC76UTKURD · pith_short_8: 6HG5OAYC

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/6HG5OAYC76UTKURDFSMDLC4AZV \
  | 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: f1cdd70302ffa93552232c98358b80cd678b577f2014f86c1f43e2b589e8a2a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "673c8f36083eb4b64b4ef0311618550b90af8932c79b52a03ef99b7bbe6e4569",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-24T14:33:42Z",
    "title_canon_sha256": "639d088820776f11b97273408c841a55c9a2f06f0428fd52be01bcfe82125514"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402566",
    "kind": "arxiv",
    "version": 2
  }
}