Pith Number

pith:AG2LUWNA

pith:1997:AG2LUWNA3K5NNEMDSLFESASTWV

not attested not anchored not stored refs pending

The APM Galaxy Survey:- V. Catalogues of Galaxy Clusters

Gavin Dalton, George Efstathiou, Steve Maddox, Will Sutherland

arxiv:astro-ph/9701180 v1 · 1997-01-23 · 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{AG2LUWNA3K5NNEMDSLFESASTWV}

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	2026-05-18T01:40:18.282596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01b4ba59a0dabad6918392ca490253b56adccc6e7fb7822b4d4ce2f2d2a24b97

Aliases

arxiv: astro-ph/9701180 · arxiv_version: astro-ph/9701180v1 · doi: 10.48550/arxiv.astro-ph/9701180 · pith_short_12: AG2LUWNA3K5N · pith_short_16: AG2LUWNA3K5NNEMD · pith_short_8: AG2LUWNA

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/AG2LUWNA3K5NNEMDSLFESASTWV \
  | 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: 01b4ba59a0dabad6918392ca490253b56adccc6e7fb7822b4d4ce2f2d2a24b97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa8d4424c56e3f5e82b22d6f05ea1c8f106d979f64ca7b6037008c5b18c8f196",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-01-23T10:44:38Z",
    "title_canon_sha256": "a90f2dca667c0360e9df17aebd40862ea4b6cd10ea11cfe0629f3ec3d27dbbde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9701180",
    "kind": "arxiv",
    "version": 1
  }
}