Pith Number

pith:OEGCMSBN

pith:1997:OEGCMSBN4DZRVRISBUV2Z3RVAQ

not attested not anchored not stored refs pending

Galaxy clusters in the Perseus-Pisces region - I. Spectroscopic and photometric data for early-type galaxies

2), (2) University of Victoria), J.R. Lucey (1), J. Steel (1) ((1) University of Durham, M.J. Hudson (1, R.J. Smith (1)

arxiv:astro-ph/9707025 v1 · 1997-07-02 · 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{OEGCMSBN4DZRVRISBUV2Z3RVAQ}

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	2026-05-18T01:40:17.152265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

710c26482de0f31ac5120d2bacee35042288ef1fca02d22e985dba35442cc58e

Aliases

arxiv: astro-ph/9707025 · arxiv_version: astro-ph/9707025v1 · doi: 10.48550/arxiv.astro-ph/9707025 · pith_short_12: OEGCMSBN4DZR · pith_short_16: OEGCMSBN4DZRVRIS · pith_short_8: OEGCMSBN

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/OEGCMSBN4DZRVRISBUV2Z3RVAQ \
  | 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: 710c26482de0f31ac5120d2bacee35042288ef1fca02d22e985dba35442cc58e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6b9c6a68cd833c5f9a5f85249223ec0fa30c8d82b733e01b19abab3a65a589d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-02T16:23:44Z",
    "title_canon_sha256": "d386e3d47343a346470af5984d98bafe0ac313f516e4fe6f8012ffe825abb072"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707025",
    "kind": "arxiv",
    "version": 1
  }
}