Pith Number

pith:RK6XSX5S

pith:1999:RK6XSX5SGGY2MRDMX2QCYUZCBD

not attested not anchored not stored refs pending

Spectroscopic Observations of Optically Selected Clusters of Galaxies from the Palomar Distant Cluster Survey

A. K. Romer, A. Metevier, B. P. Holden, L. M. Lubin, M. Postman, M. P Ulmer, R. C. Nichol

arxiv:astro-ph/9907429 v1 · 1999-07-29 · 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{RK6XSX5SGGY2MRDMX2QCYUZCBD}

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	2026-07-04T16:11:28.927521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8abd795fb231b1a6446cbea02c532208d671593b1c08b71e8be9478aa63d8658

Aliases

arxiv: astro-ph/9907429 · arxiv_version: astro-ph/9907429v1 · doi: 10.48550/arxiv.astro-ph/9907429 · pith_short_12: RK6XSX5SGGY2 · pith_short_16: RK6XSX5SGGY2MRDM · pith_short_8: RK6XSX5S

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/RK6XSX5SGGY2MRDMX2QCYUZCBD \
  | 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: 8abd795fb231b1a6446cbea02c532208d671593b1c08b71e8be9478aa63d8658

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "709bcbef592b4c31115e7fcdeb8149f34c1231d706f9736b4d7bc3939f57da38",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-29T22:13:08Z",
    "title_canon_sha256": "141d0f1ec06d4cc0655c1a942a13f304189b90623b43f6180836a7173b793538"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907429",
    "kind": "arxiv",
    "version": 1
  }
}