Pith Number

pith:PBSZ6NW5

pith:2017:PBSZ6NW524CEVL5MXLBDOPM7DV

not attested not anchored not stored refs pending

Merging groups and clusters of galaxies from the SDSS data. The catalogue of groups and potentially merging systems

Elmo Tempel, Noam I. Libeskind, Rain Kipper, Taavi Tuvikene

arxiv:1704.04477 v1 · 2017-04-14 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBSZ6NW524CEVL5MXLBDOPM7DV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:41:59.293352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78659f36ddd7044aafacbac2373d9f1d56f09aa1e7767dd44d0d43a7813114b3

Aliases

arxiv: 1704.04477 · arxiv_version: 1704.04477v1 · doi: 10.48550/arxiv.1704.04477 · pith_short_12: PBSZ6NW524CE · pith_short_16: PBSZ6NW524CEVL5M · pith_short_8: PBSZ6NW5

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/PBSZ6NW524CEVL5MXLBDOPM7DV \
  | 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: 78659f36ddd7044aafacbac2373d9f1d56f09aa1e7767dd44d0d43a7813114b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb7ce3b3c09b1940a0844799bf536e6dae3a0df6a0f157a832d56e45cdee4cd7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-04-14T16:38:43Z",
    "title_canon_sha256": "be60554f5224a667b425048ecea93f1ac62213c7eba2325196973e0716285609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04477",
    "kind": "arxiv",
    "version": 1
  }
}