Pith Number

pith:RWRRG6GC

pith:1997:RWRRG6GCKEV4NPCXZE4RR6XTQ3

not attested not anchored not stored refs pending

The rich cluster of galaxies ABCG 85. II. X-ray analysis using the ROSAT HRI

D. Gerbal, E. Slezak, F. Durret, G.B. Lima Neto, V. Pislar

arxiv:astro-ph/9707020 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{RWRRG6GCKEV4NPCXZE4RR6XTQ3}

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	2026-07-04T14:15:12.153430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8da31378c2512bc6bc57c93918faf386da60d39223945e4c404b77d5d993e0e7

Aliases

arxiv: astro-ph/9707020 · arxiv_version: astro-ph/9707020v1 · doi: 10.48550/arxiv.astro-ph/9707020 · pith_short_12: RWRRG6GCKEV4 · pith_short_16: RWRRG6GCKEV4NPCX · pith_short_8: RWRRG6GC

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/RWRRG6GCKEV4NPCXZE4RR6XTQ3 \
  | 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: 8da31378c2512bc6bc57c93918faf386da60d39223945e4c404b77d5d993e0e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83a09ca03e772b2fd23d18e321e6f6745047f1262cc372f7661fd78ba7efc3ee",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-02T09:59:07Z",
    "title_canon_sha256": "e00ff0a85c6512cc205b851db1e7f4397e9d09ea63be77adf7c125cb101b18e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707020",
    "kind": "arxiv",
    "version": 1
  }
}