Pith Number

pith:Q74I3FFW

pith:1995:Q74I3FFWKXLPTXKSNED3IW6DNZ

not attested not anchored not stored refs pending

GALAXY DYNAMICS IN CLUSTERS

A.E. Evrard, C.S. Frenk, S.D.M. White & FJ Summers

arxiv:astro-ph/9504020 v1 · 1995-04-06 · 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{Q74I3FFWKXLPTXKSNED3IW6DNZ}

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	2026-07-04T15:51:44.525580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87f88d94b655d6f9dd526907b45bc36e577bed24628fced983edbdda73d1dd49

Aliases

arxiv: astro-ph/9504020 · arxiv_version: astro-ph/9504020v1 · doi: 10.48550/arxiv.astro-ph/9504020 · pith_short_12: Q74I3FFWKXLP · pith_short_16: Q74I3FFWKXLPTXKS · pith_short_8: Q74I3FFW

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/Q74I3FFWKXLPTXKSNED3IW6DNZ \
  | 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: 87f88d94b655d6f9dd526907b45bc36e577bed24628fced983edbdda73d1dd49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2969b95882378588f7d7a9bdb6604f385a0bee4c8f238d0285f60636b89c7f8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-04-06T16:51:28Z",
    "title_canon_sha256": "c584cb7fd1ba1af2e4c108354d75a3e2318462c2df831d6d9ec711e6f1748bdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9504020",
    "kind": "arxiv",
    "version": 1
  }
}