Pith Number

pith:N4NWNRFH

pith:2018:N4NWNRFHBMTJMDEK4TVTZJK7WM

not attested not anchored not stored refs pending

A LOFAR study of non-merging massive galaxy clusters

Alexander Drabent, Amanda Wilber, Andrea Botteon, Annalisa Bonafede, David Rafferty, Federica Savini, Francesco de Gasperin, Franco Vazza, Gianfranco Brunetti, Huib Intema, Huub Roettgering, Laura Birzan, Marcus Brueggen, Martin Sommer, Reinout van Weeren, Rossella Cassano, Timothy Shimwell, Virginia Cuciti

arxiv:1811.08410 v1 · 2018-11-20 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N4NWNRFHBMTJMDEK4TVTZJK7WM}

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	2026-05-17T23:52:39.663196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f1b66c4a70b26960c8ae4eb3ca55fb31c30a83fba330a6cda27e4c6f441d07b

Aliases

arxiv: 1811.08410 · arxiv_version: 1811.08410v1 · doi: 10.48550/arxiv.1811.08410 · pith_short_12: N4NWNRFHBMTJ · pith_short_16: N4NWNRFHBMTJMDEK · pith_short_8: N4NWNRFH

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/N4NWNRFHBMTJMDEK4TVTZJK7WM \
  | 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: 6f1b66c4a70b26960c8ae4eb3ca55fb31c30a83fba330a6cda27e4c6f441d07b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32891d39ba6339edd79c8517827901e697a9707434d7357725d3fdc9edb569c5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-11-20T18:33:49Z",
    "title_canon_sha256": "a1cd06137c6347222b4455cf3ea30f4ed3f316851691c13517d1d324c6ce4413"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.08410",
    "kind": "arxiv",
    "version": 1
  }
}