Pith Number

pith:BQFV6CXF

pith:2018:BQFV6CXFUQ7ZAHHKVQEXF3XPZ5

not attested not anchored not stored refs pending

Blooming Trees: Substructures and Surrounding Groups of Galaxy Clusters

Ana Laura Serra, Antonaldo Diaferio, Heng Yu, Marco Baldi

arxiv:1805.12306 v2 · 2018-05-31 · astro-ph.GA · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BQFV6CXFUQ7ZAHHKVQEXF3XPZ5}

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	2026-05-18T00:12:48.016701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c0b5f0ae5a43f901ceaac0972eeefcf61af692013056419976395b4f7b56ee9

Aliases

arxiv: 1805.12306 · arxiv_version: 1805.12306v2 · doi: 10.48550/arxiv.1805.12306 · pith_short_12: BQFV6CXFUQ7Z · pith_short_16: BQFV6CXFUQ7ZAHHK · pith_short_8: BQFV6CXF

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/BQFV6CXFUQ7ZAHHKVQEXF3XPZ5 \
  | 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: 0c0b5f0ae5a43f901ceaac0972eeefcf61af692013056419976395b4f7b56ee9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "936b750b7af8478aa1686d2140e86f72dafb5a17354d31e67cbef738f60d28d0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-31T03:24:26Z",
    "title_canon_sha256": "ed13ccb14350292ebc150d765d82b09e6cb6024808b3f44cca06cc229ff98d56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.12306",
    "kind": "arxiv",
    "version": 2
  }
}