Pith Number

pith:VX7G53SU

pith:2015:VX7G53SUOX5YTKDA5KLFRERKFF

not attested not anchored not stored refs pending

Ophiuchus: an optical view of a very massive cluster of galaxies hidden behind the Milky Way

Andrea Biviano, Christophe Adami, Florence Durret, Ken-ichi Wakamatsu, Takahiro Nagayama

arxiv:1509.00986 v1 · 2015-09-03 · 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{VX7G53SUOX5YTKDA5KLFRERKFF}

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	2026-05-18T01:28:03.216309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adfe6eee5475fb89a860ea9658922a296418d45a801025c51e2ef033994e2781

Aliases

arxiv: 1509.00986 · arxiv_version: 1509.00986v1 · doi: 10.48550/arxiv.1509.00986 · pith_short_12: VX7G53SUOX5Y · pith_short_16: VX7G53SUOX5YTKDA · pith_short_8: VX7G53SU

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/VX7G53SUOX5YTKDA5KLFRERKFF \
  | 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: adfe6eee5475fb89a860ea9658922a296418d45a801025c51e2ef033994e2781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13fe7bdbdc41d88f2871b39de7ba0984a2b7abb4e0e801f282906d1738595c88",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-09-03T08:46:28Z",
    "title_canon_sha256": "699c5646d86755e6a2687a3c3a6d8692b96866147070a461c5c75ba496b1f8e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.00986",
    "kind": "arxiv",
    "version": 1
  }
}