Pith Number

pith:XSMJTCZD

pith:2009:XSMJTCZD6P3L4TT3PZQXICVHZW

not attested not anchored not stored refs pending

Analysis of the Properties of Clusters of Galaxies in the Region of the Ursa Major Supercluster

Alexander I. Kopylov, Flera G. Kopylova

arxiv:0912.2503 v1 · 2009-12-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XSMJTCZD6P3L4TT3PZQXICVHZW}

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	2026-05-18T04:36:33.994471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc98998b23f3f6be4e7b7e61740aa7cdb53741cb0cc6cff2f9294737552ba3ec

Aliases

arxiv: 0912.2503 · arxiv_version: 0912.2503v1 · doi: 10.48550/arxiv.0912.2503 · pith_short_12: XSMJTCZD6P3L · pith_short_16: XSMJTCZD6P3L4TT3 · pith_short_8: XSMJTCZD

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/XSMJTCZD6P3L4TT3PZQXICVHZW \
  | 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: bc98998b23f3f6be4e7b7e61740aa7cdb53741cb0cc6cff2f9294737552ba3ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0b87bde4c1e58254f9b4f69a125d9d9b878368d977b2d2a346231465ad6e1c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-13T13:29:54Z",
    "title_canon_sha256": "667369c27a26e56fb62e94ad9df54e2d1b58fd784567ff3cd294dbca5e7f20cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2503",
    "kind": "arxiv",
    "version": 1
  }
}