Pith Number

pith:L65TU5SR

pith:2000:L65TU5SRU4ZOSGVCZJDKSBXXSO

not attested not anchored not stored refs pending

An X-ray and optical study of the cluster A33

A. Antonelli, A. Wolter, C.R. Mullis, F. Fiore, F. Matteucci, I.M. Gioia, J. Kaastra, P. Mazzotta, R. Fusco-Femiano, R. Mewe, S. Colafrancesco (1), T. Maccacaro, V. Antonuccio-Delogu, Y. Rephaeli

arxiv:astro-ph/0002224 v1 · 2000-02-10 · 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{L65TU5SRU4ZOSGVCZJDKSBXXSO}

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	2026-07-04T23:57:13.059840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fbb3a7651a732e91aa2ca46a906f7938bbc3a9d8d5d250671935eea614c6cce

Aliases

arxiv: astro-ph/0002224 · arxiv_version: astro-ph/0002224v1 · doi: 10.48550/arxiv.astro-ph/0002224 · pith_short_12: L65TU5SRU4ZO · pith_short_16: L65TU5SRU4ZOSGVC · pith_short_8: L65TU5SR

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/L65TU5SRU4ZOSGVCZJDKSBXXSO \
  | 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: 5fbb3a7651a732e91aa2ca46a906f7938bbc3a9d8d5d250671935eea614c6cce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00c2cd9fe6665d63d9019f3925355fa8d81f65a7dc17150aeac73237a086641a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-10T12:32:17Z",
    "title_canon_sha256": "230c155e1dd9e4fc2b9c99422ac5f9ac1aa53152c360c17a6e2dfb854961de3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002224",
    "kind": "arxiv",
    "version": 1
  }
}