Pith Number

pith:QBBAOUQG

pith:2001:QBBAOUQGOVZEOQXF7QEJT3P4JA

not attested not anchored not stored refs pending

The properties of the X-ray holes in the intracluster medium of the Perseus cluster

A. Celotti, A.C. Fabian, K.M. Blundell, N.E. Kassim, R.A. Perley

arxiv:astro-ph/0111418 v1 · 2001-11-21 · 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{QBBAOUQGOVZEOQXF7QEJT3P4JA}

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	2026-07-04T15:49:47.958013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

804207520675724742e5fc0899edfc481e6fd41f1ded3b741403d85197c05075

Aliases

arxiv: astro-ph/0111418 · arxiv_version: astro-ph/0111418v1 · doi: 10.48550/arxiv.astro-ph/0111418 · pith_short_12: QBBAOUQGOVZE · pith_short_16: QBBAOUQGOVZEOQXF · pith_short_8: QBBAOUQG

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/QBBAOUQGOVZEOQXF7QEJT3P4JA \
  | 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: 804207520675724742e5fc0899edfc481e6fd41f1ded3b741403d85197c05075

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0978169c9f5928dddc81e2578f05f32dfbf83efb573ef0d557915053c19be71a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-11-21T16:31:37Z",
    "title_canon_sha256": "86163a0fc431f367cf018f92161e25b6b60adc3f7c537b48023ff173a75fcb74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0111418",
    "kind": "arxiv",
    "version": 1
  }
}