Pith Number

pith:Q657YG5A

pith:2000:Q657YG5A43OLYFE6RJ4ASHK4PM

not attested not anchored not stored refs pending

An XMM-Newton study of the sub-structure in M87's halo

D.M. Worrall, E. Belsole, G. Stewart, H. Bohringer, I. Sakelliou, J. Kennea, J.L. Sauvageot, K. Matsushita, M. Ehle, R.F. Mushotzky, S. Molendi, W. T. Vestrand

arxiv:astro-ph/0011357 v1 · 2000-11-20 · 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{Q657YG5A43OLYFE6RJ4ASHK4PM}

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	2026-05-18T04:21:42.428138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87bbfc1ba0e6dcbc149e8a78091d5c7b16e67450cb7ef1ebf083e4cb3da3c102

Aliases

arxiv: astro-ph/0011357 · arxiv_version: astro-ph/0011357v1 · doi: 10.48550/arxiv.astro-ph/0011357 · pith_short_12: Q657YG5A43OL · pith_short_16: Q657YG5A43OLYFE6 · pith_short_8: Q657YG5A

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/Q657YG5A43OLYFE6RJ4ASHK4PM \
  | 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: 87bbfc1ba0e6dcbc149e8a78091d5c7b16e67450cb7ef1ebf083e4cb3da3c102

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dcc72451466d01fb1780c38bac7850ec26f88ef59141a145ee2b7bc34fa630a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-20T10:03:43Z",
    "title_canon_sha256": "ed944db255e81d8d70fdd987fc405b97207b7476748a396ff07e5b370e3f5870"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011357",
    "kind": "arxiv",
    "version": 1
  }
}