Pith Number

pith:4OBQGPOO

pith:2002:4OBQGPOOTHEEJMWOJ5Z3ZQYNEW

not attested not anchored not stored refs pending

Are X-ray Clusters Cooled by Heat Conduction to the Surrounding Intergalactic Medium?

Abraham Loeb (Harvard University)

arxiv:astro-ph/0203450 v2 · 2002-03-26 · 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{4OBQGPOOTHEEJMWOJ5Z3ZQYNEW}

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	2026-05-18T01:40:43.090307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e383033dce99c844b2ce4f73bcc30d25a9262c7b3def4aaf8a8850a1e8f551c6

Aliases

arxiv: astro-ph/0203450 · arxiv_version: astro-ph/0203450v2 · doi: 10.48550/arxiv.astro-ph/0203450 · pith_short_12: 4OBQGPOOTHEE · pith_short_16: 4OBQGPOOTHEEJMWO · pith_short_8: 4OBQGPOO

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/4OBQGPOOTHEEJMWOJ5Z3ZQYNEW \
  | 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: e383033dce99c844b2ce4f73bcc30d25a9262c7b3def4aaf8a8850a1e8f551c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb8626b2715b71dee0b977d4ca310d8a5074ba9f2f4803a745003de51a5f6438",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-26T05:27:19Z",
    "title_canon_sha256": "128425d535353ce9b847a1e4eb4396339f1b7232a31b9046daed742afd548b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0203450",
    "kind": "arxiv",
    "version": 2
  }
}