Pith Number

pith:BUBCFK5I

pith:1999:BUBCFK5I3ZST6PSA47FAH6PQJV

not attested not anchored not stored refs pending

Thermal equilibrium of molecular clouds in cooling flow clusters

D. Puy, L. Grenacher, P. Jetzer (Institute of Theoretical Physics-Zurich, PSI)

arxiv:astro-ph/9902285 v1 · 1999-02-19 · 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{BUBCFK5I3ZST6PSA47FAH6PQJV}

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	2026-07-04T15:20:40.787310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d0222aba8de653f3e40e7ca03f9f04d756c891d269c0981a2aab9c65ba0b62f

Aliases

arxiv: astro-ph/9902285 · arxiv_version: astro-ph/9902285v1 · doi: 10.48550/arxiv.astro-ph/9902285 · pith_short_12: BUBCFK5I3ZST · pith_short_16: BUBCFK5I3ZST6PSA · pith_short_8: BUBCFK5I

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/BUBCFK5I3ZST6PSA47FAH6PQJV \
  | 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: 0d0222aba8de653f3e40e7ca03f9f04d756c891d269c0981a2aab9c65ba0b62f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90e4db31557b47119ec8a845a942887d1d7746c847c313bcd791e3dae8f0ac5f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-19T13:43:08Z",
    "title_canon_sha256": "0356843ae5d1060e2d400af334fb48c8a7705884b0786eeba2e6690546bb44a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902285",
    "kind": "arxiv",
    "version": 1
  }
}