Pith Number

pith:7TI7HK52

pith:1997:7TI7HK52QXMIMEYL2NF677TPSX

not attested not anchored not stored refs pending

Cooling flows and quasars: different aspects of the same phenomenon? I. Concepts

J.P. Ostriker (Princeton University Observatory), L. Ciotti (Osservatorio Astronomico di Bologna)

arxiv:astro-ph/9706281 v2 · 1997-06-27 · 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{7TI7HK52QXMIMEYL2NF677TPSX}

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	2026-07-04T16:03:05.096705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcd1f3abba85d886130bd34beffe6f95d8c16a5aa1c6637a8091295f10301cf6

Aliases

arxiv: astro-ph/9706281 · arxiv_version: astro-ph/9706281v2 · doi: 10.48550/arxiv.astro-ph/9706281 · pith_short_12: 7TI7HK52QXMI · pith_short_16: 7TI7HK52QXMIMEYL · pith_short_8: 7TI7HK52

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/7TI7HK52QXMIMEYL2NF677TPSX \
  | 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: fcd1f3abba85d886130bd34beffe6f95d8c16a5aa1c6637a8091295f10301cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cb625ff5586614e0bbbd88791f75e1fbdd537f3fa08c79d29740dcd5d0dcace",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-06-27T11:56:33Z",
    "title_canon_sha256": "d540ef3fcb88cbb70127c37f0846eaee61ca9570bb53d409608a089031c2117e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9706281",
    "kind": "arxiv",
    "version": 2
  }
}