Pith Number

pith:AYZ3A6SM

pith:1998:AYZ3A6SM2OQBSBIL5QVDOSXJV2

not attested not anchored not stored refs pending

Does the thermal disc instability operate in active galactic nuclei?

2), (2) Astronomy Group, A. R. King (2), E. Szuszkiewicz (2) ((1) Istituto di Fisica dell'Universita' di Palermo, L. Burderi (1, University of Leicester)

arxiv:astro-ph/9803224 v1 · 1998-03-19 · 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{AYZ3A6SM2OQBSBIL5QVDOSXJV2}

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	2026-05-18T01:40:14.263501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0633b07a4cd3a019050bec2a374ae9aea5161ec28c0fbab429b7c68e697cd6f3

Aliases

arxiv: astro-ph/9803224 · arxiv_version: astro-ph/9803224v1 · doi: 10.48550/arxiv.astro-ph/9803224 · pith_short_12: AYZ3A6SM2OQB · pith_short_16: AYZ3A6SM2OQBSBIL · pith_short_8: AYZ3A6SM

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/AYZ3A6SM2OQBSBIL5QVDOSXJV2 \
  | 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: 0633b07a4cd3a019050bec2a374ae9aea5161ec28c0fbab429b7c68e697cd6f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fda7097c0aabb8b5c0892b5bd0917869ad9553cc476741fe910e75df2e1dc84",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-03-19T09:43:32Z",
    "title_canon_sha256": "9a6f74d6d9e89bfb7929c872e9c0847c7953eae5da059b4bbee847e9615520c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9803224",
    "kind": "arxiv",
    "version": 1
  }
}