Pith Number

pith:KAPDSJNH

pith:1998:KAPDSJNH7PPO6XEOVUZ7HBHYC6

not attested not anchored not stored refs pending

ASCA Observations of the Seyfert 2 Galaxy NGC 7582: An Obscured and Scattered View of the Hidden Nucleus

C. Otani, M. Cappi, M. Matsuoka, S.-J. Xue, T. Mihara

arxiv:astro-ph/9809086 v1 · 1998-09-08 · 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{KAPDSJNH7PPO6XEOVUZ7HBHYC6}

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	2026-05-18T01:40:13.718236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

501e3925a7fbdeef5c8ead33f384f817b326a286c4b63244a10802e4841a662f

Aliases

arxiv: astro-ph/9809086 · arxiv_version: astro-ph/9809086v1 · doi: 10.48550/arxiv.astro-ph/9809086 · pith_short_12: KAPDSJNH7PPO · pith_short_16: KAPDSJNH7PPO6XEO · pith_short_8: KAPDSJNH

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/KAPDSJNH7PPO6XEOVUZ7HBHYC6 \
  | 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: 501e3925a7fbdeef5c8ead33f384f817b326a286c4b63244a10802e4841a662f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e88d14f5c08a3b8fe7791ea2c4fbeb0a7253ad2dc35ed7d0e6fd8f1f581c358",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-08T05:04:25Z",
    "title_canon_sha256": "e872b963203ba650b61abf30fff072cff6220130c97095558d8617ab82562de6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809086",
    "kind": "arxiv",
    "version": 1
  }
}