Pith Number

pith:G2GSJOUT

pith:1999:G2GSJOUTFLKUPHAHSGOJN7Q3BT

not attested not anchored not stored refs pending

Testing Narrow-line Seyfert 1 scenarios with photoionization models

Janek Meerschweinchen (Obernkirchen), Stefanie Komossa (MPE Garching)

arxiv:astro-ph/9907373 v1 · 1999-07-27 · 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{G2GSJOUTFLKUPHAHSGOJN7Q3BT}

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	2026-05-18T00:40:29.167979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

368d24ba932ad5479c07919c96fe1b0ccf11c7503762933534ea548c75a9b9cf

Aliases

arxiv: astro-ph/9907373 · arxiv_version: astro-ph/9907373v1 · doi: 10.48550/arxiv.astro-ph/9907373 · pith_short_12: G2GSJOUTFLKU · pith_short_16: G2GSJOUTFLKUPHAH · pith_short_8: G2GSJOUT

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/G2GSJOUTFLKUPHAHSGOJN7Q3BT \
  | 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: 368d24ba932ad5479c07919c96fe1b0ccf11c7503762933534ea548c75a9b9cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7672c4ce1131c5be6cc6a51d56723b495a844f14e6ff152e6ab4582d8c8019f5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-27T08:10:20Z",
    "title_canon_sha256": "4c3012c5773f839bfabe0a5ff30815dea6fbf7c55063c76246137aa066f9a80c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907373",
    "kind": "arxiv",
    "version": 1
  }
}