Pith Number

pith:AAQNNNDS

pith:2001:AAQNNNDS64P5XSVFQDBZFKV57Q

not attested not anchored not stored refs pending

High Resolution X-ray Spectroscopy of Seyfert 2 Galaxies

A.C. Brinkman, A. Kinkhabwala, D.A. Liedahl, E. Behar, F.B.S. Paerels, J.S. Kaastra, M. Sako, R. van der Meer, S.M. Kahn

arxiv:astro-ph/0107225 v1 · 2001-07-12 · 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{AAQNNNDS64P5XSVFQDBZFKV57Q}

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	2026-07-04T14:11:22.654099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0020d6b472f71fdbcaa580c392aabdfc34bec920ebf196be131dd0a666ebe62a

Aliases

arxiv: astro-ph/0107225 · arxiv_version: astro-ph/0107225v1 · doi: 10.48550/arxiv.astro-ph/0107225 · pith_short_12: AAQNNNDS64P5 · pith_short_16: AAQNNNDS64P5XSVF · pith_short_8: AAQNNNDS

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/AAQNNNDS64P5XSVFQDBZFKV57Q \
  | 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: 0020d6b472f71fdbcaa580c392aabdfc34bec920ebf196be131dd0a666ebe62a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25af70a68624c31d9c68daa9d6ffb2e41c1f8f69c2ada808f78e862128380d87",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-12T21:21:10Z",
    "title_canon_sha256": "ab466c1391bc3e2382cf52452ba96463f95af6ef90fe26b0395ce518ebdec34a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107225",
    "kind": "arxiv",
    "version": 1
  }
}