Pith Number

pith:ZBJ2T357

pith:2002:ZBJ2T357YTZD2KAOZGBG43SZPR

not attested not anchored not stored refs pending

X-ray spectroscopy of NGC 5548

A.C. Brinkman, A. De Rosa, A.J.J. Raassen, D.A. Liedahl, E. Behar, J.S. Kaastra, K.C. Steenbrugge, R.L.J. van der Meer

arxiv:astro-ph/0202481 v1 · 2002-02-26 · 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{ZBJ2T357YTZD2KAOZGBG43SZPR}

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	2026-07-04T16:29:27.984181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c853a9efbfc4f23d280ec9826e6e597c7d85001c3132a63d8dd5020aa6985e4b

Aliases

arxiv: astro-ph/0202481 · arxiv_version: astro-ph/0202481v1 · doi: 10.48550/arxiv.astro-ph/0202481 · pith_short_12: ZBJ2T357YTZD · pith_short_16: ZBJ2T357YTZD2KAO · pith_short_8: ZBJ2T357

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/ZBJ2T357YTZD2KAOZGBG43SZPR \
  | 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: c853a9efbfc4f23d280ec9826e6e597c7d85001c3132a63d8dd5020aa6985e4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ca7278f9b163d5b2f78b9bf2a8c7b5f651f6cab68704a44decceade52d922f1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-26T11:55:35Z",
    "title_canon_sha256": "63eefd84e2b0d3d0c3dac7f571c711184f386fb736978eef8ae4d9f842f7f744"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202481",
    "kind": "arxiv",
    "version": 1
  }
}