Pith Number

pith:QY4LVGD5

pith:2002:QY4LVGD5BUX2C3QPXQFINTLUYP

not attested not anchored not stored refs pending

Origin of the "Disk-Line" Feature in the X-Ray Energy Spectrum of a Seyfert Galaxy, NGC4151

Hajime Inoue, Kazuki Takahashi, Tadayasu Dotani (ISAS)

arxiv:astro-ph/0204300 v1 · 2002-04-18 · 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{QY4LVGD5BUX2C3QPXQFINTLUYP}

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	2026-05-18T01:40:42.971526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8638ba987d0d2fa16e0fbc0a86cd74c3d17c9dc9fa91fcc45af470b380fc6eb8

Aliases

arxiv: astro-ph/0204300 · arxiv_version: astro-ph/0204300v1 · doi: 10.48550/arxiv.astro-ph/0204300 · pith_short_12: QY4LVGD5BUX2 · pith_short_16: QY4LVGD5BUX2C3QP · pith_short_8: QY4LVGD5

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/QY4LVGD5BUX2C3QPXQFINTLUYP \
  | 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: 8638ba987d0d2fa16e0fbc0a86cd74c3d17c9dc9fa91fcc45af470b380fc6eb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7a7d86a9bf61ff4a9620516b4e3fc53047ccf93888017749a1a581d962f51fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-18T02:47:17Z",
    "title_canon_sha256": "93a03080e85f03e579169582c72fc64f88f5fa3f592548a69e1445c410ac041d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204300",
    "kind": "arxiv",
    "version": 1
  }
}