Pith Number

pith:JKHNNOSU

pith:1998:JKHNNOSU74XFA5SYYLHKNXY3D5

not attested not anchored not stored refs pending

The ASCA spectrum of the z=4.72 blazar, GB 1428+4217

A. Celotti, A.C. Fabian, I.M. Hook, K. Iwasawa, R.G. McMahon, W.N. Brandt

arxiv:astro-ph/9801288 v1 · 1998-01-28 · 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{JKHNNOSU74XFA5SYYLHKNXY3D5}

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	2026-07-04T16:06:07.265427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a8ed6ba54ff2e507658c2cea6df1b1f4772e848e1f1266a42bc9253cc98faf7

Aliases

arxiv: astro-ph/9801288 · arxiv_version: astro-ph/9801288v1 · doi: 10.48550/arxiv.astro-ph/9801288 · pith_short_12: JKHNNOSU74XF · pith_short_16: JKHNNOSU74XFA5SY · pith_short_8: JKHNNOSU

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/JKHNNOSU74XFA5SYYLHKNXY3D5 \
  | 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: 4a8ed6ba54ff2e507658c2cea6df1b1f4772e848e1f1266a42bc9253cc98faf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e991657e4e75d54e9a081853d5f3be985215bf9ac656e7ec906bfa99118fc3eb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-01-28T17:21:44Z",
    "title_canon_sha256": "8b6092dec84e25fb86f1d5815be5afe7350951e65e3b7a98b04f20fc185c86d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9801288",
    "kind": "arxiv",
    "version": 1
  }
}