Pith Number

pith:JT7DQECE

pith:2002:JT7DQECENCTDOAEY5JH3OJJRAM

not attested not anchored not stored refs pending

A Chandra observation of the distant radio galaxy B2 0902+343: a powerful obscured active galaxy

A. C. Fabian, Cambridge), C. S. Crawford, K. Iwasawa (IoA

arxiv:astro-ph/0202449 v1 · 2002-02-25 · 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{JT7DQECENCTDOAEY5JH3OJJRAM}

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	2026-07-04T16:29:27.542905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4cfe38104468a6370098ea4fb725310328ae589873facb6c440c8b4328cca728

Aliases

arxiv: astro-ph/0202449 · arxiv_version: astro-ph/0202449v1 · doi: 10.48550/arxiv.astro-ph/0202449 · pith_short_12: JT7DQECENCTD · pith_short_16: JT7DQECENCTDOAEY · pith_short_8: JT7DQECE

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/JT7DQECENCTDOAEY5JH3OJJRAM \
  | 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: 4cfe38104468a6370098ea4fb725310328ae589873facb6c440c8b4328cca728

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3117cd237df3a03d8ffa4a32e094e6021388d5ed38629d6d7f4f75f1744e563f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-25T13:59:05Z",
    "title_canon_sha256": "9600014a6ab806b55bb4d7ffb6ddbbc87da1a47787b9f05aa473ef68a5f15b2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202449",
    "kind": "arxiv",
    "version": 1
  }
}