Pith Number

pith:IYWRW75J

pith:2004:IYWRW75JS2IVQDUUFCQBQSWE6M

not attested not anchored not stored refs pending

X-ray Survey Results on Active Galaxy Physics and Evolution

C. Vignali (Oss. Ast. Bologna), D.M. Alexander (Cambridge IoA), F.E. Bauer (Cambridge IoA), W.N. Brandt (Penn State)

arxiv:astro-ph/0403646 v1 · 2004-03-28 · 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{IYWRW75JS2IVQDUUFCQBQSWE6M}

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	2026-05-18T01:40:37.196217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

462d1b7fa99691580e9428a0184ac4f3395838c69575028ef5735c287f26182c

Aliases

arxiv: astro-ph/0403646 · arxiv_version: astro-ph/0403646v1 · doi: 10.48550/arxiv.astro-ph/0403646 · pith_short_12: IYWRW75JS2IV · pith_short_16: IYWRW75JS2IVQDUU · pith_short_8: IYWRW75J

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/IYWRW75JS2IVQDUUFCQBQSWE6M \
  | 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: 462d1b7fa99691580e9428a0184ac4f3395838c69575028ef5735c287f26182c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2f1f4f8ace5efbf72e460b6aa9b101399cf3f4888e4fc91218f1c936f8d0ada",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-03-28T21:37:52Z",
    "title_canon_sha256": "2cce33ae3624b4907c55f1e305753f431a441a99d11bef81a267cdab50f69356"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0403646",
    "kind": "arxiv",
    "version": 1
  }
}