Pith Number

pith:HKS5VALQ

pith:2007:HKS5VALQ6XAC2FN3QHSLAPKGBV

not attested not anchored not stored refs pending

The XMM large scale structure survey: optical vs. X-ray classifications of active galactic nuclei and the unified scheme

A. Corral, A. Schwope, C. Lonsdale, D. Maccagni, E. Gosset, F. J. Carrera, F. Pacaud, I. Gavignaud, J. A. Tedds, J. Ebrero, J. Surdej, L. Chiappetti, M. J. Page, M. Krumpe, M. Pierre, M. Polletta, M. Tajer, M. Watson, O. Garcet, O. Le Fevre, P. Gandhi, P. G. Sprimont, P. Vaisanen, S. Mateos, S. Rosen, T. Contini, V. Borkowski, W. Borczyk

arxiv:0709.2077 v1 · 2007-09-13 · 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{HKS5VALQ6XAC2FN3QHSLAPKGBV}

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	2026-05-18T01:24:31.239575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3aa5da8170f5c02d15bb81e4b03d460d42fb7b2a3dc0fce95c7892fc2e4bcbd4

Aliases

arxiv: 0709.2077 · arxiv_version: 0709.2077v1 · doi: 10.48550/arxiv.0709.2077 · pith_short_12: HKS5VALQ6XAC · pith_short_16: HKS5VALQ6XAC2FN3 · pith_short_8: HKS5VALQ

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/HKS5VALQ6XAC2FN3QHSLAPKGBV \
  | 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: 3aa5da8170f5c02d15bb81e4b03d460d42fb7b2a3dc0fce95c7892fc2e4bcbd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7bdc3ec0c2a8e0a2784a6def183c7a443a2382cabd5262392b5f0cbe1b1b74f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-13T14:07:52Z",
    "title_canon_sha256": "a8e4d3b946024c770b40440a50c3fe73c4d8aa0f13530020e8129c60db48f6d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2077",
    "kind": "arxiv",
    "version": 1
  }
}