Pith Number

pith:2SGQCCCZ

pith:2007:2SGQCCCZCSNOHPYKMXSZKS5FE7

not attested not anchored not stored refs pending

Elusive AGN in the XMM-Newton bright serendipitous survey

A. Caccianiga, F. J. Carrera, M. J. Page, P. Severgnini, R. Della Ceca, T. Maccacaro

arxiv:0705.2985 v1 · 2007-05-21 · 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{2SGQCCCZCSNOHPYKMXSZKS5FE7}

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	2026-07-04T17:03:54.863072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d48d010859149ae3bf0a65e5954ba527ecdf52575a3aff9e3be1e9ae524fde42

Aliases

arxiv: 0705.2985 · arxiv_version: 0705.2985v1 · doi: 10.48550/arxiv.0705.2985 · pith_short_12: 2SGQCCCZCSNO · pith_short_16: 2SGQCCCZCSNOHPYK · pith_short_8: 2SGQCCCZ

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/2SGQCCCZCSNOHPYKMXSZKS5FE7 \
  | 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: d48d010859149ae3bf0a65e5954ba527ecdf52575a3aff9e3be1e9ae524fde42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e8ab62d8c2e92e816b9db2428080998325ff6fc6a15e1db25d84215c15d0b47",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-21T14:13:48Z",
    "title_canon_sha256": "aa81ab875175ffbd904424a15028b2316713f2bc51060355b8da38a0543a11f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.2985",
    "kind": "arxiv",
    "version": 1
  }
}