Pith Number

pith:ZNT4UOBX

pith:2006:ZNT4UOBXORKJTXQQHEVYHTT3DC

not attested not anchored not stored refs pending

An X-ray bright ERO hosting a type 2 QSO

A. Caccianiga, F.J. Carrera, M. Akiyama, M.G. Watson, M. J. Page, M. T. Ceballos, P. Saracco, P. Severgnini, R. Della Ceca, T. Maccacaro, V. Braito

arxiv:astro-ph/0602486 v1 · 2006-02-22 · 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{ZNT4UOBXORKJTXQQHEVYHTT3DC}

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	2026-07-04T16:58:01.759505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb67ca3837745499de10392b83ce7b188bdecd7b93e976e210f51b577b5aa97b

Aliases

arxiv: astro-ph/0602486 · arxiv_version: astro-ph/0602486v1 · doi: 10.48550/arxiv.astro-ph/0602486 · pith_short_12: ZNT4UOBXORKJ · pith_short_16: ZNT4UOBXORKJTXQQ · pith_short_8: ZNT4UOBX

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/ZNT4UOBXORKJTXQQHEVYHTT3DC \
  | 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: cb67ca3837745499de10392b83ce7b188bdecd7b93e976e210f51b577b5aa97b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaa7b99163a38cfea9840e96c2ea7e32b3a21ab2fd1c6b8323ccb015f04c140b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-02-22T12:04:47Z",
    "title_canon_sha256": "73c28df166938a2d47b5f3a2b3c33e354ecfd7602b662f28b2fff3080bea8217"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0602486",
    "kind": "arxiv",
    "version": 1
  }
}