Pith Number

pith:FQ23SVNK

pith:2006:FQ23SVNK6FXFBZYVLCIN7FVUW3

not attested not anchored not stored refs pending

XMM-Newton and Chandra observations of SHEEP sources

A. Georgakakis (Imperial College), I.E. Papadakis (University of Crete), I. Georgantopoulos (National Observatory of Athens), K. Nandra (Imperial College), M. Brotherton (University of Wyoming & Kitt Peak National Observatory), P. O'Neill (Imperial College)

arxiv:astro-ph/0601245 v1 · 2006-01-11 · 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{FQ23SVNK6FXFBZYVLCIN7FVUW3}

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	2026-05-18T01:07:25.599149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c35b955aaf16e50e7155890df96b4b6ceb536a71e0eb9d298c1e171f5104785

Aliases

arxiv: astro-ph/0601245 · arxiv_version: astro-ph/0601245v1 · doi: 10.48550/arxiv.astro-ph/0601245 · pith_short_12: FQ23SVNK6FXF · pith_short_16: FQ23SVNK6FXFBZYV · pith_short_8: FQ23SVNK

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/FQ23SVNK6FXFBZYVLCIN7FVUW3 \
  | 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: 2c35b955aaf16e50e7155890df96b4b6ceb536a71e0eb9d298c1e171f5104785

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e1cc76e7e3bee1769318043738872791a097d92e499f6a484a3c05ebade3e29",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-01-11T16:16:07Z",
    "title_canon_sha256": "b00599ad8e0406e10fb0c57b4a6c49ada7e19ad867f69b2c8b20cc79a9701e61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0601245",
    "kind": "arxiv",
    "version": 1
  }
}