Pith Number

pith:YAI7F552

pith:2003:YAI7F552PB2AR6RQ6X4YOQEULQ

not attested not anchored not stored refs pending

Ghosts of the Milky Way: a search for topology in new quasar catalogues

(2) AAO, (3) Liverpool John Moores, (4) Durham, (5) Oxford), B.J. Boyle (2), L. Millar (5), M.P. Baltovic (1) ((1) Imperial College London, R.J. Smith (3), S.J. Warren (1), S.J. Weatherley (1), S.M. Croom (2), T. Shanks (4)

arxiv:astro-ph/0304290 v1 · 2003-04-15 · 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{YAI7F552PB2AR6RQ6X4YOQEULQ}

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	2026-05-18T04:27:04.841738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c011f2f7ba787408fa30f5f98740945c04fa35da94c5b1080500c037ffe93f0a

Aliases

arxiv: astro-ph/0304290 · arxiv_version: astro-ph/0304290v1 · doi: 10.48550/arxiv.astro-ph/0304290 · pith_short_12: YAI7F552PB2A · pith_short_16: YAI7F552PB2AR6RQ · pith_short_8: YAI7F552

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/YAI7F552PB2AR6RQ6X4YOQEULQ \
  | 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: c011f2f7ba787408fa30f5f98740945c04fa35da94c5b1080500c037ffe93f0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "631beb4db5faf6763db08f5fb744551d01b4ac268046b97763cd17b831997f0e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-15T20:02:03Z",
    "title_canon_sha256": "8d443d5acdb0c682c171e41441f719e132214141d92521e811226d146a0f28a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304290",
    "kind": "arxiv",
    "version": 1
  }
}