Pith Number

pith:IX4P75WX

pith:2011:IX4P75WXHOJXZ4OH3RTQXSY6SM

not attested not anchored not stored refs pending

Clustering of obscured and unobscured quasars in the Bootes field: Placing rapidly growing black holes in the cosmic web

Adam D. Myers, Andrew D. Goulding, Arjun Dey, Buell T. Jannuzi, Christine Jones, Christopher S. Kochanek, Daniel Eisenstein, Daniel Stern, David M. Alexander, Emeric Le Floc'h, James R. Mullaney, Mark Brodwin, Michael J. I. Brown, Nelson Caldwell, Peter R. Eisenhardt, Richard J. Cool, Roberto J. Assef, Ryan C. Hickox, Stephen S. Murray, Varoujan Gorjian, William R. Forman

arxiv:1102.4850 v1 · 2011-02-23 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IX4P75WXHOJXZ4OH3RTQXSY6SM}

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	2026-05-18T02:03:05.793876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45f8fff6d73b937cf1c7dc670bcb1e933a44d930de2292ecaf24e70797ee12d3

Aliases

arxiv: 1102.4850 · arxiv_version: 1102.4850v1 · doi: 10.48550/arxiv.1102.4850 · pith_short_12: IX4P75WXHOJX · pith_short_16: IX4P75WXHOJXZ4OH · pith_short_8: IX4P75WX

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/IX4P75WXHOJXZ4OH3RTQXSY6SM \
  | 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: 45f8fff6d73b937cf1c7dc670bcb1e933a44d930de2292ecaf24e70797ee12d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40201f47ff4d6ea39724c7500158981c21c94bf77bc0991c5f55b960f798533d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-02-23T21:00:04Z",
    "title_canon_sha256": "654aee5ab526e7ee119e934aec27668dc10ad340e3ae15f9312613ce7d5cd918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4850",
    "kind": "arxiv",
    "version": 1
  }
}