Pith Number

pith:6AP7GWCA

pith:2010:6AP7GWCAE6OPAFPV2D4IA5TRXL

not attested not anchored not stored refs pending

Constraints on black hole duty cycles and the black hole-halo relation from SDSS quasar clustering

2-OSU, 3-CfA), David H. Weinberg (2), Francesco Shankar (1), Yue Shen (3) (1-MPA

arxiv:1004.1173 v1 · 2010-04-07 · 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{6AP7GWCAE6OPAFPV2D4IA5TRXL}

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	2026-05-18T02:08:08.253003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f01ff35840279cf015f5d0f8807671bac5c2a92732606b084b6d5258196b5441

Aliases

arxiv: 1004.1173 · arxiv_version: 1004.1173v1 · doi: 10.48550/arxiv.1004.1173 · pith_short_12: 6AP7GWCAE6OP · pith_short_16: 6AP7GWCAE6OPAFPV · pith_short_8: 6AP7GWCA

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/6AP7GWCAE6OPAFPV2D4IA5TRXL \
  | 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: f01ff35840279cf015f5d0f8807671bac5c2a92732606b084b6d5258196b5441

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28ea2e6ac67812da7c1b1edd0d6bf024d45e1d94fe220274382c4fde33956dae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-07T20:02:34Z",
    "title_canon_sha256": "82e097994e940ed86be2f636348b00006366d7ccdb625f426680bb871f42b64c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1173",
    "kind": "arxiv",
    "version": 1
  }
}