Pith Number

pith:OB3Z7HJT

pith:2008:OB3Z7HJTZHRBM4R6EEROC76GVK

not attested not anchored not stored refs pending

Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: II. ~1,000,000 Quasars from Data Release Six

(2) University of Illinois, (3) Georgia Tech, (4) University of Portsmouth, (5) John Hopkins University, (6) Penn State University, (7) University of Washington), Adam D. Myers (2), Alexander G. Gray (3), Alexander S. Szalay (5), Donald P. Schneider (6), Gordon T. Richards (1), Robert C. Nichol (4), Robert J. Brunner (2), Ryan N. Riegel (3), Scott F. Anderson (7) ((1) Drexel University

arxiv:0809.3952 v1 · 2008-09-23 · 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{OB3Z7HJTZHRBM4R6EEROC76GVK}

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.

Cited by

1 paper in Pith

The DESI Experiment Part I: Science,Targeting, and Survey Design

Receipt and verification

First computed	2026-05-18T02:35:14.720508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70779f9d33c9e216723e2122e17fc6aabd11a485df9c6623171bba7fe2f3fb8b

Aliases

arxiv: 0809.3952 · arxiv_version: 0809.3952v1 · doi: 10.48550/arxiv.0809.3952 · pith_short_12: OB3Z7HJTZHRB · pith_short_16: OB3Z7HJTZHRBM4R6 · pith_short_8: OB3Z7HJT

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/OB3Z7HJTZHRBM4R6EEROC76GVK \
  | 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: 70779f9d33c9e216723e2122e17fc6aabd11a485df9c6623171bba7fe2f3fb8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82f67f85105c1082ad964b849c9c8c66484f4e99f4d26a6b875588c3cbf3e456",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-23T16:00:22Z",
    "title_canon_sha256": "f7551c29571da29e082b8a0b93533006b725498a8dc06328eb4edfee5c9e2267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3952",
    "kind": "arxiv",
    "version": 1
  }
}