Pith Number

pith:OODF4Q54

pith:2009:OODF4Q54CNQG2XHAIKGRVNO47M

not attested not anchored not stored refs pending

A Survey of z~6 Quasars in the SDSS Deep Stripe. II. Discovery of Six Quasars at z_{AB}>21

Donald P. Schneider, Elena Malanushenko, Fuyan Bian, Gordon T. Richards, Huan Lin, James Annis, Kuenley Chiu, Linhua Jiang, Michael A. Strauss, Robert H. Lupton, Sebastian Jester, Viktor Malanushenko, Xiaohui Fan

arxiv:0905.4126 v1 · 2009-05-26 · 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{OODF4Q54CNQG2XHAIKGRVNO47M}

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	2026-05-18T02:13:37.602477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73865e43bc13606d5ce0428d1ab5dcfb240992568d189ea4ce0789aa2b972149

Aliases

arxiv: 0905.4126 · arxiv_version: 0905.4126v1 · doi: 10.48550/arxiv.0905.4126 · pith_short_12: OODF4Q54CNQG · pith_short_16: OODF4Q54CNQG2XHA · pith_short_8: OODF4Q54

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/OODF4Q54CNQG2XHAIKGRVNO47M \
  | 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: 73865e43bc13606d5ce0428d1ab5dcfb240992568d189ea4ce0789aa2b972149

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f371dab023b7e5bef24ead8d6455f581ae6433071c38588f94d6128e14d5cbb9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-26T07:05:46Z",
    "title_canon_sha256": "ad8fb5647a367baec16172e5cd8e4643ae2bb572770adbc2196dcc7262972b3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4126",
    "kind": "arxiv",
    "version": 1
  }
}