Pith Number

pith:KBYTRBGS

pith:2009:KBYTRBGS2HPVLOPZY5QJUDFB7V

not attested not anchored not stored refs pending

Formation of High-redshift (z>6) Quasars Driven by Nuclear Starbursts

Keiichi Wada, Nozomu Kawakatu

arxiv:0910.1379 v1 · 2009-10-07 · 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{KBYTRBGS2HPVLOPZY5QJUDFB7V}

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	2026-05-18T02:34:19.723353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50713884d2d1df55b9f9c7609a0ca1fd446d656ccf11fead2dd725a50178d480

Aliases

arxiv: 0910.1379 · arxiv_version: 0910.1379v1 · doi: 10.48550/arxiv.0910.1379 · pith_short_12: KBYTRBGS2HPV · pith_short_16: KBYTRBGS2HPVLOPZ · pith_short_8: KBYTRBGS

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/KBYTRBGS2HPVLOPZY5QJUDFB7V \
  | 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: 50713884d2d1df55b9f9c7609a0ca1fd446d656ccf11fead2dd725a50178d480

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5581d9b364795deab7a03bc96963bf2d59ae32ba921a00cc6ef911ae2cce7b15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-07T23:43:11Z",
    "title_canon_sha256": "599cde21dd0040aa506e679ad948f3de716a4542302e726b8fe0dc8a6046c5b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1379",
    "kind": "arxiv",
    "version": 1
  }
}