Pith Number

pith:GFCVO64N

pith:2008:GFCVO64NT4HV3LBOMF4ARH5H52

not attested not anchored not stored refs pending

Evidence for Merger-Driven Activity in the Clustering of High Redshift Quasars

Abraham Loeb, Stuart Wyithe

arxiv:0810.3455 v1 · 2008-10-20 · 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{GFCVO64NT4HV3LBOMF4ARH5H52}

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	2026-05-18T02:15:23.972504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3145577b8d9f0f5dac2e6178089fa7ee8c6a6217ec7ca6322a78961a579f623d

Aliases

arxiv: 0810.3455 · arxiv_version: 0810.3455v1 · doi: 10.48550/arxiv.0810.3455 · pith_short_12: GFCVO64NT4HV · pith_short_16: GFCVO64NT4HV3LBO · pith_short_8: GFCVO64N

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/GFCVO64NT4HV3LBOMF4ARH5H52 \
  | 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: 3145577b8d9f0f5dac2e6178089fa7ee8c6a6217ec7ca6322a78961a579f623d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7600bc828b131a715f47c2980667889e77559f7613aa232efdf80894a95df116",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-20T02:42:17Z",
    "title_canon_sha256": "ddce7c685322a770944909d553049bd6d8dae3a792fa0d8310b062bd010fd8a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3455",
    "kind": "arxiv",
    "version": 1
  }
}