Pith Number

pith:4US63YWZ

pith:2008:4US63YWZYNMH25HUTPH22LA2K2

not attested not anchored not stored refs pending

Spectrum Sensing Algorithms for Cognitive Radio Based on Statistical Covariances

Ying-Chang Liang, Yonghong Zeng

arxiv:0808.2562 v1 · 2008-08-19 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4US63YWZYNMH25HUTPH22LA2K2}

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	2026-05-18T01:05:13.486231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e525ede2d9c3587d74f49bcfad2c1a569807d803ad322192ea569b5a4cfedbe8

Aliases

arxiv: 0808.2562 · arxiv_version: 0808.2562v1 · doi: 10.48550/arxiv.0808.2562 · pith_short_12: 4US63YWZYNMH · pith_short_16: 4US63YWZYNMH25HU · pith_short_8: 4US63YWZ

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/4US63YWZYNMH25HUTPH22LA2K2 \
  | 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: e525ede2d9c3587d74f49bcfad2c1a569807d803ad322192ea569b5a4cfedbe8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e1b20196806ad6e0999eb54a4f240c8f2633a1dfe7922fd865d452a3e810df7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-08-19T09:46:41Z",
    "title_canon_sha256": "4d950ecd4bd62b23fc6b3629ec167304422e34bf06fd17ef34ba0535beff0e02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.2562",
    "kind": "arxiv",
    "version": 1
  }
}