Pith Number

pith:WHKF5TYU

pith:2009:WHKF5TYUOFJM6EUI6JZ43ERHES

not attested not anchored not stored refs pending

Time Delay Estimation in Cognitive Radio Systems

Fatih Kocak, Hasari Celebi, Huseyin Arslan, H. Vincent Poor, Khalid A. Qaraqe, Sinan Gezici

arxiv:0910.4667 v1 · 2009-10-24 · 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{WHKF5TYUOFJM6EUI6JZ43ERHES}

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	2026-05-18T01:20:47.737973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1d45ecf147152cf1288f273cd922724a54d54b25f51c8ebc3865e91e0e23595

Aliases

arxiv: 0910.4667 · arxiv_version: 0910.4667v1 · doi: 10.48550/arxiv.0910.4667 · pith_short_12: WHKF5TYUOFJM · pith_short_16: WHKF5TYUOFJM6EUI · pith_short_8: WHKF5TYU

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/WHKF5TYUOFJM6EUI6JZ43ERHES \
  | 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: b1d45ecf147152cf1288f273cd922724a54d54b25f51c8ebc3865e91e0e23595

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d706d0e961a67fe3a76b26835d26e4bfd2bf3aaf9ca45cfa132ed81ccb83f35",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-10-24T17:27:04Z",
    "title_canon_sha256": "80b8aeffc7599c124956b9c07f633203bffb4367e6a90653d8e007080869fb2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4667",
    "kind": "arxiv",
    "version": 1
  }
}