Pith Number

pith:NWWR4SAC

pith:2009:NWWR4SAC7NOHXN47MEQNQTALTQ

not attested not anchored not stored refs pending

Quantifying the Availability of TV White Spaces for Cognitive Radio Operation in the UK

Maziar Nekovee

arxiv:0906.3394 v1 · 2009-06-18 · cs.NI · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NWWR4SAC7NOHXN47MEQNQTALTQ}

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	2026-05-18T00:58:20.107200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dad1e4802fb5c7bb79f6120d84c0b9c322dc39aeb49ee4217ac7e0e09f378c7

Aliases

arxiv: 0906.3394 · arxiv_version: 0906.3394v1 · doi: 10.48550/arxiv.0906.3394 · pith_short_12: NWWR4SAC7NOH · pith_short_16: NWWR4SAC7NOHXN47 · pith_short_8: NWWR4SAC

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/NWWR4SAC7NOHXN47MEQNQTALTQ \
  | 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: 6dad1e4802fb5c7bb79f6120d84c0b9c322dc39aeb49ee4217ac7e0e09f378c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d825a6cc7e4c490133e4cfb077c89ac9b6c4e6df2b3ac8687cbb3ca2e5ee672",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2009-06-18T09:54:20Z",
    "title_canon_sha256": "c6df79fd79e19d47255426954431090a8f89b5797d67e674e4c3930a8661b979"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3394",
    "kind": "arxiv",
    "version": 1
  }
}