Pith Number

pith:VGGQLAQT

pith:2012:VGGQLAQTAAVBYYGXVVZJA4WCXQ

not attested not anchored not stored refs pending

A Robust Signal Classification Scheme for Cognitive Radio

Hanwen Cao, J\"urgen Peissig

arxiv:1207.5342 v1 · 2012-07-23 · cs.IT · cs.LG · cs.NI · 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{VGGQLAQTAAVBYYGXVVZJA4WCXQ}

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	2026-05-18T00:56:52.587882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a98d058213002a1c60d7ad729072c2bc18602775e7d458b045579121238a703d

Aliases

arxiv: 1207.5342 · arxiv_version: 1207.5342v1 · doi: 10.48550/arxiv.1207.5342 · pith_short_12: VGGQLAQTAAVB · pith_short_16: VGGQLAQTAAVBYYGX · pith_short_8: VGGQLAQT

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/VGGQLAQTAAVBYYGXVVZJA4WCXQ \
  | 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: a98d058213002a1c60d7ad729072c2bc18602775e7d458b045579121238a703d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6386606946ff316b8db1a771b3c09479dd5186cfee1909b90cc31c201a7b3b20",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NI",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-07-23T10:22:56Z",
    "title_canon_sha256": "3c78db782b4e381b9e1d327344c9c459134b908d7aa201d800e25546417059bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5342",
    "kind": "arxiv",
    "version": 1
  }
}