Pith Number

pith:XAQA442G

pith:2011:XAQA442GXTFCBS3ZEUMWIQKPOS

not attested not anchored not stored refs pending

Spectrum Sensing Based on Blindly Learned Signal Feature

Peng Zhang, Robert Qiu

arxiv:1102.2840 v2 · 2011-02-14 · 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{XAQA442GXTFCBS3ZEUMWIQKPOS}

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	2026-05-18T04:24:36.071656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8200e7346bcca20cb79251964414f74af1119979575254150bbb1e69be7069c

Aliases

arxiv: 1102.2840 · arxiv_version: 1102.2840v2 · doi: 10.48550/arxiv.1102.2840 · pith_short_12: XAQA442GXTFC · pith_short_16: XAQA442GXTFCBS3Z · pith_short_8: XAQA442G

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/XAQA442GXTFCBS3ZEUMWIQKPOS \
  | 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: b8200e7346bcca20cb79251964414f74af1119979575254150bbb1e69be7069c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea731ce2fbae5e0a13fad0e7b8b1969854ae4cea86c98d5f5b1a820c15149d99",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-02-14T17:58:24Z",
    "title_canon_sha256": "712ab29cbe813975665d4df9e58c5d43737390dd48937d3282c6000b4f394c8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2840",
    "kind": "arxiv",
    "version": 2
  }
}