Pith Number

pith:W4Y3YJ5W

pith:2012:W4Y3YJ5WBSUYUNOILDJSKZKIJQ

not attested not anchored not stored refs pending

Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio

Ahmed El Shafie, Ahmed Sultan

arxiv:1208.5659 v1 · 2012-08-28 · cs.NI · 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{W4Y3YJ5WBSUYUNOILDJSKZKIJQ}

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	2026-05-18T03:46:58.119849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b731bc27b60ca98a35c858d32565484c291ebc15bab6a19dd2ddf0309ccc5f71

Aliases

arxiv: 1208.5659 · arxiv_version: 1208.5659v1 · doi: 10.48550/arxiv.1208.5659 · pith_short_12: W4Y3YJ5WBSUY · pith_short_16: W4Y3YJ5WBSUYUNOI · pith_short_8: W4Y3YJ5W

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/W4Y3YJ5WBSUYUNOILDJSKZKIJQ \
  | 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: b731bc27b60ca98a35c858d32565484c291ebc15bab6a19dd2ddf0309ccc5f71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1a6e41a75035934da5a95abe58b8e14d35ffbe534a51f62cb12b365a645fb26",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2012-08-28T13:30:03Z",
    "title_canon_sha256": "e3ea954de0fffeab05d3b7366807db565aa0406304c3d90bde3e4942e86fe90c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5659",
    "kind": "arxiv",
    "version": 1
  }
}