Pith Number

pith:T357SZ7O

pith:2013:T357SZ7O56PCODCX34KMQHQ6NX

not attested not anchored not stored refs pending

A Study on Spectral Efficiency of Physical Layer over Cognitive Radio

Fotis Foukalas, Lazaros Merakos

arxiv:1302.2577 v1 · 2013-02-11 · cs.ET · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T357SZ7O56PCODCX34KMQHQ6NX}

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	2026-05-18T03:34:00.738074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9efbf967eeef9e270c57df14c81e1e6dc814ec68b79229f271496422cd0d54c7

Aliases

arxiv: 1302.2577 · arxiv_version: 1302.2577v1 · doi: 10.48550/arxiv.1302.2577 · pith_short_12: T357SZ7O56PC · pith_short_16: T357SZ7O56PCODCX · pith_short_8: T357SZ7O

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/T357SZ7O56PCODCX34KMQHQ6NX \
  | 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: 9efbf967eeef9e270c57df14c81e1e6dc814ec68b79229f271496422cd0d54c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "579247e8f14ffeb3396de01c01504eea8bab4f0eef42a92c4bbb0047a3f8ee85",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.ET",
    "submitted_at": "2013-02-11T19:26:17Z",
    "title_canon_sha256": "e25957a95d7b542eb32d5bc69c7ecc46a7323df2c2de5072009f37e101d3d268"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2577",
    "kind": "arxiv",
    "version": 1
  }
}