Pith Number

pith:WOWAYPWP

pith:2019:WOWAYPWP53W4IE4BFXHLCAU4H5

not attested not anchored not stored refs pending

Compute-and-forward relaying with LDPC codes over QPSK scheme

\'Angeles Vazquez-Castro, Masahito Hayashi, Satoshi Takabe, Tadashi Wadayama

arxiv:1904.08306 v1 · 2019-04-17 · 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{WOWAYPWP53W4IE4BFXHLCAU4H5}

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	2026-05-17T23:48:18.069303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3ac0c3ecfeeedc413812dceb1029c3f71bc7a8cbb5a1ab51975da35507af320

Aliases

arxiv: 1904.08306 · arxiv_version: 1904.08306v1 · doi: 10.48550/arxiv.1904.08306 · pith_short_12: WOWAYPWP53W4 · pith_short_16: WOWAYPWP53W4IE4B · pith_short_8: WOWAYPWP

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/WOWAYPWP53W4IE4BFXHLCAU4H5 \
  | 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: b3ac0c3ecfeeedc413812dceb1029c3f71bc7a8cbb5a1ab51975da35507af320

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9af8eff2d2e3b5146321c0cc8ab9d6bb229f881c541a1a6b4aa491256975e4f8",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-17T15:05:33Z",
    "title_canon_sha256": "54ef5f24df226b0543bd2e8405bbbda67f13f274c47e86dffd1bfcfaa13348fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08306",
    "kind": "arxiv",
    "version": 1
  }
}