Pith Number

pith:U5K5JHCC

pith:2013:U5K5JHCCADDG6G6OUKNJ7GFJZV

not attested not anchored not stored refs pending

Block Markov Superposition Transmission: Construction of Big Convolutional Codes from Short Codes

Chulong Liang, Kechao Huang, Qiutao Zhuang, Xiao Ma

arxiv:1308.4809 v1 · 2013-08-22 · 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{U5K5JHCCADDG6G6OUKNJ7GFJZV}

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	2026-05-18T03:15:19.708684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a755d49c4200c66f1bcea29a9f98a9cd575dbb98e04eb209a453c77851cb60a6

Aliases

arxiv: 1308.4809 · arxiv_version: 1308.4809v1 · doi: 10.48550/arxiv.1308.4809 · pith_short_12: U5K5JHCCADDG · pith_short_16: U5K5JHCCADDG6G6O · pith_short_8: U5K5JHCC

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/U5K5JHCCADDG6G6OUKNJ7GFJZV \
  | 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: a755d49c4200c66f1bcea29a9f98a9cd575dbb98e04eb209a453c77851cb60a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5df0aca1479bf9179e404bac52acdf31913ea27a6deb1e54d31698d7a38d76f6",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-08-22T09:46:36Z",
    "title_canon_sha256": "dcc4c929e881c15cdf4d55697d107ad4a3fd88480f0d1853bfe0789e60586a64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4809",
    "kind": "arxiv",
    "version": 1
  }
}