Pith Number

pith:J2M4WVFF

pith:2014:J2M4WVFFYELMZKKJ63WRDAKM6K

not attested not anchored not stored refs pending

Spatial Coupling of Generator Matrix: A General Approach to Design of Good Codes at a Target BER

Baoming Bai, Chulong Liang, Qiutao Zhuang, Xiao Ma

arxiv:1405.2524 v1 · 2014-05-11 · 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{J2M4WVFFYELMZKKJ63WRDAKM6K}

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	2026-05-18T02:52:05.339345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e99cb54a5c116cca949f6ed11814cf2a1e1daa6a13c15d74eb25beda3ffdeff

Aliases

arxiv: 1405.2524 · arxiv_version: 1405.2524v1 · doi: 10.48550/arxiv.1405.2524 · pith_short_12: J2M4WVFFYELM · pith_short_16: J2M4WVFFYELMZKKJ · pith_short_8: J2M4WVFF

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/J2M4WVFFYELMZKKJ63WRDAKM6K \
  | 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: 4e99cb54a5c116cca949f6ed11814cf2a1e1daa6a13c15d74eb25beda3ffdeff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca87435bb367d81c248deb8d727d2ba74fea63f983ea23dbe053e5a9eaacdc71",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-05-11T11:47:52Z",
    "title_canon_sha256": "50d2b06d2bb0556503a238082560b494f48eb8a81bf9ee1d92d9ff472cff0fe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.2524",
    "kind": "arxiv",
    "version": 1
  }
}