Pith Number

pith:RWKSGH5J

pith:2018:RWKSGH5JCDVM5OFWC66D6X5XGF

not attested not anchored not stored refs pending

Design of Irregular SC-LDPC Codes With Non-Uniform Degree Distributions by Linear Programing

Heeyoul Kwak, Hosung Park, Jong-Seon No

arxiv:1802.07598 v2 · 2018-02-21 · 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{RWKSGH5JCDVM5OFWC66D6X5XGF}

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	2026-05-18T00:20:02.028197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d95231fa910eaceb8b617bc3f5fb73155522ae445cb7d75ab8d446517bfe275

Aliases

arxiv: 1802.07598 · arxiv_version: 1802.07598v2 · doi: 10.48550/arxiv.1802.07598 · pith_short_12: RWKSGH5JCDVM · pith_short_16: RWKSGH5JCDVM5OFW · pith_short_8: RWKSGH5J

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/RWKSGH5JCDVM5OFWC66D6X5XGF \
  | 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: 8d95231fa910eaceb8b617bc3f5fb73155522ae445cb7d75ab8d446517bfe275

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1343a68530e56f3526a47e5ed6d9a2aada5c65b659686d5ebecaf677e699eb1e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-02-21T14:56:03Z",
    "title_canon_sha256": "56262a2ebb715fd09a30529fca96436c064e2b4ccd9fff66f834623e23592457"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07598",
    "kind": "arxiv",
    "version": 2
  }
}