Pith Number

pith:O64ZFIOS

pith:2012:O64ZFIOSUKLBLOYGVZLBLY4Y3K

not attested not anchored not stored refs pending

Construction of High-Rate Regular Quasi-Cyclic LDPC Codes Based on Cyclic Difference Families

Dong-Joon Shin, Hosung Park, Jong-Seon No, Seokbeom Hong

arxiv:1211.3828 v1 · 2012-11-16 · 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{O64ZFIOSUKLBLOYGVZLBLY4Y3K}

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	2026-05-18T00:57:56.703612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77b992a1d2a29615bb06ae5615e398da9e3dcecadab38545a899872d2df56488

Aliases

arxiv: 1211.3828 · arxiv_version: 1211.3828v1 · doi: 10.48550/arxiv.1211.3828 · pith_short_12: O64ZFIOSUKLB · pith_short_16: O64ZFIOSUKLBLOYG · pith_short_8: O64ZFIOS

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/O64ZFIOSUKLBLOYGVZLBLY4Y3K \
  | 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: 77b992a1d2a29615bb06ae5615e398da9e3dcecadab38545a899872d2df56488

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "261b9ac468ca53e654f6bbd66abc4f5cf9eee86e830372392e168a9c69044179",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-11-16T08:41:11Z",
    "title_canon_sha256": "5e8392bdb288e9448f67ace4a160d2a909bd98e79721df3b09b4cbfee9d73bd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3828",
    "kind": "arxiv",
    "version": 1
  }
}