Pith Number

pith:O527SMZR

pith:2012:O527SMZR5JMGVDL5Q4RXTKASCD

not attested not anchored not stored refs pending

A New Ensemble of Rate-Compatible LDPC Codes

Baoming Bai, Kai Zhang, Shancheng Zhao, Xiao Ma, Xiaoyi Zhang

arxiv:1205.4070 v1 · 2012-05-18 · 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{O527SMZR5JMGVDL5Q4RXTKASCD}

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	2026-05-18T03:55:22.793664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7775f93331ea586a8d7d872379a81210f5d8f8964bab464dc3204b47491ef2a2

Aliases

arxiv: 1205.4070 · arxiv_version: 1205.4070v1 · doi: 10.48550/arxiv.1205.4070 · pith_short_12: O527SMZR5JMG · pith_short_16: O527SMZR5JMGVDL5 · pith_short_8: O527SMZR

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/O527SMZR5JMGVDL5Q4RXTKASCD \
  | 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: 7775f93331ea586a8d7d872379a81210f5d8f8964bab464dc3204b47491ef2a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "828d0259d6edbb408517b259dd9eea7c3fe9fd886da8b96051ce81b299e3ead0",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-05-18T02:32:03Z",
    "title_canon_sha256": "285a178a66687242a9a7996b7861c1667ff56988ee93424e4ce12e196655a51a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4070",
    "kind": "arxiv",
    "version": 1
  }
}