Pith Number

pith:YH3ZQJ3K

pith:2013:YH3ZQJ3KP4E34F6BKRCGMHUWTX

not attested not anchored not stored refs pending

Rate-Compatible Short-Length Protograph LDPC Codes

Aria Nosratinia, Dariush Divsalar, Thuy Van Nguyen

arxiv:1302.5166 v1 · 2013-02-21 · 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{YH3ZQJ3KP4E34F6BKRCGMHUWTX}

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	2026-05-18T03:32:59.517784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1f798276a7f09be17c15444661e969de450a7642133aa0477e284f9e2ae4ceb

Aliases

arxiv: 1302.5166 · arxiv_version: 1302.5166v1 · doi: 10.48550/arxiv.1302.5166 · pith_short_12: YH3ZQJ3KP4E3 · pith_short_16: YH3ZQJ3KP4E34F6B · pith_short_8: YH3ZQJ3K

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/YH3ZQJ3KP4E34F6BKRCGMHUWTX \
  | 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: c1f798276a7f09be17c15444661e969de450a7642133aa0477e284f9e2ae4ceb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7a95c25381e5432b0b381507ee693f3a75b492271303e49d6ed9e6e258810be",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-02-21T03:08:33Z",
    "title_canon_sha256": "09ac23c061d9c4a8d938e47573895628e05c199130b755a640061151bbb3442b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5166",
    "kind": "arxiv",
    "version": 1
  }
}