Pith Number

pith:BS7HJ3DT

pith:2010:BS7HJ3DTUOPXJGXC2KRYU36BHJ

not attested not anchored not stored refs pending

Deriving Good LDPC Convolutional Codes from LDPC Block Codes

Ali E. Pusane, Daniel J. Costello Jr, Pascal O. Vontobel, Roxana Smarandache

arxiv:1004.5157 v3 · 2010-04-28 · 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{BS7HJ3DTUOPXJGXC2KRYU36BHJ}

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	2026-05-18T02:24:15.227138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cbe74ec73a39f749ae2d2a38a6fc13a4290d2d9ef3bffe50c4026d22cea9727

Aliases

arxiv: 1004.5157 · arxiv_version: 1004.5157v3 · doi: 10.48550/arxiv.1004.5157 · pith_short_12: BS7HJ3DTUOPX · pith_short_16: BS7HJ3DTUOPXJGXC · pith_short_8: BS7HJ3DT

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/BS7HJ3DTUOPXJGXC2KRYU36BHJ \
  | 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: 0cbe74ec73a39f749ae2d2a38a6fc13a4290d2d9ef3bffe50c4026d22cea9727

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "677d24bfe4eb746ad010158097dac543932253abd69d6bc284b0bff4d7cb12ba",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-04-28T22:19:52Z",
    "title_canon_sha256": "82a96f375e3773fa4d3d8e3363ce444a6b5f97ce5375034dce589930d6dd1a06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.5157",
    "kind": "arxiv",
    "version": 3
  }
}