Pith Number

pith:BUZ4VVII

pith:2004:BUZ4VVIIXZ5KOPRI4O365ANPDR

not attested not anchored not stored refs pending

Applications of LDPC Codes to the Wiretap Channel

Andrew Thangaraj, A. R. Calderbank, Jean-Marc Merolla, Souvik Dihidar, Steven McLaughlin

arxiv:cs/0411003 v3 · 2004-11-02 · cs.IT · cs.CR · 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{BUZ4VVIIXZ5KOPRI4O365ANPDR}

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	2026-07-04T15:02:44.729251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d33cad508be7aa73e28e3b7ee81af1c7324ab0f14e40ff1fbdbf003417da71d

Aliases

arxiv: cs/0411003 · arxiv_version: cs/0411003v3 · doi: 10.48550/arxiv.cs/0411003 · pith_short_12: BUZ4VVIIXZ5K · pith_short_16: BUZ4VVIIXZ5KOPRI · pith_short_8: BUZ4VVII

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/BUZ4VVIIXZ5KOPRI4O365ANPDR \
  | 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: 0d33cad508be7aa73e28e3b7ee81af1c7324ab0f14e40ff1fbdbf003417da71d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c09894c777f56e757b983454c5f73eed32051761e8ca6a5a2f63b0fb55c7e6d5",
    "cross_cats_sorted": [
      "cs.CR",
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2004-11-02T10:21:59Z",
    "title_canon_sha256": "89c8048fbf9b42046fa175a5c0855142e0f956d0e2d4ef5f2dc386e85d418772"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0411003",
    "kind": "arxiv",
    "version": 3
  }
}