Pith Number

pith:2KJVQXVQ

pith:2017:2KJVQXVQQ7ADRATONTTSC45UVB

not attested not anchored not stored refs pending

A method for constructing parity-check matrices of non-binary quasi-cyclic LDPC codes

Alexey Frolov, Stanislav Kruglik, Valeriya Potapova

arxiv:1705.10717 v1 · 2017-05-30 · 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{2KJVQXVQQ7ADRATONTTSC45UVB}

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	2026-05-18T00:43:23.702944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d293585eb087c038826e6ce72173b4a85b4b71039627721ceb49cb6e8d001df9

Aliases

arxiv: 1705.10717 · arxiv_version: 1705.10717v1 · doi: 10.48550/arxiv.1705.10717 · pith_short_12: 2KJVQXVQQ7AD · pith_short_16: 2KJVQXVQQ7ADRATO · pith_short_8: 2KJVQXVQ

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/2KJVQXVQQ7ADRATONTTSC45UVB \
  | 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: d293585eb087c038826e6ce72173b4a85b4b71039627721ceb49cb6e8d001df9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50ce4de50ad93f51f1badd147b4bddd49eac61b28ef8a87a6f254618b37f64f2",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-05-30T16:11:47Z",
    "title_canon_sha256": "abe24ea5c748cdc47b2b41c287c270a69b2daba5e4807036576bbba19792de92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10717",
    "kind": "arxiv",
    "version": 1
  }
}