Pith Number

pith:FKQZL7BB

pith:2017:FKQZL7BBECHUEFVB4Y4JOJVIRQ

not attested not anchored not stored refs pending

Protograph LDPC Codes with Block Thresholds: Extension to Degree-1 and Generalized Nodes

Andrew Thangaraj, Asit Kumar Pradhan

arxiv:1710.09651 v2 · 2017-10-26 · 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{FKQZL7BBECHUEFVB4Y4JOJVIRQ}

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	2026-05-18T00:17:01.631621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2aa195fc21208f4216a1e6389726a88c1a012b7dfab1bcb754993ec382828eab

Aliases

arxiv: 1710.09651 · arxiv_version: 1710.09651v2 · doi: 10.48550/arxiv.1710.09651 · pith_short_12: FKQZL7BBECHU · pith_short_16: FKQZL7BBECHUEFVB · pith_short_8: FKQZL7BB

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/FKQZL7BBECHUEFVB4Y4JOJVIRQ \
  | 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: 2aa195fc21208f4216a1e6389726a88c1a012b7dfab1bcb754993ec382828eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eed10b1337fd8ec751bdd738a1e1ba044379c60cb7f5271866a8f18742e883eb",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-10-26T11:47:16Z",
    "title_canon_sha256": "194c4aa16eb2ef5a9e758814c4e3acbff37c5e9858692fbb26205178868eae6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09651",
    "kind": "arxiv",
    "version": 2
  }
}