Pith Number

pith:MRGX4KRU

pith:2026:MRGX4KRUHORAXOUIHMCH3EQYAY

not attested not anchored not stored refs pending

On the Intractability of the Minimum Distance Problem for Regular LDPC Codes

Chenyuan Jia, Guanghui Wang, Guiying Yan, Ke Liu, Qingqing Peng

arxiv:2606.23161 v1 · 2026-06-22 · cs.CC · 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{MRGX4KRUHORAXOUIHMCH3EQYAY}

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	2026-06-23T03:14:11.719477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

644d7e2a343ba20bba883b047d9218060ce4ffc50e52315fceb60b7cd6e2b148

Aliases

arxiv: 2606.23161 · arxiv_version: 2606.23161v1 · doi: 10.48550/arxiv.2606.23161 · pith_short_12: MRGX4KRUHORA · pith_short_16: MRGX4KRUHORAXOUI · pith_short_8: MRGX4KRU

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/MRGX4KRUHORAXOUIHMCH3EQYAY \
  | 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: 644d7e2a343ba20bba883b047d9218060ce4ffc50e52315fceb60b7cd6e2b148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f29fdb658867164a5815854cd8da135fab59101fdb590d8c833f3a5d9d7cfdb1",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2026-06-22T11:03:21Z",
    "title_canon_sha256": "6610da3163a309dbe8dae8992930970a699a67a2b8eab1a790e86e44361d8a52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.23161",
    "kind": "arxiv",
    "version": 1
  }
}