Pith Number

pith:VPO7QFTR

pith:2025:VPO7QFTRBNIEUDBUMOCSKM4KRI

not attested not anchored not stored refs pending

High-Rate Spatially Coupled LDPC Codes Based on Massey's Convolutional Self-Orthogonal Codes

Daniel J. Costello, David G. M. Mitchell, Jr., Michael Lentmaier, Min Zhu

arxiv:2502.03774 v2 · 2025-02-06 · 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{VPO7QFTRBNIEUDBUMOCSKM4KRI}

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	2026-07-05T10:15:25.598369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abddf816710b504a0c34638525338a8a1e9c12b4a6cb51e49a97046a28b2626b

Aliases

arxiv: 2502.03774 · arxiv_version: 2502.03774v2 · doi: 10.48550/arxiv.2502.03774 · pith_short_12: VPO7QFTRBNIE · pith_short_16: VPO7QFTRBNIEUDBU · pith_short_8: VPO7QFTR

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/VPO7QFTRBNIEUDBUMOCSKM4KRI \
  | 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: abddf816710b504a0c34638525338a8a1e9c12b4a6cb51e49a97046a28b2626b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ddf225f08899870731b799bd632bcb1765390145ba3304e6f150ecdef64b246",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2025-02-06T04:25:16Z",
    "title_canon_sha256": "ff4f8db7c0496ca76d4bbe78c8e6118c6943b4a8d06cbab4be4f5199b8df7020"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.03774",
    "kind": "arxiv",
    "version": 2
  }
}