Pith Number

pith:7SQFNBE3

pith:2026:7SQFNBE3KTUFBWL7H7DLYVZLT5

not attested not anchored not stored refs pending

Vine Codes: Low-Overhead Quantum LDPC Codes on a Planar Square Grid

Campbell K. McLauchlan, Charles C. L. van Rest, Georgia M. Nixon

arxiv:2606.20263 v1 · 2026-06-18 · quant-ph · cond-mat.str-el

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7SQFNBE3KTUFBWL7H7DLYVZLT5}

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	2026-06-19T16:13:07.216347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fca056849b54e850d97f3fc6bc572b9f6a1a87109c8638461c4bbd2e38382956

Aliases

arxiv: 2606.20263 · arxiv_version: 2606.20263v1 · doi: 10.48550/arxiv.2606.20263 · pith_short_12: 7SQFNBE3KTUF · pith_short_16: 7SQFNBE3KTUFBWL7 · pith_short_8: 7SQFNBE3

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/7SQFNBE3KTUFBWL7H7DLYVZLT5 \
  | 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: fca056849b54e850d97f3fc6bc572b9f6a1a87109c8638461c4bbd2e38382956

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d1e0fc47e097ed6fa746940024d3e969057b50680a500b1dfe7b3ed281fa6c9",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-06-18T14:11:14Z",
    "title_canon_sha256": "27d7be54ba42e853ab47491cec524f8647acb9db5972c2c1506cd546462d1028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20263",
    "kind": "arxiv",
    "version": 1
  }
}