Pith Number

pith:SBIQ3SF4

pith:2026:SBIQ3SF4NZVFHFT42GPKEEFZGY

not attested not anchored not stored refs pending

Approximating optimal decoding of quantum LDPC codes with narrow frontiers

Anthony Leverrier, R\"udiger Urbanke

arxiv:2606.20513 v1 · 2026-06-18 · quant-ph · 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{SBIQ3SF4NZVFHFT42GPKEEFZGY}

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	2026-06-19T16:13:14.125309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90510dc8bc6e6a53967cd19ea210b936199ae3ba24820285af4993012ede836d

Aliases

arxiv: 2606.20513 · arxiv_version: 2606.20513v1 · doi: 10.48550/arxiv.2606.20513 · pith_short_12: SBIQ3SF4NZVF · pith_short_16: SBIQ3SF4NZVFHFT4 · pith_short_8: SBIQ3SF4

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/SBIQ3SF4NZVFHFT42GPKEEFZGY \
  | 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: 90510dc8bc6e6a53967cd19ea210b936199ae3ba24820285af4993012ede836d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec76a4d4cf5869877f23b52f2e813bcb60adab06bbad57a96a2e0e20b3f945f5",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-06-18T17:34:11Z",
    "title_canon_sha256": "f3431d89fc89a9f1a04e92c2f9b9bf0112e8a2779aeea7f19f27c16b9c5d354f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20513",
    "kind": "arxiv",
    "version": 1
  }
}