Pith Number

pith:2YHS75W3

pith:2026:2YHS75W3N3BBTQXCMYJECORFFD

not attested not anchored not stored refs pending

Quantum LDPC codes with design rate 1/5 and good performance below 1000 physical qubits

Yifan Hong

arxiv:2607.27644 v1 · 2026-07-30 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2YHS75W3N3BBTQXCMYJECORFFD}

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	2026-07-31T01:29:08.581922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

d60f2ff6db6ec219c2e26612413a2528eff6ebf7fd2025fbb305ce17320d9389

Aliases

arxiv: 2607.27644 · arxiv_version: 2607.27644v1 · doi: 10.48550/arxiv.2607.27644 · pith_short_12: 2YHS75W3N3BB · pith_short_16: 2YHS75W3N3BBTQXC · pith_short_8: 2YHS75W3

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/2YHS75W3N3BBTQXCMYJECORFFD \
  | 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: d60f2ff6db6ec219c2e26612413a2528eff6ebf7fd2025fbb305ce17320d9389

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27099d420db8448ea7259f9ede82c1461f6746fea26f738081a54caa28cabd8e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-30T03:55:43Z",
    "title_canon_sha256": "ee3f208d7d712610df0f9ecd9d3305b0541bdcfaef60da1cde36acd595684771"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.27644",
    "kind": "arxiv",
    "version": 1
  }
}