Pith Number

pith:ZZUREG4N

pith:2026:ZZUREG4NEXL72QZX4L355FXQSW

not attested not anchored not stored refs pending

A Denser Planar Surface Code

Alec F. White, Dominic W. Berry, Guang Hao Low, Nicholas C. Rubin, Ryan Babbush, Tanuj Khattar, William J. Huggins

arxiv:2605.30455 v1 · 2026-05-28 · 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{ZZUREG4NEXL72QZX4L355FXQSW}

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	2026-06-01T01:02:55.260153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce69121b8d25d7fd4337e2f7de96f095aef17d7a38e676d4b48e856ade0be686

Aliases

arxiv: 2605.30455 · arxiv_version: 2605.30455v1 · doi: 10.48550/arxiv.2605.30455 · pith_short_12: ZZUREG4NEXL7 · pith_short_16: ZZUREG4NEXL72QZX · pith_short_8: ZZUREG4N

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/ZZUREG4NEXL72QZX4L355FXQSW \
  | 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: ce69121b8d25d7fd4337e2f7de96f095aef17d7a38e676d4b48e856ade0be686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0756f11fbfd287c72a5b7185f2eead7099e0784a82f8f45e68cdd9ab5d3a5e6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-28T18:27:34Z",
    "title_canon_sha256": "605ba1392d82a6b8218628a592d29b83dfb9b00cf69ec8e2911c9341b9e39930"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.30455",
    "kind": "arxiv",
    "version": 1
  }
}