Pith Number

pith:VXY3CBQ3

pith:2012:VXY3CBQ3WSLNIBECR5RMR4NCKN

not attested not anchored not stored refs pending

Low-overhead surface code logical Hadamard

Austin G. Fowler

arxiv:1202.2639 v2 · 2012-02-13 · 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{VXY3CBQ3WSLNIBECR5RMR4NCKN}

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	2026-05-18T03:46:03.438019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adf1b1061bb496d404828f62c8f1a2535ff3864a949a8c1833ae4020bc77c914

Aliases

arxiv: 1202.2639 · arxiv_version: 1202.2639v2 · doi: 10.48550/arxiv.1202.2639 · pith_short_12: VXY3CBQ3WSLN · pith_short_16: VXY3CBQ3WSLNIBEC · pith_short_8: VXY3CBQ3

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/VXY3CBQ3WSLNIBECR5RMR4NCKN \
  | 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: adf1b1061bb496d404828f62c8f1a2535ff3864a949a8c1833ae4020bc77c914

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4afd7dd04a5c30096c9cd28995ef791d90819c6f05f5dcd5729713cd3e34576e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-02-13T06:39:14Z",
    "title_canon_sha256": "9173bd1b1c41bbdfe0686838a373221d9102737e0757fed0b9d7a914dc2ae75b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2639",
    "kind": "arxiv",
    "version": 2
  }
}