Pith Number

pith:T4G4SZHG

pith:2010:T4G4SZHG6VCTKISPUFU7L4P46U

not attested not anchored not stored refs pending

A Simple n-Dimensional Intrinsically Universal Quantum Cellular Automaton

Jonathan Grattage, Pablo Arrighi

arxiv:1002.1015 v2 · 2010-02-04 · 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{T4G4SZHG6VCTKISPUFU7L4P46U}

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	2026-05-18T04:39:28.801866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f0dc964e6f54535224fa169f5f1fcf53986dc3093c0a1106d7b5a0a87ee26cd

Aliases

arxiv: 1002.1015 · arxiv_version: 1002.1015v2 · doi: 10.48550/arxiv.1002.1015 · pith_short_12: T4G4SZHG6VCT · pith_short_16: T4G4SZHG6VCTKISP · pith_short_8: T4G4SZHG

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/T4G4SZHG6VCTKISPUFU7L4P46U \
  | 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: 9f0dc964e6f54535224fa169f5f1fcf53986dc3093c0a1106d7b5a0a87ee26cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e889ddd13eb543ef48ab5ba5c51dcc111a4da51fa95ec10fb287265c72a93d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-02-04T15:11:31Z",
    "title_canon_sha256": "42955fa0ab3be2203ef035e514544c38bbaff7b97bcbf775a9014578786a109f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1015",
    "kind": "arxiv",
    "version": 2
  }
}