Pith Number

pith:M6PXPVAY

pith:2021:M6PXPVAYMZN6JMMDEPFO57A3MO

not attested not anchored not stored refs pending

Classically-Verifiable Quantum Advantage from a Computational Bell Test

Gregory D. Kahanamoku-Meyer, Norman Y. Yao, Soonwon Choi, Umesh V. Vazirani

arxiv:2104.00687 v2 · 2021-04-01 · quant-ph · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M6PXPVAYMZN6JMMDEPFO57A3MO}

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	2026-07-05T04:49:10.469613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

679f77d418665be4b18323caeefc1b63b8e509961f5ef15462d1a33254a77a1b

Aliases

arxiv: 2104.00687 · arxiv_version: 2104.00687v2 · doi: 10.48550/arxiv.2104.00687 · pith_short_12: M6PXPVAYMZN6 · pith_short_16: M6PXPVAYMZN6JMMD · pith_short_8: M6PXPVAY

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/M6PXPVAYMZN6JMMDEPFO57A3MO \
  | 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: 679f77d418665be4b18323caeefc1b63b8e509961f5ef15462d1a33254a77a1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17b900c6435be0ba2c95855531300c7a455ec9e809e3728b79725c65a93f66f7",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-04-01T18:00:00Z",
    "title_canon_sha256": "0af688c9a4cd4154a81242f0e5a32991933ac8598d47405f7736b40bfb6e7281"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.00687",
    "kind": "arxiv",
    "version": 2
  }
}