Pith Number

pith:CP5SOWFC

pith:2013:CP5SOWFCMG3E3IB5QYCBW7WHDY

not attested not anchored not stored refs pending

Simple Hardy-like proof of quantum contextuality

Adan Cabello, Marcelo Terra Cunha, Mohamed Bourennane, Piotr Badziag

arxiv:1310.8330 v1 · 2013-10-30 · 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{CP5SOWFCMG3E3IB5QYCBW7WHDY}

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	2026-05-18T03:08:24.309325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13fb2758a261b64da03d86041b7ec71e2ce80f63eb2e1eea86a6cb06aa470e9f

Aliases

arxiv: 1310.8330 · arxiv_version: 1310.8330v1 · doi: 10.48550/arxiv.1310.8330 · pith_short_12: CP5SOWFCMG3E · pith_short_16: CP5SOWFCMG3E3IB5 · pith_short_8: CP5SOWFC

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/CP5SOWFCMG3E3IB5QYCBW7WHDY \
  | 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: 13fb2758a261b64da03d86041b7ec71e2ce80f63eb2e1eea86a6cb06aa470e9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2260dccfe9bd8df1af397469441c18abed64a21a488447254c1a4db53e60df60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-10-30T21:26:42Z",
    "title_canon_sha256": "8d2c582b4e04ef6d8c908594a23e8d70341bb0f58e00258094f514fb09592d6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.8330",
    "kind": "arxiv",
    "version": 1
  }
}