Pith Number

pith:WMQNA7CI

pith:2012:WMQNA7CIJ5L5BCMJJ5NUQVRHRJ

not attested not anchored not stored refs pending

Practically state-independent test of contextuality with 9 observables

Dagomir Kaszlikowski, Pawel Kurzynski

arxiv:1207.1212 v1 · 2012-07-05 · 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{WMQNA7CIJ5L5BCMJJ5NUQVRHRJ}

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	2026-05-18T03:23:03.882094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b320d07c484f57d089894f5b4856278a64ee2634ac45d7e018e1ba88fef25d29

Aliases

arxiv: 1207.1212 · arxiv_version: 1207.1212v1 · doi: 10.48550/arxiv.1207.1212 · pith_short_12: WMQNA7CIJ5L5 · pith_short_16: WMQNA7CIJ5L5BCMJ · pith_short_8: WMQNA7CI

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/WMQNA7CIJ5L5BCMJJ5NUQVRHRJ \
  | 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: b320d07c484f57d089894f5b4856278a64ee2634ac45d7e018e1ba88fef25d29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e0a4395255769d8a0de23aa027fd93a2a696f014f3c11ed2abb25b532c696c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-07-05T10:28:00Z",
    "title_canon_sha256": "fabbfbcb0b6b631bec243703df268323e155e87a32caab00c19cf0a2524d23e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1212",
    "kind": "arxiv",
    "version": 1
  }
}