Pith Number

pith:VB6D4IUI

pith:2020:VB6D4IUI7EUIBXNAMGD7EW72OU

not attested not anchored not stored refs pending

Single trusted qubit is necessary and sufficient for quantum realisation of extremal no-signaling correlations

Micha{\l} Banacki, Pawe{\l} Horodecki, Ravishankar Ramanathan, Ricard Ravell Rodr\'iguez

arxiv:2004.14782 v2 · 2020-04-30 · 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{VB6D4IUI7EUIBXNAMGD7EW72OU}

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	2026-07-05T05:27:15.173508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a87c3e2288f92880dda06187f25bfa75249ce9d18f3519114f7ff67cccd0c611

Aliases

arxiv: 2004.14782 · arxiv_version: 2004.14782v2 · doi: 10.48550/arxiv.2004.14782 · pith_short_12: VB6D4IUI7EUI · pith_short_16: VB6D4IUI7EUIBXNA · pith_short_8: VB6D4IUI

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/VB6D4IUI7EUIBXNAMGD7EW72OU \
  | 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: a87c3e2288f92880dda06187f25bfa75249ce9d18f3519114f7ff67cccd0c611

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23e41b8678d3648ac6208164b454a2ede33beb9053422d3525481c35cc93cb3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-04-30T13:52:01Z",
    "title_canon_sha256": "4fe03e2c95f0f7f4c0d22be2c5e51ce9b07ebecd4c0bd4972d42dc4eedcb4a5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.14782",
    "kind": "arxiv",
    "version": 2
  }
}