Pith Number

pith:45Y4D46M

pith:2026:45Y4D46MFKB626GI4WUQK5KAOA

not attested not anchored not stored refs pending

Robust self-test of the maximally entangled state of two-qubits without assuming unitary observables

Alexandre C. Orthey Jr., Magdalena Stobi\'nska-Moretto

arxiv:2607.04035 v1 · 2026-07-04 · 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{45Y4D46MFKB626GI4WUQK5KAOA}

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	2026-07-07T02:18:54.359492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e771c1f3cc2a83ed78c8e5a9057540700089ca12f0373814c7f917892dc70f79

Aliases

arxiv: 2607.04035 · arxiv_version: 2607.04035v1 · doi: 10.48550/arxiv.2607.04035 · pith_short_12: 45Y4D46MFKB6 · pith_short_16: 45Y4D46MFKB626GI · pith_short_8: 45Y4D46M

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/45Y4D46MFKB626GI4WUQK5KAOA \
  | 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: e771c1f3cc2a83ed78c8e5a9057540700089ca12f0373814c7f917892dc70f79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f86f2d35f2fc1e364d6794f607d513d845fb8a42c9f7d220b7b8e32d899f0c19",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-04T21:31:49Z",
    "title_canon_sha256": "db9f02cc78ad4102c3e3ea2ae3942d994d4385c416cacd2450dacc61e36d93e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.04035",
    "kind": "arxiv",
    "version": 1
  }
}