Pith Number

pith:W4XRBWC6

pith:2004:W4XRBWC64SOZTYDISR7KVEHCUH

not attested not anchored not stored refs pending

Quantum channel based on correlated twin laser beams

Constantin V. Usenko, Vladyslav C. Usenko

arxiv:quant-ph/0407175 v1 · 2004-07-22 · 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{W4XRBWC64SOZTYDISR7KVEHCUH}

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	2026-05-18T01:37:58.476349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b72f10d85ee49d99e068947eaa90e2a1fe72630c46ed39f01fdda4e29188d59c

Aliases

arxiv: quant-ph/0407175 · arxiv_version: quant-ph/0407175v1 · doi: 10.48550/arxiv.quant-ph/0407175 · pith_short_12: W4XRBWC64SOZ · pith_short_16: W4XRBWC64SOZTYDI · pith_short_8: W4XRBWC6

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/W4XRBWC64SOZTYDISR7KVEHCUH \
  | 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: b72f10d85ee49d99e068947eaa90e2a1fe72630c46ed39f01fdda4e29188d59c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2289edf8c7c0891306559ae92881b18ee86186cc2d54fe3bddaf39a6f041f00",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-07-22T09:10:09Z",
    "title_canon_sha256": "b4a1481e31551a16b188b627b70bc7e81a61e5b93b1b2106fd76b4c92b517a95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0407175",
    "kind": "arxiv",
    "version": 1
  }
}