Pith Number

pith:FPHYWKXV

pith:2009:FPHYWKXVCVM544KBQWJ5ZLOYCG

not attested not anchored not stored refs pending

Quantum key distribution using vacuum-one-photon qubits: maximum number of transferable bits per particle

Hai-Woong Lee, Jae-Weon Lee, Janos A. Bergou, Se-Wan Ji, Su-Yong Lee

arxiv:0907.3393 v1 · 2009-07-20 · quant-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T02:12:55.591350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bcf8b2af51559de71418593dcadd81180ffe8ff9db1ce0507ccd29f5a0d60f2

Aliases

arxiv: 0907.3393 · arxiv_version: 0907.3393v1 · doi: 10.48550/arxiv.0907.3393 · pith_short_12: FPHYWKXVCVM5 · pith_short_16: FPHYWKXVCVM544KB · pith_short_8: FPHYWKXV

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/FPHYWKXVCVM544KBQWJ5ZLOYCG \
  | 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: 2bcf8b2af51559de71418593dcadd81180ffe8ff9db1ce0507ccd29f5a0d60f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06d33024e0998561ea1504fc792663d1663b95fa3045235d8b00b356ee9ccd5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-07-20T13:20:55Z",
    "title_canon_sha256": "44e8796e1c3248c74516332843b9491585e3949acfed0a7f763a8f5033211351"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3393",
    "kind": "arxiv",
    "version": 1
  }
}