Pith Number

pith:QQUBI75Q

pith:2007:QQUBI75QY5ODMGIMBKVLNMIPQZ

not attested not anchored not stored refs pending

On the Security of the Y-00 (AlphaEta) Direct Encryption Protocol

Ranjith Nair & Horace P. Yuen

arxiv:quant-ph/0702093 v2 · 2007-02-09 · 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{QQUBI75QY5ODMGIMBKVLNMIPQZ}

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	2026-07-04T14:59:47.748396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8428147fb0c75c36190c0aaab6b10f8678453ec5a30360decdbae5483bcc3492

Aliases

arxiv: quant-ph/0702093 · arxiv_version: quant-ph/0702093v2 · doi: 10.48550/arxiv.quant-ph/0702093 · pith_short_12: QQUBI75QY5OD · pith_short_16: QQUBI75QY5ODMGIM · pith_short_8: QQUBI75Q

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/QQUBI75QY5ODMGIMBKVLNMIPQZ \
  | 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: 8428147fb0c75c36190c0aaab6b10f8678453ec5a30360decdbae5483bcc3492

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7b2d8ec47cf43acbab0ea6ef5792e992533f5fabfc645bb6ca5e6dfcb8e041b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-02-09T22:22:55Z",
    "title_canon_sha256": "f201789d134efac7bad59e5f48aed9b7141f52fc4999a44f6cb309a02b25bb9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0702093",
    "kind": "arxiv",
    "version": 2
  }
}