Pith Number

pith:HDKHO53A

pith:2005:HDKHO53AAARXENER32PDFQSVLO

not attested not anchored not stored refs pending

On the Optimality of Quantum Encryption Schemes

Daniel Nagaj, Iordanis Kerenidis

arxiv:quant-ph/0509169 v2 · 2005-09-23 · 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{HDKHO53AAARXENER32PDFQSVLO}

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	2026-05-18T01:37:57.411589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38d47777600023723491de9e32c2555bbb676d1b500ed4ccffd6eb80ef4a0231

Aliases

arxiv: quant-ph/0509169 · arxiv_version: quant-ph/0509169v2 · doi: 10.48550/arxiv.quant-ph/0509169 · pith_short_12: HDKHO53AAARX · pith_short_16: HDKHO53AAARXENER · pith_short_8: HDKHO53A

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/HDKHO53AAARXENER32PDFQSVLO \
  | 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: 38d47777600023723491de9e32c2555bbb676d1b500ed4ccffd6eb80ef4a0231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc33e648bd28eaaefc352398e6eac13101a5f3ef41c21f1980e0ebd850c5f781",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-09-23T12:58:44Z",
    "title_canon_sha256": "19dbc76a00888d40d9c6422ae8e1d463916ade7636eeb1dc454e86329e3e17fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0509169",
    "kind": "arxiv",
    "version": 2
  }
}