Pith Number

pith:DDFFMRJW

pith:2000:DDFFMRJWXMU26ILFVP3QXNPFWQ

not attested not anchored not stored refs pending

Simple Proof of Security of the BB84 Quantum Key Distribution Protocol

John Preskill (Caltech), Peter W. Shor (AT&T Labs Research)

arxiv:quant-ph/0003004 v2 · 2000-03-01 · 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{DDFFMRJWXMU26ILFVP3QXNPFWQ}

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.

Cited by

1 paper in Pith

Optimal fidelity estimation when one state is pure via algorithmic Uhlmann transform

Receipt and verification

First computed	2026-07-04T15:36:41.682915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18ca564536bb29af2165abf70bb5e5b41684dc000ac3f9b6a2f4a774e5a348b0

Aliases

arxiv: quant-ph/0003004 · arxiv_version: quant-ph/0003004v2 · doi: 10.48550/arxiv.quant-ph/0003004 · pith_short_12: DDFFMRJWXMU2 · pith_short_16: DDFFMRJWXMU26ILF · pith_short_8: DDFFMRJW

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/DDFFMRJWXMU26ILFVP3QXNPFWQ \
  | 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: 18ca564536bb29af2165abf70bb5e5b41684dc000ac3f9b6a2f4a774e5a348b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8db83c6d3c4a7d0816362b137c5ca63eb486753cbce8060c88f194142ba2934",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-03-01T19:17:35Z",
    "title_canon_sha256": "8d853bf125ad5e3d05a37f740dde2183bd0ecc6fc18a75a20312bd45eb4dd2bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0003004",
    "kind": "arxiv",
    "version": 2
  }
}