Pith Number

pith:IWN4VUTF

pith:2005:IWN4VUTFWLYUD26KTCS7LICGPZ

not attested not anchored not stored refs pending

Eavesdropping on the "Ping-Pong" Quantum Communication Protocol Freely in a Noise Channel

Chun-Yan Li, Fu-Guo Deng, Hong-Yu Zhou, Ping Zhou, Xi-Han Li

arxiv:quant-ph/0507143 v2 · 2005-07-15 · 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{IWN4VUTFWLYUD26KTCS7LICGPZ}

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	2026-07-04T16:58:05.402346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

459bcad265b2f141ebca98a5f5a0467e6604e6634846fec9f1e2f564b3b1ed2a

Aliases

arxiv: quant-ph/0507143 · arxiv_version: quant-ph/0507143v2 · doi: 10.48550/arxiv.quant-ph/0507143 · pith_short_12: IWN4VUTFWLYU · pith_short_16: IWN4VUTFWLYUD26K · pith_short_8: IWN4VUTF

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/IWN4VUTFWLYUD26KTCS7LICGPZ \
  | 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: 459bcad265b2f141ebca98a5f5a0467e6604e6634846fec9f1e2f564b3b1ed2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56738c60e5a44c93587cb57d4d554e008a0fc0b81839bbcc180e800de8e83b03",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-07-15T04:58:49Z",
    "title_canon_sha256": "0a8ff6fbf02db2687cb9793cbeb063f664544e042f74d8a51d75e4bbfcb7b86c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0507143",
    "kind": "arxiv",
    "version": 2
  }
}