Pith Number

pith:QYE5DTU5

pith:2007:QYE5DTU5TY3GCQQAAOAZZKTCWL

not attested not anchored not stored refs pending

Quantum Hacking: Experimental demonstration of time-shift attack against practical quantum key distribution systems

Bing Qi, Chi-Hang Fred Fung, Christine Chen, Hoi-Kwong Lo, Yi Zhao

arxiv:0704.3253 v3 · 2007-04-24 · 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{QYE5DTU5TY3GCQQAAOAZZKTCWL}

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	2026-05-18T04:25:11.778906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8609d1ce9d9e3661420003819caa62b2cfff2efaaba0a64baf80499b55ca65f3

Aliases

arxiv: 0704.3253 · arxiv_version: 0704.3253v3 · doi: 10.48550/arxiv.0704.3253 · pith_short_12: QYE5DTU5TY3G · pith_short_16: QYE5DTU5TY3GCQQA · pith_short_8: QYE5DTU5

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/QYE5DTU5TY3GCQQAAOAZZKTCWL \
  | 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: 8609d1ce9d9e3661420003819caa62b2cfff2efaaba0a64baf80499b55ca65f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2806037da6639f14dd4e69c3fe5de5ccd3cf6c778b1b596d805c688644a3b8c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-04-24T18:06:00Z",
    "title_canon_sha256": "ab767c14b0c816ec945a1e5d0fc88aa7fc7d4334dfa9f887de87470e54223e4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.3253",
    "kind": "arxiv",
    "version": 3
  }
}