Pith Number

pith:WN6AVPQT

pith:2013:WN6AVPQT54Z2RCQJWCO4Z3JBAO

not attested not anchored not stored refs pending

Improvement of two-way continuous-variable quantum key distribution using optical amplifiers

Christian Weedbrook, Hong Guo, Maozhu Sun, Song Yu, Wanyi Gu, Xiang Peng, Yi-Chen Zhang, Zhengyu Li

arxiv:1307.7590 v2 · 2013-07-29 · 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{WN6AVPQT54Z2RCQJWCO4Z3JBAO}

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	2026-05-18T02:58:23.458877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b37c0abe13ef33a88a09b09dcced21039ffce4c72d1e26ce25522ead4c77de3a

Aliases

arxiv: 1307.7590 · arxiv_version: 1307.7590v2 · doi: 10.48550/arxiv.1307.7590 · pith_short_12: WN6AVPQT54Z2 · pith_short_16: WN6AVPQT54Z2RCQJ · pith_short_8: WN6AVPQT

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/WN6AVPQT54Z2RCQJWCO4Z3JBAO \
  | 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: b37c0abe13ef33a88a09b09dcced21039ffce4c72d1e26ce25522ead4c77de3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bef6507d19f7ba1b620f4c4fb32aaf16ca3e799621740252dbfbaaa269ae6b71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-07-29T14:14:07Z",
    "title_canon_sha256": "67884b28ffb1bd51ab8c4d11597b9139bdf8de6c81a552d6d193827b421831b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7590",
    "kind": "arxiv",
    "version": 2
  }
}