Pith Number

pith:27XVBPOI

pith:2017:27XVBPOIXOXAYOXW7IXPIOQ4ZT

not attested not anchored not stored refs pending

Improvement of two-way continuous-variable quantum key distribution with virtual photon subtraction

Hong Guo, Song Yu, Yi-Chen Zhang, Yijia Zhao, Zhengyu Li

arxiv:1707.06790 v1 · 2017-07-21 · 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{27XVBPOIXOXAYOXW7IXPIOQ4ZT}

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	2026-05-18T00:39:51.627397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7ef50bdc8bbae0c3af6fa2ef43a1cccdf0733f683c301d24d8a01eb7ae7aeb8

Aliases

arxiv: 1707.06790 · arxiv_version: 1707.06790v1 · doi: 10.48550/arxiv.1707.06790 · pith_short_12: 27XVBPOIXOXA · pith_short_16: 27XVBPOIXOXAYOXW · pith_short_8: 27XVBPOI

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/27XVBPOIXOXAYOXW7IXPIOQ4ZT \
  | 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: d7ef50bdc8bbae0c3af6fa2ef43a1cccdf0733f683c301d24d8a01eb7ae7aeb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "957e02d011155efcfe74f268aec7088036d070bdc20aa7a95cafe01ecd086467",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-07-21T08:06:11Z",
    "title_canon_sha256": "fbd5e5a02a98c83eb349ea64583326df409d2799dfbf7cf4128bf3807926a9b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.06790",
    "kind": "arxiv",
    "version": 1
  }
}