Pith Number

pith:HB7VVUB4

pith:2009:HB7VVUB44E7NJJOIS4TMDGAWQ7

not attested not anchored not stored refs pending

200km Decoy-state quantum key distribution with photon polarization

Cheng-Zhi Peng, Hao Liang, Jian Wang, Jian-Wei Pan, Jin-Hong Wang, Lin Yang, Luo-Kan Chen, Shu-Bin Liu, Teng-Yun Chen, Wen-Qi Cai, Xu Wan, Yang Liu, Zeng-Bing Chen

arxiv:0908.4063 v1 · 2009-08-27 · 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{HB7VVUB44E7NJJOIS4TMDGAWQ7}

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	2026-05-18T03:42:12.262738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

387f5ad03ce13ed4a5c89726c1981687e1db587c2298f2f48c36af4df7bd4f7a

Aliases

arxiv: 0908.4063 · arxiv_version: 0908.4063v1 · doi: 10.48550/arxiv.0908.4063 · pith_short_12: HB7VVUB44E7N · pith_short_16: HB7VVUB44E7NJJOI · pith_short_8: HB7VVUB4

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/HB7VVUB44E7NJJOIS4TMDGAWQ7 \
  | 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: 387f5ad03ce13ed4a5c89726c1981687e1db587c2298f2f48c36af4df7bd4f7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "900cab24b82e380ab1af795c202ada326a366e61f5121b081da4a8ba44fe3399",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-08-27T18:54:44Z",
    "title_canon_sha256": "31fda224c3510d5d6cb7d5e3f85823e1a3a5bd33e77e52b5c211ed809fa8ccca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4063",
    "kind": "arxiv",
    "version": 1
  }
}