Pith Number

pith:PV4MWSBY

pith:2018:PV4MWSBY7T5WK2M5MADTNWCWCD

not attested not anchored not stored refs pending

Large scale quantum key distribution: challenges and solutions

Cheng-Zhi Peng, Feihu Xu, Jian-Wei Pan, Qiang Zhang, Yu-Ao Chen

arxiv:1809.02291 v1 · 2018-09-07 · 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{PV4MWSBY7T5WK2M5MADTNWCWCD}

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	2026-05-18T00:06:17.502554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d78cb4838fcfb65699d600736d85610d9daa40bbf08c91635a97aaecf03b5d4

Aliases

arxiv: 1809.02291 · arxiv_version: 1809.02291v1 · doi: 10.48550/arxiv.1809.02291 · pith_short_12: PV4MWSBY7T5W · pith_short_16: PV4MWSBY7T5WK2M5 · pith_short_8: PV4MWSBY

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/PV4MWSBY7T5WK2M5MADTNWCWCD \
  | 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: 7d78cb4838fcfb65699d600736d85610d9daa40bbf08c91635a97aaecf03b5d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12566c68a516f84e296d11647a5f9d0ae4e60d8cf4f61c81f87b5000f0799b15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-09-07T03:13:49Z",
    "title_canon_sha256": "f1d71745c1dcfaf0b94f9fbca380e3a1fca13ef5cd4186e8986a69e89f77ec87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02291",
    "kind": "arxiv",
    "version": 1
  }
}