Pith Number

pith:C3QQSKH6

pith:2018:C3QQSKH6LREPPYPBGWC5VQC5FJ

not attested not anchored not stored refs pending

Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters

Andrew J. Shields, James F. Dynes, Marco Lucamarini, Zhiliang Yuan

arxiv:1811.06826 v1 · 2018-11-16 · 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{C3QQSKH6LREPPYPBGWC5VQC5FJ}

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	2026-05-18T00:00:33.788182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16e10928fe5c48f7e1e13585dac05d2a4f304d64c22e7192c653a0f64c2f1616

Aliases

arxiv: 1811.06826 · arxiv_version: 1811.06826v1 · doi: 10.48550/arxiv.1811.06826 · pith_short_12: C3QQSKH6LREP · pith_short_16: C3QQSKH6LREPPYPB · pith_short_8: C3QQSKH6

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/C3QQSKH6LREPPYPBGWC5VQC5FJ \
  | 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: 16e10928fe5c48f7e1e13585dac05d2a4f304d64c22e7192c653a0f64c2f1616

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "504b1634f863727ef9a31b3e3ef52863574ad0ae18e290421caba6b302dc82c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-11-16T14:52:41Z",
    "title_canon_sha256": "519862890f91ef90dc858a6ab3b7be5a1cd50940024b0db03f575a973c5e23c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06826",
    "kind": "arxiv",
    "version": 1
  }
}