Pith Number

pith:ZRMU44XE

pith:2014:ZRMU44XEITDLKOUQDVQFNM423H

not attested not anchored not stored refs pending

Quantum key distribution over a 72 dB channel loss using ultralow dark count superconducting single-photon detectors

Hiroyuki Shibata, Kaoru Shimizu, Toshimori Honjo

arxiv:1408.0562 v1 · 2014-08-04 · quant-ph · cond-mat.supr-con · cs.CR · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZRMU44XEITDLKOUQDVQFNM423H}

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	2026-05-18T01:42:25.880194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc594e72e444c6b53a901d6056b39ad9d6b5f3f290cb1da3612cda86a040db4b

Aliases

arxiv: 1408.0562 · arxiv_version: 1408.0562v1 · doi: 10.48550/arxiv.1408.0562 · pith_short_12: ZRMU44XEITDL · pith_short_16: ZRMU44XEITDLKOUQ · pith_short_8: ZRMU44XE

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/ZRMU44XEITDLKOUQDVQFNM423H \
  | 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: cc594e72e444c6b53a901d6056b39ad9d6b5f3f290cb1da3612cda86a040db4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ce8da7dc17cd98f311410b83971039f787c18396d3267e5665ae715576c9714",
    "cross_cats_sorted": [
      "cond-mat.supr-con",
      "cs.CR",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-08-04T01:41:51Z",
    "title_canon_sha256": "58b07ce8e7d2e406faf935c4450dc29dcb25a05e7f60d945ec67bc83c8e9e81c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0562",
    "kind": "arxiv",
    "version": 1
  }
}