Pith Number

pith:HUHEE7WR

pith:2019:HUHEE7WR4CVKQYNUIHX5TAXWIL

not attested not anchored not stored refs pending

A Modulator-Free Quantum Key Distribution Transmitter Chip

Andrew J. Shields, Davide G. Marangon, Innocenzo De Marco, James F. Dynes, Marco Lucamarini, Taofiq K. Para\"iso, Thomas Roger, Zhiliang Yuan

arxiv:1904.02486 v1 · 2019-04-04 · 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{HUHEE7WR4CVKQYNUIHX5TAXWIL}

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	2026-05-17T23:44:06.949878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0e427ed1e0aaa861b441efd982f642d507b4a3a46ed17e9c89b68f358d451c

Aliases

arxiv: 1904.02486 · arxiv_version: 1904.02486v1 · doi: 10.48550/arxiv.1904.02486 · pith_short_12: HUHEE7WR4CVK · pith_short_16: HUHEE7WR4CVKQYNU · pith_short_8: HUHEE7WR

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/HUHEE7WR4CVKQYNUIHX5TAXWIL \
  | 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: 3d0e427ed1e0aaa861b441efd982f642d507b4a3a46ed17e9c89b68f358d451c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa11e7ec76493956af34de21b841ff7b418f36c3e9b65abf206023f480b226fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-04T11:15:55Z",
    "title_canon_sha256": "781ce0507d9e64e3e75f9476466ca4e2bbdcfb3e1202997388e17d7226a0c82d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02486",
    "kind": "arxiv",
    "version": 1
  }
}