Pith Number

pith:S4FA2TRS

pith:2026:S4FA2TRSTRODZRU2DV4H3RDUIQ

not attested not anchored not stored refs pending

Quantum key distribution over a metropolitan network using an integrated photonics based prototype

Alberto Boaron, Giulio Gualandi, Hugo Zbinden, Maria Ana Pereira, Rapha\"el Houlmann, Rebecka Sax, Roberto Osellame, Rob Thew

arxiv:2602.17227 v4 · 2026-02-19 · 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{S4FA2TRSTRODZRU2DV4H3RDUIQ}

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	2026-05-29T01:04:36.964135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

970a0d4e329c5c3cc69a1d787dc474442a8e0797cd832cd0e8c20b9e927b2e7a

Aliases

arxiv: 2602.17227 · arxiv_version: 2602.17227v4 · doi: 10.48550/arxiv.2602.17227 · pith_short_12: S4FA2TRSTROD · pith_short_16: S4FA2TRSTRODZRU2 · pith_short_8: S4FA2TRS

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/S4FA2TRSTRODZRU2DV4H3RDUIQ \
  | 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: 970a0d4e329c5c3cc69a1d787dc474442a8e0797cd832cd0e8c20b9e927b2e7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30398f4523f2f67fb230ebf9c45d965fb80f32c9ddae290ed596db1c08afa124",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-02-19T10:18:37Z",
    "title_canon_sha256": "8695388e8365bf76d5707083e60095161d6a714ff4b78dab87632491dbe81d43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.17227",
    "kind": "arxiv",
    "version": 4
  }
}