Pith Number

pith:4WTTXS5V

pith:2019:4WTTXS5VRI4LQX6SVNLCSLNSYU

not attested not anchored not stored refs pending

O-Band Differential Phase-Shift Quantum Key Distribution in 52-Channel C/L-Band Loaded Passive Optical Network

Bernhard Schrenk, Hannes H\"ubel, Michael Hentschel

arxiv:1904.02188 v1 · 2019-04-03 · 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{4WTTXS5VRI4LQX6SVNLCSLNSYU}

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	2026-05-17T23:49:24.248894Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a73bcbb58a38b85fd2ab56292db2c512ad78e895be5d7c35d43080a65ec0c3

Aliases

arxiv: 1904.02188 · arxiv_version: 1904.02188v1 · doi: 10.48550/arxiv.1904.02188 · pith_short_12: 4WTTXS5VRI4L · pith_short_16: 4WTTXS5VRI4LQX6S · pith_short_8: 4WTTXS5V

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/4WTTXS5VRI4LQX6SVNLCSLNSYU \
  | 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: e5a73bcbb58a38b85fd2ab56292db2c512ad78e895be5d7c35d43080a65ec0c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73df9cea0fd4d21c8ba2bb2213ee841d42854d9070a22cceb769129599bc584b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-03T18:25:21Z",
    "title_canon_sha256": "6a4749c657b43b61e1f2d044fde7423c2bf7cc58c8c1cbca63863047344fbd10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02188",
    "kind": "arxiv",
    "version": 1
  }
}