SubVT is a native mobile application for iOS and Android phones, tablets and wearables that provides node operators with tools that aid them in running their validators on any Substrate-based blockchain network.

Please find below the deliverables for milestones 1-3 (covered by motion 326), information on the ongoing work, and outstanding items for milestones 4-5.

This spending proposal is to cover the expenses of milestones 4-5, 18,680.00 EUR as planned in the initial spending proposal document, equivalent to 82.2314 KSM with the EUR-USD and USD-KSM (EMA30) exchange rates of 24.02.2022.

We're planning to begin open beta testing in early May initially on Polkadot and Kusama, and release mid-June as we continue with support for more networks and feature updates.

Milestones 1-3 Deliverables

Milestone 1

1. Milestone report.
2. Use cases and feature documentation.
3. System architecture document.
4. Data definition document for design.

Milestone 2

1. Branding document.
2. Design document.
3. Design assets.
4. UX map on Figma.
5. UX design on Figma.
6. Service specifications for REST and WS RPC services.
   1. Application REST service OpenAPI specification.
   2. Report REST service OpenAPI specification.
   3. Live network status WS RPC service specification.
   4. Validator list WS RPC service specification.
   5. Validator details WS RPC service specification.

Milestone 3

1. Backend implementation.
2. UI design.
3. Landing site design (non-functional) @ subvt-test.helikon.io.

Work To Do

Ongoing

1. Time-series database queries for off-chain Telemetry notifications (best/finalized block height, uptime, up/download bandwidth, peer count, transaction queue length).
2. More integration tests and Prometheus integration for the backend.
3. Notification content templates for different channels (push notification, SMS, email - working with the design team for these) and text-to-speech content for GSM calls .
4. Twilio integration for SMS and GSM notifications - near completion.
5. Backend data access frameworks for iOS (Swift) and Android (Kotlin).

Milestone 4

1. Complete iOS and Android application development.
2. Work with the design team for emergent changes.
3. Begin alpha testing.

Milestone 5

1. Beta testing & QA.