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](https://kusama.polkassembly.io/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](https://docs.google.com/document/d/1mCD1lRoEwbV3Xp5N-HzEKA0KROCmNkMFInLGd4nAz-k/edit?usp=sharing), equivalent to **82.2314 KSM** with the EUR-USD and USD-KSM ([EMA30](https://kusama.subscan.io/tools/charts?type=price)) 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](https://github.com/helikon-labs/subvt/tree/main/document/project/01-milestone_01_report.md).
2. Use cases and feature [documentation](https://github.com/helikon-labs/subvt/issues?q=is%3Aopen+is%3Aissue+label%3Afeature).
3. System architecture [document](https://github.com/helikon-labs/subvt/tree/main/document/software/01-subvt_system_architecture.md).
4. Data definition [document](https://docs.google.com/document/d/1gVGHBSqji-XJc6luvLDm3ilq08LMVb2hhC3EqZ5jr5Q/edit?usp=sharing) for design.

### Milestone 2
1. Branding [document](https://drive.google.com/file/d/1Bwn919_43cp30fwmVazKl8BEoCmetw6L/view?usp=sharingf).
2. Design [document](https://drive.google.com/file/d/1sZUt4GM0ghOm0bAdAEWUMF-ujsfR_Zbo/view?usp=sharing).
3. Design [assets](https://github.com/helikon-labs/subvt/tree/main/assets/design).
4. UX map on [Figma](https://www.figma.com/file/XzSssIXskyo8aMTc1myClC/?node-id=178:350).
5. UX design on [Figma](https://www.figma.com/file/XzSssIXskyo8aMTc1myClC/?node-id=0:1).
6. Service specifications for REST and WS RPC services.
	1. Application REST service OpenAPI [specification](https://helikon-labs.stoplight.io/docs/subvt/YXBpOjM0Mjg0NzAw-sub-vt-application-service).
    2. Report REST service OpenAPI [specification](https://helikon-labs.stoplight.io/docs/subvt/YXBpOjM0MDAzMjEz-sub-vt-report-service).
	3. Live network status WS RPC service [specification](https://github.com/helikon-labs/subvt-backend/blob/main/subvt-live-network-status-server/README.md).
	4. Validator list WS RPC service [specification](https://github.com/helikon-labs/subvt-backend/blob/main/subvt-validator-list-server/README.md).
	5. Validator details WS RPC service [specification](https://github.com/helikon-labs/subvt-backend/blob/main/subvt-validator-details-server/README.md).

### Milestone 3
1. Backend [implementation](https://github.com/helikon-labs/subvt-backend).
2. UI [design](https://www.figma.com/file/XzSssIXskyo8aMTc1myClC/?node-id=178:603).
3. Landing site design (non-functional) @ [subvt-test.helikon.io](http://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).
4. More integration tests and Prometheus integration for the backend.
2. 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 .
3. Twilio integration for SMS and GSM notifications - near completion.
4. Backend data access frameworks for iOS (Swift) and [Android (Kotlin)](https://github.com/helikon-labs/subvt-data-android).

### 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.


Approve a proposal. At a later time, the proposal will be allocated to the beneficiary
and the original deposit will be returned.

May only be called from `T::ApproveOrigin`.

# <weight>
- Complexity: O(1).
- DbReads: `Proposals`, `Approvals`
- DbWrite: `Approvals`
# </weight>

- SubVT is a mobile app for node operators on blockchain networks.
- The post discusses the deliverables for milestones 1-3 and the ongoing work.
- Milestones 4-5 will cover expenses and include completing app development and testing.
- The app will be released in mid-June with support for more networks and feature updates.
- The post includes links to various documents and specifications related to the project.

#426 SubVT (Subtrate Validator Toolkit) Milestones 4-5 of 5