# Relysia: Bitcoin Wallet & Blockchain Infrastructure

> A non-custodial Bitcoin SV wallet plus Blockchain-as-a-Service APIs: self-custody for users, and wallet infrastructure for developers building their own apps.

- URL: https://nexentrasolutions.tech/portfolio/relysia
- Type: Web platform
- Year: 2022
- Attribution: Team experience: delivered by Nexentra team members before or independently of Nexentra Solutions. Not a Nexentra client project.

A self-custody wallet for users, and wallet infrastructure for developers

## Challenge

Crypto products have two audiences with different needs. People need a wallet that is simple and safe enough to trust with real assets. Developers need reliable infrastructure to add wallet features without building the blockchain plumbing themselves. Many platforms serve one of them well, and custodial shortcuts put users' keys at risk.

## Solution

Team members worked on a platform that serves both. Users of the non-custodial wallet control their own mnemonics and private keys. Structured APIs and the Relysia JS SDK let other applications create wallets, read transaction history and work with BSV token protocols. Careful UI flows, risk alerts and error handling cover the steps that can't be undone and the network problems that do happen.

## Deliverables

Production web and mobile experiences for wallet creation, sending and receiving, token minting, address management and transaction history, plus SDK integrations, authentication and session flows, and performance work to the standard financial applications need.

## Process

- **Discover & Define**: Mapped the wallet security requirements, the self-custody model and the API surface developers needed.
- **Design & Prototype**: Designed flows for sending, receiving, wallet creation and token minting across platforms, with extra care at irreversible steps.
- **Develop & Build**: Integrated the wallet infrastructure APIs and the Relysia SDK, with thorough error handling and established cryptographic practices.
- **Deploy & Support**: Worked on performance and reliability under live blockchain conditions, with monitoring and regular iteration.

## What the platform offers

- **Self-custody**: Users hold their own mnemonics and private keys; the platform does not hold their assets.
- **Wallet APIs and SDK**: Structured endpoints and a JS SDK let other applications add wallet creation, transactions and token operations.
- **Careful transaction UX**: Risk alerts, clear confirmations and error handling make each crypto operation predictable.

> Worked on self-custody flows and SDK integrations for a Bitcoin SV wallet: wallet UX for people holding real assets, and infrastructure other developers build on.
>
> — Talha Rasool, CEO