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Web platformTeam experience2022

Relysia

Bitcoin Wallet & Blockchain Infrastructure

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

Year
2022
Screens
04
Attribution
Team experience
Relysia wallet

The brief

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

Relysia wallet pages

01

The 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.

02

The 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.

03

What was delivered

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.

How it was built

From first brief to production.

How this build was organised: 4 stages, each with its own hand-off.
  1. 01

    Discover & Define

    Mapped the wallet security requirements, the self-custody model and the API surface developers needed.

  2. 02

    Design & Prototype

    Designed flows for sending, receiving, wallet creation and token minting across platforms, with extra care at irreversible steps.

  3. 03

    Develop & Build

    Integrated the wallet infrastructure APIs and the Relysia SDK, with thorough error handling and established cryptographic practices.

  4. 04

    Deploy & Support

    Worked on performance and reliability under live blockchain conditions, with monitoring and regular iteration.

Key features

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.

Screens · 04

The platform, page by page.

  • Relysia — page 1
  • Relysia — page 2
  • Relysia — page 3
  • Relysia — page 4

In motion

See it in motion

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

From the team

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 RasoolCEO

Attribution: team experience — built by people now on the Nexentra team, before or independently of Nexentra. It isn't presented as a Nexentra client engagement, and no client outcomes are claimed on anyone's behalf.

New business

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Tell us what you are trying to build. We will tell you honestly whether we are the right team for it — and what it would actually take.

We reply to every enquiry within 1–2 business days. · Lahore, Punjab, Pakistan