CASE STUDY

BLINK BITCOIN BANKING APP

BeAWhale designed and developed Bink – a Bitcoin banking app built on Botanix Layer 2 that lets users earn BTC yield, borrow at 0–2%, buy Bitcoin with fiat, and send payments globally. Shipped across iOS and Android in 8 weeks for one of the most well-funded Bitcoin L2 teams in the industry.

THE CHALLENGE

USE BITCOIN FOR
BANKING

Bitcoin holds over $2 trillion in value, but for most holders it just sits there. The tools to earn yield, borrow against it, or spend it require navigating DeFi protocols, managing wallets, and understanding gas fees – a world most people aren’t willing to enter.

Botanix Labs came to BeAWhale with a clear brief: build a consumer-grade mobile app that makes Bitcoin work like a bank account. Earn yield from real on-chain activity on the Botanix Layer 2. Borrow USDC against your BTC at 0–2%. Buy Bitcoin with a credit card. Send money anywhere. All without the user ever needing to know they’re touching a blockchain.

FEATURES

What we built FOR MVP

Innovative Web3 services powering your
digital future

BTC Yield

Users deposit BTC or USDC and earn real yield from transaction fees on the Botanix Layer 2. The dashboard shows balances, APR, earnings history, and transaction activity — all updating in real time via a polling-based system.

DeFi Borrowing

Borrow USDC against your Bitcoin at 0–2% via Dolomite protocol integration. Loan overview, repayment tracking, and cost breakdowns — presented as a simple banking experience, not a DeFi interface.

On-Ramp & Payments

Buy Bitcoin with fiat via Moonpay integration. Send BTC or stablecoins globally with memo support and rate conversions. Botanix transfer endpoints handle the settlement.

Auth & Referrals

Privy-powered login with wallet generation and biometric auth. Invite-only access via referral code system with tracking dashboard. Dockerized backend, CI/CD pipelines, staging environment, and Sentry monitoring.

KEY FEATURE

How WE TURNED BITCOIN INTO YIELD

The user experience is three steps – download, deposit, earn. What happens underneath involves multiple blockchain protocols coordinated through BeAWhale’s backend.

01 Deposit

User deposits BTC or USDC – or buys BTC via Moonpay fiat on-ramp

02 Index

Custom deposit indexer tracks and confirms on-chain transactions

03 Earn

BTC earns yield from Botanix L2 transaction fees – real economic activity

04 Spend

Borrow, send, or withdraw – the user stays in control of their Bitcoin

DETAILED

What you might want to KNOW

How fast can you deliver a blockchain MVP?

We delivered Bink in 8 weeks – including backend APIs, blockchain integrations, deposit indexing, Dockerized deployment, CI/CD pipelines, Sentry monitoring, and a staging environment alongside the consumer-facing iOS and Android apps. A production-ready blockchain MVP is realistic within two or three months.

Can you build a DeFi or blockchain-based mobile app? Yes. Bink integrates the Botanix Bitcoin Layer 2, Dolomite lending protocol, Privy wallet infrastructure, and Moonpay fiat on-ramp – all shipped as a consumer-grade banking experience across iOS and Android in 6 weeks.

Do you handle protocol integrations or just the app layer? We go deep. For Bink, we integrated four separate protocols and built a custom deposit tracking indexer – handling smart contract interaction, rate conversions, and on-chain transaction monitoring as part of the backend build. You don’t need a separate blockchain team.

Do you build both the apps and the backend?

Full-stack, always. For Bink that meant iOS and Android clients, backend APIs, blockchain integrations, a deposit tracking indexer, Docker deployment, CI/CD, Sentry monitoring, and a staging environment. You get a complete production system, not a frontend that needs wiring up.

Have you worked with funded crypto companies?

Yes. We built Bink for Botanix Labs – a Bitcoin Layer 2 company backed by Polychain Capital, Galaxy Digital, and Fireblocks with $11.5 million in funding. We also work with blockchain and technology clients at earlier stages.

What types of products does BeAWhale build?

Cross-platform mobile apps, web platforms, AI integrations, and blockchain solutions. We work across DeFi, fintech, consumer products, and enterprise – from 6-week MVPs like Bink to ongoing platform builds. Every engagement includes deployment and infrastructure, not just code.