Blockchain application development
We build blockchain applications that hold up in production – smart contracts, wallets, dApps and on-chain data – designed security-first, built for the rules that now govern digital assets, and used only where a shared ledger does the job better than a database.
What is blockchain application development?
Blockchain application development is the design and build of software that records transactions or assets on a shared ledger no single party controls. It combines smart contracts – programs that run on the chain – with the wallets, apps, APIs and data services people actually use. Done well, the chain is a small, carefully secured part of a larger, conventional system.
- Several organisations need one record that none of them controls alone
- Assets, rights or payments must move between parties without a central intermediary
- Every change needs a tamper-evident trail anyone can verify
- You are issuing or accepting tokens, stablecoins or other digital assets
- One organisation owns the data and everyone trusts it – a database is simpler, faster and cheaper
- Records must be corrected or erased on request, as with personal data under GDPR
- High-volume, low-latency work that needs no outside verification
What goes into a blockchain application that holds up
The chain is a small part of the system. Safety and usability come from everything around it.
Smart contracts
Contracts written, tested and documented for EVM networks such as Ethereum and its layer-2 networks, with upgrade and emergency-stop paths agreed up front.
Wallets and sign-in
Custodial and self-custody wallets, and smart accounts that let people sign in with passkeys instead of handling seed phrases.
dApps and portals
Web, mobile and desktop apps that make every on-chain action clear: what will happen, what it costs and when it is final.
On-chain data and dashboards
Indexing, analytics and alerts on on-chain activity, joined with your own data – as in the crypto dashboard we built for Whaleworks.
Integration with your systems
APIs and oracles that connect contracts to payments, identity checks, ERP and reporting, so the ledger fits how the business already runs.
Security and compliance
Threat modelling, automated analysis and an independent audit before launch, with KYC and anti-money-laundering checks designed in where your obligations require them.
Part of AI-native custom software development
Blockchain application development is one capability of AI-native custom software development. It draws on the capabilities below, each explained in full on its own service page.
Works best with
Other capabilities a blockchain application usually needs, each explained in full on its own service page.
How we deliver it
- 01
Decide if blockchain fits
A short assessment of the problem, the parties and the rules – and a straight answer if a database would serve you better.
- 02
Design the system
Chain, custody model, token design and the off-chain architecture, with threats and regulatory duties mapped.
- 03
Build and test
Contracts and apps built in small releases, with unit, fuzz and testnet testing, then an independent security audit.
- 04
Launch and run
A staged mainnet launch with monitoring, alerts and an incident plan; upgrades follow the governance agreed up front.
- A clear answer on whether – and where – to use a blockchain
- Audited smart contracts with tests and documentation
- Apps that make on-chain actions easy to understand
- Monitoring, alerts and an incident plan for production
- Start with one capabilityA fixed-scope piece of work, such as an assessment, a prototype or a proof of concept.
- Combine capabilities into one projectCapabilities from several services, delivered by one team with one plan and one point of contact.
- Add a dedicated teamEngineers who join your team to build and run it with you.
Selected client work
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Read the articleFrequently asked questions
What is blockchain application development?
It is the design and build of software that records transactions or assets on a shared ledger that no single party controls. Smart contracts run the rules on the chain; wallets, apps, APIs and data services make them usable and connect them to the rest of the business.
When does a business actually need a blockchain?
When several parties need a shared record that none of them controls, when assets or payments must move between them without a central intermediary, or when an audit trail must be independently verifiable. If one organisation owns and controls the data, a conventional database is usually the better choice – and we will tell you so.
Which blockchains do you build on?
We choose with you, based on cost, speed, security and where your users and partners already are. Most business applications today run on EVM-compatible networks such as Ethereum and its layer-2 networks; permissioned ledgers can suit consortiums that need private data. Where possible we keep the chain swappable.
How do you secure smart contracts?
Security is designed in from the start: threat modelling, well-tested libraries, unit and fuzz testing, static analysis and peer review, then an independent audit before mainnet. After launch we monitor contracts and follow an agreed plan for pausing, upgrading or responding to incidents.
Do you build wallets, tokens and stablecoin payments?
Yes. We build custodial and self-custody wallet flows, token contracts and stablecoin payments, with identity and anti-money-laundering checks where your obligations require them. Rules such as the EU’s MiCA regulation and the US GENIUS Act shape these designs, so we work alongside your legal and compliance advisers.
Have you built blockchain products before?
Yes. For Whaleworks we built a crypto dashboard that combines technical analysis tools with secure cryptocurrency wallet functionality. We also build regulated fintech platforms, such as Kibono’s health spending account platform.