Blockchain product engineering
Underlabs designs and builds smart-contract products as complete systems: contract logic, wallet experience, backend services, integrations, testing, and a realistic path to production.
confirmation / final
Before the first block
A distributed ledger can make shared state verifiable across organizations. It can also add irreversible actions, transaction fees, key management, new failure modes, and operational complexity.
We begin with the trust boundary and the people using the product. If the system benefits from transparent rules, shared ownership, or independently verifiable history, we define the smallest blockchain surface that solves the problem. If a regular database is the better tool, we will say so.
What we build
We connect on-chain logic to the interfaces, services, and operational tools people actually depend on.
Clear state transitions, permissions, upgrade decisions, failure paths, events, and tests. Designed so another specialist can review the logic.
Web and mobile flows that explain what a user is signing, what it will cost, and what happens while a transaction is pending.
APIs, indexers, jobs, notifications, and admin tools that turn network activity into a product people can understand and operate.
Focused technical validation for a new idea, or a practical review of an older blockchain product before more money is committed.
A practical build path
Irreversible production code is the wrong place to discover that the trust model, signing flow, or operational plan is unclear.
Identify actors, incentives, data ownership, disputes, privacy needs, and what must be independently verifiable.
Decide what belongs on-chain, what stays off-chain, and whether a public, private, or hybrid design fits.
Test the contract state model, wallet interaction, fees, latency, indexing, and recovery experience with a focused prototype.
Implement the product, test normal and adversarial paths, document assumptions, and prepare high-value contracts for independent review.
Plan deployments, permissions, monitoring, incident response, upgrades, and ownership before production value depends on the system.
Where it can fit
Rules and state changes that participating organizations can verify without handing full control to one operator.
Evidence that a record existed, changed, or received approval at a specific point, with sensitive data kept off-chain where appropriate.
Products where users hold or transfer a digital right, and need clear signing, status, and recovery experiences around it.
Fit check
Questions we expect
Not always. It is useful when multiple parties need a shared, verifiable state and no single operator should be able to change the record alone. If a conventional database is simpler and more reliable, we will say so.
The choice depends on users, transaction cost, confirmation model, ecosystem, custody, privacy, throughput, and operational requirements. We compare those constraints before recommending a network or architecture.
Yes. A usable blockchain product usually needs more than contract code. We can build the web or mobile experience, wallet and signing flows, APIs, indexing, notifications, admin tools, and integrations around it.
High-value or irreversible contract systems should normally receive an independent specialist review before production. We design for reviewability, test expected and adversarial paths, and help prepare the system for that review.
Yes. We can review the current product architecture, contract and app boundaries, wallet experience, backend dependencies, and operational risks, then recommend focused next steps without assuming a full rewrite.
Bring the hard questions
Share the product brief, current architecture, contract idea, or problem you are trying to solve. We will start with the constraints.
Discuss your product