Playmint: Web3 platform.
An on-chain platform built with React and .NET, with Solidity contracts on Ethereum using OpenZeppelin. Wallet connection, contract calls and transaction state are wrapped so a non-crypto user is never left guessing what happened.
Anonymised case study. Project names are aliases used to protect client confidentiality. The case study covers the project’s challenge, approach, technology and outcome.
The challenge.
- The product needed to transact on-chain while staying approachable for non-crypto users.
- Wallets, tokens and contract calls had to be wired safely into a clean interface.
- On-chain state had to reconcile with an off-chain view users could trust.
- Gas costs, failed transactions and pending states had to be communicated honestly rather than hidden.
Our approach.
- Built the interface with React, integrating wallet connection and signing.
- Wired on-chain interactions through Web3.js, Solidity, Ethereum and OpenZeppelin.
- Reconciled on-chain events with an off-chain read model for fast, readable state.
- Kept flows guarded so users understand each transaction before signing.
- Surfaced transaction state honestly — pending, confirmed, failed — with clear recovery paths.
The outcome.
- Users transact on-chain from an interface that hides the plumbing.
- On-chain and off-chain state stay reconciled and readable.
- The contract layer is isolated so it can evolve safely.
- Users always know the true state of a transaction, including when it fails.
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Where AI fits in financial services.
Retrieval over policies, filings and statements, assistants for analysts and operations teams, and document checks that leave an audit trail a regulator can follow.
Explore AI developmentClient feedback on our work, separate from the anonymised project described above.
As well as being exceptional technically, they consistently invest the time to understand the product and suggest how it can be enhanced and improved.
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