Every NFT transaction is a smart contract interaction, and the wallet integration is responsible for constructing the transaction that the smart contract expects. This includes specifying the contract address, the function being called, the parameters that function requires, and the gas estimation for the transaction. An incorrectly constructed transaction will fail on-chain, costing the user gas fees without completing the purchase. A well-built NFT wallet integration prevents these failures by validating the transaction before sending it to the wallet for approval.
27 Blockchain's NFT wallet integration includes the smart contract interaction layer that handles transaction construction, parameter validation, gas estimation, and error handling. The integration is built against the specific smart contracts the marketplace uses, ensuring compatibility between the wallet connection, the transaction format, and the on-chain logic that executes the trade. This contract-level integration is what separates a functional NFT checkout from one that produces failed transactions and frustrated users.