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Overview

Utexo does not hold user funds in custody. Signed intent parameters, deterministic protocol rules, and chain-specific settlement mechanisms control asset movement throughout execution.

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Resolver permissions

A resolver can:
  • Transfer user-approved assets into the settlement mechanism associated with the swap.
  • Execute the swap under the signed intent parameters.
  • Withdraw escrowed assets only after fulfillment verification confirms compliance with the swap conditions.
A resolver cannot:
  • Withdraw escrowed assets before fulfillment verification.
  • Access assets associated with another swap.
  • Transfer user assets outside the authorized execution flow.
  • Modify the conditions defined in the signed intent.
If execution does not complete within the applicable time constraints, the swap enters its network-specific refund or revert path.

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Architecture and settlement

Utexo uses cryptographic time constraints and network-native escrow mechanisms to coordinate cross-chain settlement. Each swap uses an isolated settlement mechanism. Ethereum, other EVM networks, and Tron use a dedicated escrow instance for each swap. Swap-level isolation prevents funds associated with one swap from being exposed to another. Resolvers provide liquidity and perform the on-chain operations required to fulfill signed intents. Protocol rules restrict a resolver to the assets, amount, destination, and time constraints authorized by the user.