Bonded Response Module

1. Introduction

The Bonded Response Module is a contract that allows users to propose a response for a request by bonding tokens.

decodeRequestData: Decodes request parameters.
propose: Proposes a response for a request, bonding the proposer's tokens. A response cannot be proposed after the deadline or if an undisputed response has already been proposed.
releaseUnutilizedResponse: Releases the proposer funds if the response is valid and it has not been used to finalize the request.
finalizeRequest: Finalizes the request, paying the proposer of the final response.

accountingExtension: The address holding the bonded tokens. It must implement the IAccountingExtension.sol interface.
bondToken: The ERC20 token used for bonding.
bondSize: The amount of tokens the disputer must bond to be able to dispute a response.
deadline: The timestamp at which the module stops accepting new responses for a request and it becomes finalizable.

Early finalization: It is possible for pre-dispute modules to atomically calculate the correct response on-chain, decide on the result of a dispute and finalize the request before its deadline.
Dispute window: Prevents proposers from submitting a response 1 block before the deadline and finalizing it in the next block, leaving disputers no time to dispute the response.
Unutilized response: A correct response that has not been used to finalize the request. Consider what happens when the first response to a request is disputed maliciously and someone sends a second response with the same content. In that case if the second response isn't disputed and the first one comes back from the dispute and is accepted as the final response, the second proposer should be able to get his bond back.