Solvers

Solvers are actors that find blobs of data in the CrossCall mempool and execute them in bundles. When executing these bundles the solver is required to have three userops submitted in order:

1. send funds to the CrossCall Paymaster to execute any crosschain calls

2. send funds to the signer's smart contract wallet (SCW) to execute the signer's userop

3. execute the signer's userop

Blob data format:

// UserOp Operation Structure: 
type UserOperation struct {
	Sender                string `json:"sender"`
	Nonce                 string `json:"nonce"`
	InitCode              string `json:"initCode"`
	CallData              string `json:"callData"`
	CallGasLimit          string `json:"callGasLimit"`
	VerificationGasLimit  string `json:"verificationGasLimit"`
	PreVerificationGas    string `json:"preVerificationGas"`
	MaxFeePerGas          string `json:"maxFeePerGas"`
	MaxPritorityFeePerGas string `json:"maxPriorityFeePerGas"`
	PaymasterAndData      string `json:"paymasterAndData"`
	Signature             string `json:"signature"`
}

// Execution Data Structure:
type ExecutionData struct {
	DestinationChain string `json:"destinationChain"`
	TargetAddress    string `json:"targetAddress"`
	Asset            string `json:"asset"`
	Amount           string `json:"amount"`
	Calldata         string `json:"calldata"`
}

// Executable Blob
type ExecutableBlob struct {
	ExecutionRequest ExecutionData `json:"execution"`
	UserOp           UserOperation `json:"userop"`
}

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Becoming a solver:

Coming soon! 🚧