ConsumeMultisignatureVerificationGas consumes gas from a GasMeter for verifying a multisig pubkey signature.

NewAnteHandler returns an 'AnteHandler' that will run actions before a tx is sent to a module's handler.

SigVerificationGasConsumer consumes gas for signature verification based upon the public key type.

HandlerOptions extend the SDK's AnteHandler opts by requiring the IBC channel keeper.

MempoolFeeDecorator will check if the transaction's fee is at least as large as the local validator's minimum gasFee (defined in validator config).