async fn validate_scannable_block<P: ProvidesTransactions + ProvidesUnvalidatedScannableBlocks>(
interface: &P,
block: UnvalidatedScannableBlock,
) -> Result<ScannableBlock, InterfaceError>async fn validate_scannable_block<P: ProvidesTransactions + ProvidesUnvalidatedScannableBlocks>(
interface: &P,
block: UnvalidatedScannableBlock,
) -> Result<ScannableBlock, InterfaceError>