30 Compute Units.
Parameters
start_block_index- Int32 - Required - An integer representing the starting block index for the shielded TRC20 contract eventsend_block_index- Int32 - Required - An integer representing the ending block index for the shielded TRC20 contract eventsshielded_TRC20_contract_address- String - Required - The address of the shielded TRC20 contractovk- String - Required - A string representing the optional viewing key (ovk) for the shielded TRC20 contractvisible- boolean - Required - A boolean value indicating whether the events should be visible or not
Returns
is_spent - indicates whether the specified shielded TRC20 contract note has been spent or not