Before revision: There are two bits which are relevant: Bit 2 in the Channel Status subchannel is the "Cp" bit indicating whether the source signal is copyrighted or not: 0 means copyrighted, 1 means not copyrighted Bit 15 in the Channel Status subchannel is the "L" bit indicating whether the source signal is an original medium (such as an audio CD or a prerecorded DCC tape) or "not determined".
After revision: There are two bits which are relevant: Bit 2 in the Channel Status subchannel is the "Cp" bit indicating whether the source signal is copyrighted or not: 0 means copyrighted, 1 means not copyrighted Bit 15 in the Channel Status subchannel is the "L" bit indicating whether the source signal is an original medium (such as a prerecorded DCC tape) or "not determined".