These numbers are the same. The CAE system was replaced by the IPI system, the new industry standard, in 2001, but the two are often used interchangeably.

These numbers are a 9-digit number that is used to uniquely identify a songwriter or publisher. Rights holders are assigned CAE/IPI numbers when they are granted membership to a PRO. You can find the CAE/IPI of an affiliated songwriter or publisher by performing a repertory search at the respective PRO. Your CAE number is not the same as your PRO member ID or account number. 

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