 For instance, any programs using a CDDB lookup had to display a CDDB logo while performing the lookup.Then, in March 2001, only licensed applications were provided access to the Gracenote database.New licenses for CDDB1 (the original version of CDDB) were no longer available, so programmers using Gracenote services were required to switch to CDDB2 (a new version incompatible with CDDB1).