Data modification in a dispersed storage network

A non-transitory computer readable storage device comprises:

• a first storage section that stores operational instructions that, when executed by a first computing device, causes the first computing device to:
• receive a media broadcast for storage in dispersed storage network (DSN) memory;
• dispersed storage error encode, in accordance with dispersed storage error encoding parameters, the media broadcast to produce a first plurality of sets of encoded data slices;
• output the first plurality of sets of encoded data slices to the DSN memory for storage therein;
• a second storage section that stores operational instructions that, when executed by a second computing device, causes the second computing device to:
• receive the media broadcast;
• dispersed storage error encode, in accordance with the dispersed storage error encoding parameters, the media broadcast to produce a second plurality of sets of encoded data slices;
• output the second plurality of sets of encoded data slices to the DSN memory for storage therein;
• a third storage section that stores operational instructions that, when executed by the first, the second, or a third computing device, causes the first, the second, or the third computing device to:
• retrieve a decode threshold number of non-redundant encoded data slices for a data segment of the media broadcast, wherein encoded data slices of the decode threshold number of non-redundant encoded data slices are from a first corresponding set of encoded data slices of the first plurality of sets of encoded data slices corresponding to a first at least one pillar of a plurality of pillars specified by the dispersed storage error encoding parameters and a second corresponding set of encoded data slices of the second plurality of sets of encoded data slices corresponding to a second at least one pillar that is non-overlapping with the first at least one pillar of the plurality of pillars specified by the dispersed storage error encoding parameters, wherein the decode threshold number of non-redundant encoded data slices is a minimum number of encoded data slices required to recover the data segment, and wherein an individual encoded data slice of the decode threshold number of non-redundant encoded data slices yields substantially no information regarding the data segment.