Currently the rolling hash is created by taking the rolling hash for the previous block and hashing it together with the accumulator for the current block. However, it should be changed to have the accumulator for the current block be the hash of the previous block and the previous block's accumulator. This allows the bulletin board to know what the rolling hash should be and immediately detect any mismatches in accumulator history at the time of commitment submission.
Currently the rolling hash is created by taking the rolling hash for the previous block and hashing it together with the accumulator for the current block. However, it should be changed to have the accumulator for the current block be the hash of the previous block and the previous block's accumulator. This allows the bulletin board to know what the rolling hash should be and immediately detect any mismatches in accumulator history at the time of commitment submission.