Transactions on the Blockchain network are confirmed by a network of thousands of computers. This eliminates almost all human involvement in the verification process, resulting in less human error and accurate information recording. Even if a computer on the network makes a computational error, the error is only made to a copy of the blockchain. In order for this error to spread to the rest of the blockchain, it must be done by at least 51% of the computers on the network, which is almost impossible for a Bitcoin-sized network that is large and growing.