Transparency: Blockchain is a public ledger meaning that all transactions, product information, document information, and anything else added to the database is public and can be verified by someone having access to the bitcoin client. This puts extra pressure for ethical practices in business since if people can verify that a business is being unethical in not paying taxes, not treating their products right by employing child labor or mistreating their animal farms, this will have consequences of epic proportions from the government coming after them, to customers switching to another brand, to animal and human rights organizations rightly demonizing them which will affect significantly their revenue and profit.
Security: Whenever a transaction occurs it is being analyzed and verified by the miners, a set of computers in a network. This means that no human error is possible and that the process is automated and based on a protocol or framework which no human can alter. Also, adding the transparency factor of blockchain it makes transactions secure and easily verifiable to avoid fraud or sinister practices. Due to proof of work it is impossible to reverse a transaction or alter it in any way.
Improved traceability: the ledger is not only public can allows you to trace the previous owners of an asset or money and see what it was used for making it far more difficult to cheat or engage in bad practices. In addition, one can see where the ingredients of a product came from and if the businesses selling the product and its ingredients are in fact engaging in ethical practices before making the consumer decision of buying a product.
Increased efficiency and speed: The blockchain is a high availability and global technology and especially network as it is live 24/7/365 and does not go off. Even if a huge chunk of the miners in the network go offline, they will be immediately replaced by other miners who are incentivized to mine to make money. Besides it being available always, it is global meaning that I can send money to any person in the world with a wallet that supports the currency I want to send them. Finally, it is a peer to peer decentralized network meaning that third parties who handle the transactions are not involved to slow down the process.
Reduced cost: As blockchain removes the third party which costs a lot of money it saves cost. Potential other costs that will be saved in the future is the reduced need to travel to verify books and ledger among others by let us say an auditor as this would be easily done in the comfort of his office or home which would save fuel and time for the auditor to focus on something more productive.