Both Acronis products are designed to prevent data tampering. Notary protects ledgers by storing data in a universally distributed database against which records can be verified. Acumatica's announcement says, ASign "allows multiple parties to execute and certify a document with a secure and publicly auditable digital signature." In general, blockchain technology protects by appending transactions as they are made so that all parties have access to all parts of the transaction. Acumatica CEO Jon Roskill said blockchain could prevent such practices as an employee altering a $3,000 invoice to $2,000 on company books and pocketing the $1,000 difference paid by the invoiced party. Blockchain ensures the original is stored across the cloud-based database to that the amount can be verified.