Acronis Cyber Notary Cloud is a blockchain-based service for file notarization, e-signing, and verification for businesses. It creates a unique digital fingerprint for files and stores them in a public blockchain ledger, which enables independent validation of authenticity and proof that the file existed at a specified date and time. The service computes a cryptographic hash that is unique for each file. This hash is an algorithm that produces the same output when given the exact same input file, making it useful for verifying the file's authenticity. A hash of the whole structure containing the files' fingerprints is recorded into the blockchain using Ethereum blockchain technology to record and verify notarizations. Any change in the input file results in a different fingerprint. The hash algorithm works only in one direction, making it impossible to determine the original file inputs from the output alone, creating a tamper-proof process. The service enables electronic signing of documents with user identification and document integrity. It provides validation capabilities for confirming files are authentic and unchanged from their backup. Common uses include property records, court documents, and long-term archives that could be subject to legal or tax audits.
