--- title: Proving Backup Authenticity with Acronis Notary™ and Blockchain description: Acronis Notary helps you ensure that you recover exactly what you backed up. canonical_url: https://www.acronis.com/en/blog/posts/proving-backup-authenticity-acronis-notarytm-and-blockchain/ locale: en last_updated: 2026-10-27 --- [Acronis Blog](https://www.acronis.com/en/blog/) # Proving Backup Authenticity with Acronis Notary™ and Blockchain Acronis Notary™ creates digital certificates, based on checksums of your files, and then stores these certificates in the blockchain database, Ethereum, to ensure they can never be modified. [Learn More](https://www.acronis.com/en/products/cyber-protect/) [![Image 2: Acronis Editorial Team](https://staticfiles.acronis.com/images/content/d85707ae91461544212d39836dc32b42.png)](https://www.acronis.com/en/blog/authors/acronis/ "Acronis Editorial Team") [Acronis Editorial Team](https://www.acronis.com/en/blog/authors/acronis/) 3 min read Last updated 16 April 2018 ![Image 3: Acronis Notary Certificate](https://staticfiles.acronis.com/images/content/c06882b7c6b4daba1158828bae87cbbc.png) Acronis Notary Certificate At the start of the “Borrow or Rob” episode from the popular show “Blindspot” screened by NBC, a group of students break into a university server to change their grades. They do it by hacking the **backup**, and then destroying the primary server: _— “Are you seeing this? There is a boot logger. They’re gonna know we were here.” — “That’s why I am changing the grades on the **backup server**.” — “And that helps us how?” —“Once I zero out the local drives, **they’ll have no choice but to restore them from the backups**. Yada, yada, yada, new grades in place. No sign we were here. You’re welcome”_ In fact, as many companies manage costs by tiering their security measures, backups often end up being less protected than the primary infrastructure. This makes backups a potential backdoor for hackers. Fortunately, Acronis has the answer – [Acronis Notary](https://notary.acronis.com/)™, which creates digital certificates, based on checksums of your files, and then stores these certificates in the blockchain database, Ethereum, to ensure they can never be modified. This means that you can certify what you have backed up, and verify if you are restoring the same file. Here’s how it works: ## 1. Notarize Your Backups ![Image 4: Acronis Notary 1](https://staticfiles.acronis.com/images/content/ef243fb2c3d27427a268e44744066e99.png) Acronis Notary 1 During a backup, the agent calculates the hash codes of the backed-up files, builds a hash tree (based on the folder structure), saves the tree in the backup, and then sends the hash tree root to the Ethereum blockchain database to ensure that these values do not change. ## 2. Verify Your Files Simply browse your backup, locate a file you would like to check and click verify on the right. ![Image 5: Acronis Notary 2](https://staticfiles.acronis.com/images/content/f7ee41723cff48a0241aba81271f0549.png) Acronis Notary 2 If the file is authentic and unchanged since the backup, you will see this: ![Image 6: Acronis Notary 3](https://staticfiles.acronis.com/images/content/0e7991041d9aa51612cd05b036a6b8d4.png) Acronis Notary 3 You can even get a certificate, that you can print out or send, that proves that what you recover is what you have backed up: ![Image 7: Acronis Notary 4](https://staticfiles.acronis.com/images/content/5897cab5cd0e70f29612effdc84a41cd.png) Acronis Notary 4 That’s it! This is how you can prove that there were no malicious modifications of your backed up data while it was stored. No more backdoors, no more phony grades for student-hackers. Would you like to experience this amazing functionality yourself? Try [Acronis Backup 12.5](https://www.acronis.com/en-us/business/backup/) now and never look back! [Cybersecurity](https://www.acronis.com/en/blog/tags/cybersecurity/) [Cyber protection](https://www.acronis.com/en/blog/tags/cyber-protection/) ## Written by ![Image 8: Acronis Editorial Team](https://staticfiles.acronis.com/images/content/d85707ae91461544212d39836dc32b42.png) Acronis Editorial Team Acronis is a global cyber protection company that provides natively integrated cybersecurity, data protection, and endpoint management for managed service providers (MSPs), small and medium businesses (SMBs), and enterprise IT departments. [Previous post](https://www.acronis.com/en/blog/posts/weekly-tech-roundup-june-12/) [Weekly Tech Roundup — June 12](https://www.acronis.com/en/blog/posts/weekly-tech-roundup-june-12/) [Next post](https://www.acronis.com/en/blog/posts/general-data-protection-regulation-explained/) [General Data Protection Regulation Explained](https://www.acronis.com/en/blog/posts/general-data-protection-regulation-explained/) About Acronis Acronis is a leader in AI-native cyber protection, unifying data protection, cybersecurity, IT operations and hybrid infrastructure to deliver business continuity, security and compliance with less cost and complexity. More than 21,000 service providers trust Acronis to protect over 750,000 businesses in 150 countries. Acronis is headquartered in Schaffhausen, Switzerland. [Add as a preferred source on Google](https://google.com/preferences/source?q=acronis.com) ## Related stories Want to learn more? Read the latest stories featuring this solution on our blog. [Acronis Blog](https://www.acronis.com/en/blog/) ![Image 9: stc Bahrain and Acronis partner to bring advanced endpoint security to businesses in Bahrain](https://staticfiles.acronis.com/images/blog-card/9600f3eea83b8f4e168ea6c1409c8c26.png) [stc Bahrain and Acronis partner to bring advanced endpoint security to businesses in Bahrain](https://www.acronis.com/en/blog/posts/stc-bahrain-and-acronis-partner-to-bring-endpoint-security-to-businesses/) We are proud to announce a strategic partnership with stc Bahrain, expanding access to advanced cybersecurity services for businesses across Bahrain. **October 26, 2026**3 min read ![Image 10: Introducing New Acronis CEO: Prakash Panjwani](https://staticfiles.acronis.com/images/blog-card/30cb571f6f1aaa131733e5727a4a250c.png) [Introducing New Acronis CEO: Prakash Panjwani](https://www.acronis.com/en/blog/posts/introducing-new-acronis-ceo-prakash-panjwani/) We are pleased to announce the appointment of our new Chief Executive Officer, Prakash Panjwani. A veteran cybersecurity CEO, Panjwani previously served as CEO of WatchGuard Technologies and SafeNet. **October 15, 2026**2 min read ![Image 11: Acronis expands MDR toward broader workspace protection](https://staticfiles.acronis.com/images/blog-card/18e90e89f5ec4ef0901f19008d4ccbf2.png) [Acronis expands MDR toward broader workspace protection](https://www.acronis.com/en/blog/posts/acronis-expands-mdr-toward-broader-workspace-protection/) Acronis is expanding the MDR service with capabilities that make this expertise easier to deliver and help partners address more risks. The developments build on a broader commitment to managed security: helping service providers protect the connected workspace while giving customers access to the expertise needed to investigate threats, respond effectively and maintain business continuity. **October 13, 2026**6 min read