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Cryptomator VS BlockchainSign

Compare Cryptomator VS BlockchainSign and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

Cryptomator logo Cryptomator

When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.

BlockchainSign logo BlockchainSign

Timestamp any document on Ethereum and get a certificate anyone can verify. The file is hashed in your browser and never uploaded โ€” only the SHA-256 hash is recorded. No subscription and no crypto wallet.
  • Cryptomator Landing page
    Landing page //
    2023-09-12
  • BlockchainSign Free SHA-256 hash tool โ€” hashed in the browser, never uploaded
    Free SHA-256 hash tool โ€” hashed in the browser, never uploaded //
    2026-08-14
  • BlockchainSign Prove your document creation without handing it to anyone
    Prove your document creation without handing it to anyone //
    2026-08-14
  • BlockchainSign Pricing โ€” buy certificates as credits, no subscription
    Pricing โ€” buy certificates as credits, no subscription //
    2026-08-14

BlockchainSign is a blockchain timestamping service for people holding documents they cannot hand over.

Conventional options all require custody: a copyright office wants a deposit copy, a notary wants to see the paper, an e-signature platform wants the file on its servers. BlockchainSign never receives the file at all. The document is hashed with SHA-256 in the user's own browser using the Web Crypto API, and only the resulting hash is written to the Ethereum blockchain.

The result is a certificate file recording the hash, the transaction and the timestamp. Because each certificate is its own Ethereum L1 transaction, with the payload hash readable as UTF-8 on a public block explorer, verification does not run through the vendor's portal: if BlockchainSign shut down, existing certificates would still verify.

There is no subscription and no cryptocurrency wallet involved. Certificates are bought as credits with a card and spent when needed. Credits are valid for 12 months; an issued certificate never expires.

Key points

  • The file is never uploaded โ€” only its SHA-256 hash is transmitted
  • Recorded on Ethereum L1, one transaction per certificate
  • Verifiable on a public block explorer, independently of us
  • No subscription, no renewal, no wallet, no crypto knowledge needed
  • A free SHA-256 file hash generator is available with no account
  • Available in English, French, German, Spanish and Portuguese

What it does not do. A timestamp proves that a file existed in that exact form at that time โ€” existence and integrity. It does not prove authorship or ownership, and it is not a substitute for copyright registration. There is no API or integrations yet, and no eIDAS qualified timestamp.

Cryptomator

Website
cryptomator.org
Pricing URL
-
$ Details
Startup details
Country
Germany
Edit details

BlockchainSign

Website
blockchainsign.io
Pricing URL
Official BlockchainSign Pricing
$ Details
paid $9.99 / One-off (1 certificate; 10 for $49.99, 100 for $299.99)
Edit details

Cryptomator features and specs

  • Open Source
    Cryptomator is open source, meaning its source code is available for review and audit by the community, ensuring transparency and trustworthiness.
  • User-Friendly
    The application has an intuitive and easy-to-use interface, making it accessible for users with varying levels of technical skill.
  • Encryption Standard
    Cryptomator uses AES (Advanced Encryption Standard) with 256-bit key length to secure your data, providing robust protection against unauthorized access.
  • Cross-Platform
    It supports multiple operating systems, including Windows, macOS, Linux, iOS, and Android, allowing for seamless synchronization across devices.
  • No Account Required
    Users do not need to create an account to use Cryptomator, enhancing user privacy and data protection.
  • Integration with Cloud Services
    Cryptomator can integrate with various cloud storage solutions like Google Drive, Dropbox, and OneDrive, providing an extra layer of security for your cloud-stored files.

Possible disadvantages of Cryptomator

  • Performance Limitations
    Because files are encrypted and decrypted on-the-fly, the application may experience slower performance, especially for large files or folders.
  • Mobile App Cost
    While the desktop version is free, the mobile apps require a one-time purchase, which might deter some users.
  • No Native Cloud Backup
    Cryptomator itself does not offer native cloud backup services. Users must rely on third-party cloud providers for storing encrypted files.
  • No Live Collaboration Features
    The application does not support live collaboration on encrypted documents, limiting its utility for team-based projects.
  • Compatibility Issues
    Certain cloud providers may occasionally change their APIs or policies, potentially causing compatibility issues until updates are made.

BlockchainSign features and specs

  • Blockchain-Based Security
    Utilizes blockchain technology to timestamp and verify document signatures, creating an immutable record that can enhance trust and reduce the risk of tampering or fraud.
  • Decentralized Verification
    Signature verification does not rely on a single centralized authority, which can increase transparency and allow independent verification of document authenticity.
  • Cost-Effective for Digital Signing
    Blockchain-based signing solutions like this often provide competitive pricing compared to traditional e-signature platforms, especially for high-volume users.
  • Tamper-Evident Records
    Once a document is signed and recorded on the blockchain, any attempt to alter it becomes detectable, providing strong evidence of document integrity over time.
  • Global Accessibility
    As a web-based platform, it can be accessed from anywhere with an internet connection, making it convenient for international business transactions and remote signing needs.

Analysis of Cryptomator

Overall verdict

  • Cryptomator is a highly recommended tool for individuals seeking a secure and private method of encrypting files before uploading them to cloud storage. It strikes a balance between security and usability, making it appealing for both technical and non-technical users.

Why this product is good

  • Cryptomator is considered good because it provides client-side encryption, ensuring that only you have access to your files. It is open-source, which means its code is transparent and has been reviewed by the community, enhancing its security credibility. It's also user-friendly, allowing seamless integration with cloud storage providers and offering a zero-knowledge architecture, which means even their developers cannot access your data.

Recommended for

  • Individuals concerned about privacy and security of their data in the cloud.
  • Users looking for an open-source, community-reviewed encryption tool.
  • People who need a user-friendly encryption solution that works with various cloud storage services.
  • Those who prefer a service with a zero-knowledge policy, ensuring complete data confidentiality.

Cryptomator videos

+ Add

Cryptomator Tutorial: Get Started

More videos:

  • Tutorial - How To Easily Encrypt Anything - Cryptomator The Best FREE Encryption Software! (multiplatform)
  • Review - Cryptomator and Nextcloud

BlockchainSign videos

No BlockchainSign videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Cryptomator and BlockchainSign)

Cryptomator

BlockchainSign

Cloud Storage
100 100%
Cloud Storage
0% 0
Blockchain
0 0%
Blockchain
100% 100
File Sharing
100 100%
File Sharing
0% 0
Security & Privacy
98 98%
Security & Privacy
2% 2

User comments

Share your experience with using Cryptomator and BlockchainSign. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare Cryptomator and BlockchainSign

Cryptomator Reviews

6 TrueCrypt Alternatives for Reliable Data Encryption
Cryptomator is a great free encryption software tool for users looking to encrypt individual files rather than a large volume of data as seen with TrueCrypt or other alternatives mentioned here. This makes sense if you update only a few files regularly and the rest of your files remain relatively unchanged. Cryptomator is supported on Windows, Mac, and Linux operating...
Source: technologyadvice.com
15 Best Rclone Alternatives 2022
With Cryptomator, what you get is a simple digital protection tool. Rclone syncs your files to cloud storage, while Cryptomator syncs and locks your files to cloud storage. Cryptomator gives you access to your files on any device and only you hold the keys to access them.
Source: rigorousthemes.com
5 Best TrueCrypt Alternatives - Open source encryption apps
Cryptomator for the desktop works on a pay what you want model. It can be had for free, but users are encouraged to donate towards its development. The mobile apps (which support fingerprint unlock) cost $8.99 at time of writing.
Source: proprivacy.com
16 Tresorit Alternatives
Cryptomator will be giving you the full permission in which you can choose to encrypt the whole of your data on your series of workstations or top of any cloud devices or any storage media. It will be working all through the creation of the virtual device right through which the encrypted content can be readily displayed.
Source: www.topbestalternatives.com

BlockchainSign Reviews

We have no reviews of BlockchainSign yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Cryptomator seems to be more popular. It has been mentiond 303 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Cryptomator mentions (303)

  • Show HN: Stop paying for Dropbox/Google Drive, use your own S3 bucket instead
    > I dislike Dropbox for reasons that aren't technical, but the big thing for me is that I want either E2EE, or control/ownership of where my data is stored. You could run something like Cryptomator on top of Dropbox: https://cryptomator.org/ It even has (paid) iOS and Android apps for mobile access. - Source: Hacker News / 5 months ago
  • Show HN: An encrypted, local, cross-platform journaling app
    This is Nice. However, how do one access their diary, when you stopped maintaining it? Is this targeted more at the technically inclined, high-profile people who need to keep secrets? Personally, I believe that for something like a diary/journal, it should be in a format easily readable by most tools (so a Plain-Text or a MarkDown at best), then it is in a container/folder. Now, encrypt that container/folder... - Source: Hacker News / 6 months ago
  • Time to Start De-Appling
    If you still want/need cloud storage, but don't want to roll your own (with the warts that brings), Cryptomator is an excellent tool for source encrypting your data before uploading them. It works transparently, and has clients for Mac/Windows as well as iOS/Android. It's also open source, and "free" (IIRC there's a one time fee for the mobile client). https://cryptomator.org/. - Source: Hacker News / 10 months ago
  • Twake Drive โ€“ The open-source alternative to Google Drive
    - Syncthing (https://syncthing.net/) to keep the files synchronized between desktops and laptops computers - Webdav (https://github.com/hacdias/webdav) to access the files on the server via other applications - Cryptomator (https://cryptomator.org/) to crypt/decrypt sensible directories. - Source: Hacker News / 10 months ago
  • Over engineering my homelab so I don't pay cloud providers
    While I get the whole homelab thing is exiting and a great learning experience, it's simply not worth the time and effort for the majority of people. You will end up paying much more for your services, along with spending a ton of time maintaining it (and if you don't, you will probably find yourself on the end of a 0-day hack sometime). In Northern/Western Europe, where power costs around โ‚ฌ0.3/kWh on average,... - Source: Hacker News / about 1 year ago
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BlockchainSign mentions (0)

We have not tracked any mentions of BlockchainSign yet. Tracking of BlockchainSign recommendations started around Aug 2026.

What are some alternatives?

When comparing Cryptomator and BlockchainSign, you can also consider the following products

BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.

OriginStamp - Blockchain-based, tamper-proof timestamping. Data Integrity as a Service.

Mega - Secure File Storage and collaboration

ScoreDetect - ScoreDetect is an innovative platform that serves as a permanence layer for data provenance, enabling systems and authorities to independently verify data authenticity.

Nextcloud - With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.

Woleet - Blockchain timestamping and certification Software as a Service , SaaS.

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