Secure Your Tweets with Xmark

Automatically protect your X/Twitter posts. Xmark records your content on the secure Bitmark blockchain and shares it on the decentralized Nostr network, giving you true ownership and peace of mind.

What Xmark Does For You

Prove Your Ownership

Xmark creates a permanent, verifiable record of your X/Twitter posts on the Bitmark blockchain. This means you can always prove you're the original author of your content.

Protect From Censorship

Once recorded on the blockchain, your content's existence is secured against deletion or alteration. Your voice remains, even if it's removed from other platforms.

Easy Content Backup

All your X/Twitter posts, including images and videos, are securely saved. You can easily download your entire archive anytime with a unique code.

Share on Nostr

Amplify your reach! Xmark automatically shares your posts with the growing, decentralized Nostr network, connecting you with a wider, censorship-resistant audience.

Runs Silently

Install the Xmark browser extension, and it works quietly in the background. It won't interrupt your Browse, ensuring a smooth experience while it protects your content.

Discoverable Content

Through Linkmark, which defines the marking protocol, your blockchain-recorded content can be searched by keywords or hashes, making it easy to find.

How It Works

Simply install the Xmark browser extension. When you post on X/Twitter, Xmark automatically goes to work:

  1. Your post (text, images, videos) is securely sent to our servers for backup.
  2. A digital "fingerprint" (hash) of your content is created.
  3. This fingerprint is registered on the Bitmark blockchain, creating an unchangeable proof of your content at that specific time. You can view this on a Bitmark block explorer.
  4. Your post is also shared with the Nostr network for wider, decentralized visibility.

Ready to Take Control of Your Content?

Get the free Xmark browser extension today!

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