Calculate signature hash of the file from your computer right in your browser and publish it on blockchain.

The file never leaves your computer. Best for private documents, contracts, agreements. Click or drag and drop file here Filename: Filesize: bytes Hash: Descrtiption: Description is too big

Calculate signature hash of your hosted file online and publish it in blockchain.

Enter URL address into the form. File size is limited to 50MB (megabytes).

Best for public documents and other file types. URL: Descrtiption: Description is too big

Enter destination URL and short immutable link will be generated and engraved into blockchain. URL:

The text entered below will be stored with SHA256 hash in the blockchain and visible by short code for everyone. Text:

Only SHA256 hash of the text data entered below will be stored in the blockchain. Use this option to create proof of text you want to keep private. Data:

Encrypted text will be saved in the blockchain. The only people that will be able to view it are those you give your password to. Text: Password: Repeat Password: