> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
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# How is the Bitcoin blockchain used in the Smart Certificate platform ?

Only the HASH is stored in the blockchain, as a (timestamping) proof for the issued document; all the documents are saved on our private dedicated servers. 
The Hash proof is accessible (1) on the recipients’ profile , (2) on the (public) digital secured version of the Smart Certificate (shared by the recipients only).