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Blockchain

Horizontales
A mechanism requiring enough people to agree which transactions are valid
Unscrambling a message to make it readable
A unique encrypted message used to verify the sender of a message.
When you continually generate new numbers to try and get a hash to start with a unique set of 0s. This is a puzzle that can only be solved by guessing
When different keys are used to encrypt and decrypt a message
A secret password for unlocking a message
a unique representation of an original message that has been transformed so it is unrecognizable.
Verticales
A key that is shared with everybody so anyone can encrypt a message
When the same key is used to encrypt and decrypt a message
A key that is kept private so only a specific person can decrypt a message
Scrambling or changing a message to hide the original text
A record of all transactions in a group
Verifying information with a lot of computing effort
A number used to try and change the hash of a block of messages so that it starts with a unique set of 0s. Its an abbreviation for Number used once