Transactions (Tx)

• Cryptography also helps one more puzzle – authenticity.

• To be part of the bitcoin network all you need is access to internet. Every user in the network is identified by a string of characters, known as the bitcoin address.

• To transact with someone in bitcoins you need to know their bitcoin address (i.e. email).

• Your bitcoin address is derived from a public key which is derived from a private key. Private key should be kept secret like your password to an email