Great, glad to hear your deposit has arrived! 'Mining' is the process of using computer/graphic/microchip power to solve complex mathematical algorithms in order to produce a new 'block' and add it to the blockchain. This block contains a record of all Bitcoin transactions that have occurred since the last block was added, and so on so forth. Each time a new block is added to the blockchain, the transaction that occurred in the previous block gets another confirmation. The more confirmations a block has, the harder it is to theoretically undo it. It's like building a wall block by block from the ground up - the more blocks you add to the wall, the harder it is to get at or move the blocks lower down. With enough computer processing power, an entity could theoretically reverse the transactions that occurred previously in the blockchain. However, it takes significantly more power to do this the more confirmations (or blocks on top of it) that the transaction has, hence the increasing number of confirmations for each transaction as blocks are added! Generally speaking, a transfer is considered fully confirmed by most people once it has reached 3 confirmations. This may increase to 6 confirmations due to the huge amount of processing power that is going to be released into the mining system in the coming months to safeguard against the possibility of a single group temporarily amassing enough processing power to cause a 'fork' in the blockchain. You'll have to read more about that over on the Bitcoin Wiki though, I'm afraid! As for this: Cracked up! Libertas EDIT: Locked as resolved.