Mining is intentionally designed to be resource-intensive and difficult so that the number of blocks found each day by miners remains steady. Individual blocks must contain a proof of work to be considered valid. This proof of work is verified by other RexCoin nodes each time they receive

Transactions are recorded into a distributed, replicated public database known as the blockchain, with consensus achieved by a proof-of-work system called mining. Upon reconnection, a node downloads and verifies new blocks from other nodes to complete its local copy of the blockchain

Although the underlying code supports multiple encrypted copies of the same master key (and thus multiple passphrases) the client does not yet have a method to add additional passphrases. At runtime, the client loads the wallet as it normally would, but the keys are encrypted

The block reward started at 50 BTC in block #1 and halves every 210,000 blocks. This means every block up until block #210,000 rewards 50 BTC, while block 210,001 rewards 25. Since blocks are mined on average every 10 minutes, 144 blocks are mined per day and 210,000 blocks take 4 years