RSK is the Smart Contract platform of Bitcoin. Its engine is a forked version of the EVM (Ethereum Virtual Machine), and the RVM (RSK Virtual Machine) is compatible with Ethereum Smart Contracts and the tools used to deploy and interact with them.
The Smart Bitcoin (RBTC) is the native currency in RSK and it is used to pay for the gas required for the execution of transactions. It is pegged 1:1 with Bitcoin, which means in RSK there are exactly 21M RBTC. A Powpeg allows the transfer of bitcoins from the Bitcoin blockchain to the RSK blockchain and vice-versa.
RSK has two networks, one is a development or testing network (also known as Testnet), and the other a production network (Mainnet), with blocks every 30 seconds.
To interact with the network, you need access to a node. The following are the available options: