Rootstock (RSK) RSK is a Bitcoin sidechain with EVM compatibility , secured by merge mining + a federation peg. Launched 2018 by IOV Labs / RSK Labs. Architecture - Federation : Powpeg n-of-m multisig holds bridged BTC. - Merge mining : Bitcoin miners can simultaneously mine RSK blocks for additional reward (no extra hashpower needed). - EVM : full Solidity smart contract support. - 30-second blocks (vs Bitcoin's 10 min). - Native token : RBTC = 1:1 BTC-pegged. Peg architecture (Powpeg) Federation members hold: - Bitcoin multisig keys. - HSM (Hardware Security Module) attestation hardware. -…