July 16, 2026 · 4 min read
Rootstock RPC: An EVM Chain Where Gas Is Bitcoin
Rootstock (RSK) is an EVM sidechain merge-mined by Bitcoin — chain ID 30, RBTC gas pegged 1:1 to BTC, ~30s blocks. viem and ethers connect in one line, but two things trip up Ethereum devs: gas is denominated in Bitcoin, and addresses use an EIP-1191 checksum that standard tooling gets 'wrong'. Here's the map.
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