Whitechain shifts from standalone PoA L1 to OP Stack-based Ethereum L2, launches Sepolia testnet

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Whitechain has launched its Sepolia testnet (Chain ID 1874) as it migrates from a standalone PoA L1 to an Ethereum L2 built on the OP Stack, settling via Blob DA under EIP-4844 with EVM equivalence. The project cites 1-second soft confirmations, dynamic EIP-1559 gas denominated in WBT, and a protocol-secured canonical bridge. WBT holders require no action: supply stays fixed, tokenomics are preserved, and balances carry over at mainnet. Whitechain touts distribution via WhiteBIT's 5M+ users, plus a Builders Program offering up to $300K, audit subsidies, and liquidity support.

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Whitechain shifts from standalone PoA L1 to OP Stack-based Ethereum L2, launches Sepolia testnet

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