Whitechain launched as an EVM-compatible Layer 1 blockchain built on go-ethereum, secured by Proof of Authority consensus operated by WhiteBIT. At blockDocumentation Index
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{{MIGRATION_BLOCK}} on {{L2_LAUNCH_DATE}}, Whitechain completed its migration to a Layer 2 network built on the OP Stack, settling on Ethereum via blob data availability.
The full Whitechain L1 chain state (all accounts, balances, and smart contract storage) was migrated to L2. No user action was required.
Why Whitechain moved to L2
Modular architecture. The OP Stack separates execution, data availability, and settlement into distinct layers. This reduces upgrade complexity and lays the foundation for future performance and scalability improvements. Ethereum-anchored data. Chain data is now published and settled on Ethereum, giving Whitechain stronger security and data-durability guarantees than a standalone L1. Decentralization roadmap. OP Stack is the infrastructure behind Base, Optimism, and the broader Superchain ecosystem. Building on it positions Whitechain within a shared ecosystem of tooling and standards, with a clear path toward decentralized sequencing. Consensus transition. Moving away from a single-validator PoA model reduces centralization and aligns Whitechain with modern L2 architecture used across the industry.Technical changes
| Aspect | Layer 1 | Layer 2 |
|---|---|---|
| Architecture | Single service: execution, consensus, and data availability combined | OP Stack: separate execution, data availability (Ethereum blobs), and settlement layers |
| Consensus | Proof of Authority (Clique, EIP-225), operated by WhiteBIT | OP Stack sequencer, initially operated by WhiteBIT |
| Sequencing | Determined by PoA validator consensus | Centralized sequencer initially; decentralized sequencing planned |
| Chain ID | 1875 | {{L2_CHAIN_ID}} |
| Testnet chain ID | 2625 | 1874 |
| Block time | 2s | 1s (Flashblocks: 100–200 ms) |
| Gas model | Fixed 10 gwei, paid in WBT | EIP-1559 with OP Stack parameters, paid in WBT |
| Finality | Single-block finality once a block is produced | Depends on sequencer, batcher, and proposer trust; ultimately finalized on Ethereum |
| Bridging | Third-party bridge between Ethereum and Whitechain | Native OP bridge to Ethereum alongside existing third-party bridges |
| Validator duties | Operated PoA consensus and block production | Temporarily operate community RPC nodes |
| Validator rewards | Distributed as PoA block rewards | Distributed periodically via smart contract |
| New block fields | None | withdrawals, withdrawalsRoot, blobGasUsed, excessBlobGas, parentBeaconBlockRoot |
| RPC endpoint | https://rpc.whitechain.io | {{L2_RPC_URL}} |
| Block explorer | https://explorer.whitechain.io | {{L2_EXPLORER_URL}} |
L1 status
After the migration at block{{MIGRATION_BLOCK}}, the Whitechain L1 entered read-only mode. It remains accessible for querying historical data, but no longer accepts new transactions.