contracts: add L1BlockNumber predeploy

ethereum-optimism / optimistic-specs

Optimistic: Bedrock, is a protocol that strives to be an extremely simple optimistic rollup that maintains 1:1 compatibility with Ethereum

MIT License

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Closed smartcontracts closed 2 years ago

smartcontracts commented 2 years ago

Description Re-introduces the L1BlockNumber predeployed contract for backwards compatibility with the previous OVM_L1BlockNumber contract.