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# EIP-4844 devnet-4 Spec
### CL: Use [`v1.3.0-rc.1`](https://github.com/ethereum/consensus-specs/releases/tag/v1.3.0-rc.1), including:
* gwei for withdrawal amounts for engine api
* historical summaries
* genesis fork version for bls changes
### EL: build on top of [Shanghai](https://github.com/ethereum/execution-specs/blob/master/network-upgrades/mainnet-upgrades/shanghai.md), including:
* [EIP-6122 : Forkid checks based on timestamps](https://github.com/ethereum/EIPs/pull/6122)
* [**EIP-4895 update**: CL-EL withdrawals harmonization: using units of Gwei](https://github.com/ethereum/EIPs/commit/b56a299fbad4ee701e6d4cea025096effaf301fa)
* [**EIP-4844 update**: clarify datahash return value](https://github.com/ethereum/EIPs/commit/739e75c93b94fc49e8005943d052fa4e1ac1be80)
### Engine API @ [Commit `59a369a`](https://github.com/ethereum/execution-apis/tree/59a369a7b9d9c05e37c53aacac7ac6ea23fc62f6), including:
* [make engine_getPayloadVN fork agnostic](https://github.com/ethereum/execution-apis/pull/355)
* [CL-EL withdrawals harmonization: using units of Gwei](https://github.com/ethereum/execution-apis/pull/354)