Client: Kiln🔥🧱 Tracking Issue

[ryanio]

Kiln🔥🧱 – the last Merge sprint before launching pre-production testnets. Kiln aims to move client implementations into the production readiness stage.

Please note: EthereumJS does not aim to contend as a production mainnet client, but rather participating to ensure compatibility for downstream users of our libraries.

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Overview

This issue details the milestones for the Kiln🔥🧱 testnets starting in February 2022.

Kiln Spec: https://hackmd.io/@n0ble/kiln-spec

Execution Layer

Changes to Execution layer spec introduced in Kiln:

• Extend semantics of executePayload and forkchoiceUpdated methods #165
• Replace terminal block error with INVALID_TERMINAL_BLOCK status #170
• Refine message ordering. Take 2 #148
• Authentication for engine api #167, PR client: Jwt token based auth for engine api #1723
  • (pending change to the Engine API and will be added in a subsequent version of the Kiln specification)
• Add support for Optimistic Sync
  • (for reference, geth's implementation: beaconsync.go)

Milestones

• M0: Implementation started
• M1: Spec Implemented
• M2: 1-to-1 Interop – One EL and one CL team pair off for basic interop testing
• M3: Many-to-Many Interop – 2 or more EL and CL teams perform interop testing
• M5: All-to-All persistent testnet – All ready EL and CL teams create a long-lived devnet
• M6: Kiln🔥🧱 code released – All clients release Kiln🔥🧱 code for public consumption

PRs:

• v1: merge: kiln🔥🧱 updates #1712
• v2: merge: kiln v2 updates #1750