Meta-block proposal should validate kernel

[0xsarvesh]

User Story

As a core contract
I want to validate the kernel of a block proposal
Because I want to reject proposals for invalid kernels.

Scenario

Given that I have a valid kernel
When I propose the meta-block
Then the core contract should accept it.

Given that I have an invalid kernel
When I propose the meta-block
Then the core contract should reject it
And revert the transaction.

Info

Validation should be added to check for the validity of a kernel when a new meta-block is proposed.
The wrong kernel is also an invalid kernel. Proposals must be made for the currently open kernel.

The transition object has a kernel hash. That one must be the hash of the currently open kernel.

⚠️ The method MetaBlock.hashKernel() is just a placeholder and not yet implemented!

Contracts:

• OriginCore

[schemar]

Baby mosaic has a static set of validators. In worst case, use a zero validator delta in the kernel object.