Nikolay Atanasow

### Problem Currently, there are `addBytes` and `addBytes32` but the `addBytes4` method is missing. It's needed sometimes when we want to add only a function selector for an internal call...

### Problem Currently, there is no natural way to override a relay's env if it's been added recently and not manually exposed in the local node as a config variable....

docs: add README for `upgrade-testing.yml` workflow

1

**Description**: There are no examples of how devs should be able to use this workflow and what use cases could be covered. **Solution**: - rename `upgrate-testing.yml` to `migration-testing.yml` and follow...

### Problem There are no examples of how devs should be able to use this workflow and what use cases could be covered. ### Solution - rename `upgrate-testing.yml` to `migration-testing.yml`...

feat: calculate `logsBloom` for synthetic transactions

4

**Description**: Currently with our synthetic transactions, which are constructed on the fly using events from the operations, we don't return adequate and real logsBloom. This might be a problem for...

feat: calculate actual `receiptsRoot` when possible

4

**Description**: Currently, when we return block information, we don't include actual receiptsRoot, this is because Hedera is not using Merkle Patricia trie. However, this can be easily calculated during the...

Sort out how to delete an account with a completely off-chain and offline signature

1

### Problem Currently, we have an account that we want to delete but the AccountDeleteTransaction signing must be completely offchain. The following execution must be with another account and in...

Make `HederaResponseCodes.sol` up-to-date with the latest protobufs ones

1

### Problem There are missing response codes in [HederaResponseCodes.sol](https://github.com/hashgraph/hedera-smart-contracts/blob/main/contracts/precompile/HederaResponseCodes.sol). ### Solution Update the [HederaResponseCodes.sol](https://github.com/hashgraph/hedera-smart-contracts/blob/main/contracts/precompile/HederaResponseCodes.sol) contract with the protobufs ones defined [here](https://github.com/hashgraph/hedera-protobufs/blob/main/services/response_code.proto). ### Alternatives _No response_

feat: add `eth_call`, `eth_getLogs` and `eth_estimateGas` coverage to conformity tests

4

**Description**: Add eth_call, eth_getLogs and eth_estimateGas test to conformity tests: - [x] eth_call - non existing contract - [x] eth_call - existing contract view function and existing from - [x]...

feat: capture env variables into sigleton and reusable constants

5

**Description**: Currently, we are dynamically getting the environment variables and parsing/casting them every time. This is inefficient and also, more importantly, allows env configurations to be dynamically changed, which can...