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Automatically merged updates to draft EIP(s) 2930 (#3088)

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Hi, I'm a bot! This change was automatically merged because:

 - It only modifies existing Draft or Last Call EIP(s)
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lightclient 2020-11-06 01:11:54 -07:00 committed by GitHub
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EIPS/eip-2930.md
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@ -16,7 +16,7 @@ Adds a transaction type which contains an access list, a list of addresses and s
## Abstract
We introduce a new [EIP-2718](./eip-2718.md) transaction type, with the format `rlp([3, [nonce, gasPrice, gasLimit, to, value, data, access_list, senderV, senderR, senderS]])`.
We introduce a new [EIP-2718](./eip-2718.md) transaction type, with the format `rlp([1, [chainId, nonce, gasPrice, gasLimit, to, value, data, access_list, senderV, senderR, senderS]])`.
The `access_list` specifies a list of addresses and storage keys; these addresses and storage keys are added into the `accessed_addresses` and `accessed_storage_keys` global sets (introduced in [EIP-2929](./eip-2929.md)). A gas cost is charged, though at a discount relative to the cost of accessing outside the list.
@ -37,7 +37,7 @@ This EIP serves two functions:
| `ACCESS_LIST_STORAGE_KEY_COST` | 1900 |
| `ACCESS_LIST_ADDRESS_COST` | 2400 |
As of `FORK_BLOCK_NUMBER`, we introduce a new transaction type, with the format `rlp([3, [nonce, gasPrice, gasLimit, to, value, data, access_list, senderV, senderR, senderS]])`. The signing hash would be the hash of the RLP of the entire data structure but popping the last three items representing the signature from the inner list: `rlp([3, [nonce, gasPrice, gasLimit, to, value, data, access_list]])`.
As of `FORK_BLOCK_NUMBER`, we introduce a new transaction type, with the format `rlp([1, [chainId, nonce, gasPrice, gasLimit, to, value, data, access_list, senderV, senderR, senderS]])`. The signing hash would be the hash of the RLP of the entire data structure but popping the last three items representing the signature from the inner list: `rlp([1, [chainId, nonce, gasPrice, gasLimit, to, value, data, access_list]])`. `chainId` is defined to be an integer of arbitrary size. Since `chainId` no longer resides in the signature, `v` must be either 0 or 1 depending on recovery id.
For the transaction to be valid, `access_list` must be of type `[[{20 bytes}, [{32 bytes}...]]...]`, where `...` means "zero or more of the thing to the left". For example, the following is a valid access list (all hex strings would in reality be in byte representation):
@ -91,6 +91,8 @@ def process_access_list(access_list) -> Tuple[List[Set[Address], Set[Pair[Addres
The access list is NOT charged per-byte fees like tx data is; the per-item costs described above are meant to cover the bandwidth costs of the access list data in addition to the costs of accessing those accounts and storage keys when evaluating the transaction.
Clarification: the transaction is valid only if `chainId` is equal to the chain id of the current network.
## Rationale
### Charging less for accesses in the access list