update the proposal to restrict top level accounts

neps/nep-0492.md

@@ -12,7 +12,7 @@ LastUpdated: 2023-07-27
 
 ## Summary
 
-This proposal aims to restrict the creation of Ethereum addresses on NEAR to both prevent loss of funds due to careless user behaviors and scams
+This proposal aims to restrict the creation of top level accounts (other than implicit accounts) on NEAR to both prevent loss of funds due to careless user behaviors and scams
 and create possibilities for future interopability solutions.
 
 ## Motivation
@@ -28,7 +28,7 @@ There are currently ~5000 Ethereum addresses already created on NEAR. It is also
 
 ## Specification
 
-The proposed change is quite simple. Only the protocol registrar account (which can create top-level accounts <= 32 bytes) can create Ethereum addresses.
+The proposed change is quite simple. Only the protocol registrar account can create top-level accounts that are not implicit accounts
 
 ## Reference Implementation
 
@@ -37,10 +37,10 @@ The implementation roughly looks as follows:
 ```Rust
 fn action_create_account(...) {
     ...
-    if account_id.is_ethereum_address()
+    if account_id.is_top_level() && !account_id.is_implicit()
                 && predecessor_id != &account_creation_config.registrar_account_id
             {
-                // An Ethereum address can only be created by the registrar account
+                // Top level accounts that are not implicit can only be created by registrar
                 result.result = Err(ActionErrorKind::CreateAccountOnlyByRegistrar {
                     account_id: account_id.clone(),
                     registrar_account_id: account_creation_config.registrar_account_id.clone(),
@@ -63,11 +63,11 @@ Ethereum wallets such as Metamask could potentially support NEAR transactions th
 
 ## Consequences
 
-In the short term, no Ethereum addresses would be allowed to be created, but this change would not create any problem for users.
+In the short term, no new top-level accounts would be allowed to be created, but this change would not create any problem for users.
 
 ### Backwards Compatibility
 
-There is no backwards compatibility concern.
+For Ethereum addresses specifically, there are ~5000 existing ones, but this proposal per se do not deal with existing accounts.
 
 ## Copyright