RequiredBlockState declarations on api

ethclient/gethclient/gethclient.go

@@ -125,6 +125,15 @@ func (ec *Client) GetProof(ctx context.Context, account common.Address, keys []s
 	return &result, err
 }
 
+type RequiredBlockState struct {
+}
+
+// GetRequiredBlockState returns all state required to execute a single historical block.
+func (ec *Client) GetRequiredBlockState(ctx context.Context, blockNumber *big.Int) (*RequiredBlockState, error) {
+	result := RequiredBlockState{}
+	return &result, nil
+}
+
 // CallContract executes a message call transaction, which is directly executed in the VM
 // of the node, but never mined into the blockchain.
 //

internal/ethapi/api.go

@@ -933,6 +933,18 @@ func (s *BlockChainAPI) GetBlockReceipts(ctx context.Context, blockNrOrHash rpc.
 	return result, nil
 }
 
+// GetRequiredBlockState returns all state required to execute a single historical block.
+func (s *BlockChainAPI) GetRequiredBlockState(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) ([]map[string]interface{}, error) {
+	block, err := s.b.BlockByNumberOrHash(ctx, blockNrOrHash)
+	if block == nil || err != nil {
+		// When the block doesn't exist, the RPC method should return JSON null
+		return nil, nil
+	}
+
+	result := make([]map[string]interface{}, 1)
+	return result, nil
+}
+
 // OverrideAccount indicates the overriding fields of account during the execution
 // of a message call.
 // Note, state and stateDiff can't be specified at the same time. If state is

internal/ethapi/api_test.go

@@ -1619,6 +1619,10 @@ func TestRPCGetBlockReceipts(t *testing.T) {
 	}
 }
 
+func TestRPCGetRequiredBlockState(t *testing.T) {
+	//
+}
+
 func testRPCResponseWithFile(t *testing.T, testid int, result interface{}, rpc string, file string) {
 	data, err := json.MarshalIndent(result, "", "  ")
 	if err != nil {