Do not export when not required

providers/bitcoin/address.go

@@ -5,7 +5,7 @@ import (
 	"net/url"
 )
 
-type Address struct {
+type addressData struct {
 	Address    string `json:"address"`
 	ChainStats struct {
 		FundedTxoCount int `json:"funded_txo_count"`
@@ -25,8 +25,8 @@ type Address struct {
 
 // GetAddress returns an Address struct populated with data from blockstream.info
 // for a given BTC address
-func (c *client) getAddress(address string) (*Address, error) {
-	addressResponse := &Address{}
+func (c *client) getAddress(address string) (*addressData, error) {
+	addressResponse := &addressData{}
 
 	err := c.get(fmt.Sprintf("address/%s", address), addressResponse, url.Values{})
 	if err != nil {