Added ownership reference + wallet creation methods

api/pkg/model/chains.go

@@ -0,0 +1,11 @@
+package model
+
+type ChainNetwork string
+
+const (
+	ChainNetworkARB         ChainNetwork = "arbitrum_one"
+	ChainNetworkEthMain     ChainNetwork = "ethereum_mainnet"
+	ChainNetworkTronMain    ChainNetwork = "tron_mainnet"
+	ChainNetworkTronNile    ChainNetwork = "tron_nile"
+	ChainNetworkUnspecified ChainNetwork = "unspecified"
+)