diff --git a/mainnet/gentx/mcb.json b/mainnet/gentx/mcb.json
new file mode 100644
index 0000000..8df4d6a
--- /dev/null
+++ b/mainnet/gentx/mcb.json
@@ -0,0 +1 @@
+{"body":{"messages":[{"@type":"/cosmos.staking.v1beta1.MsgCreateValidator","description":{"moniker":"mcb","identity":"","website":"","security_contact":"","details":""},"commission":{"rate":"0.200000000000000000","max_rate":"1.000000000000000000","max_change_rate":"1.000000000000000000"},"min_self_delegation":"1","delegator_address":"cre1gcmgvenfkccja3dc7dh3qk36mp6paghqwu97qy","validator_address":"crevaloper1gcmgvenfkccja3dc7dh3qk36mp6paghqvg93dw","pubkey":{"@type":"/cosmos.crypto.ed25519.PubKey","key":"ZyYy8CHZhUDqwXauTBsnWTWDztIrS+ILVVUWPD/PvpQ="},"value":{"denom":"ucre","amount":"1000000"}}],"memo":"5281a56e53972811f2fc23033827cc70acf654ae@167.179.67.180:26656","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[{"public_key":{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"Azs25T98IdYXaM6kyjVo7R5x1GCbNvK3XE61EaPv+ntM"},"mode_info":{"single":{"mode":"SIGN_MODE_DIRECT"}},"sequence":"0"}],"fee":{"amount":[],"gas_limit":"200000","payer":"","granter":""}},"signatures":["7NageQBTwCDrxMcDDBNywKw6Gzw5RdjStBYolnyLc4wBTpf1kZMD+EHIKhAnxsdr2BBYMnqoz/rhmIN94gAvTA=="]}