diff --git a/go.mod b/go.mod
index 7f25d11..77757fa 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,4 @@ module github.com/bitcoinschema/go-map
 
 go 1.15
 
-require (
-	github.com/bitcoinschema/go-bob v0.1.7
-	golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 // indirect
-)
+require github.com/bitcoinschema/go-bob v0.1.8
diff --git a/go.sum b/go.sum
index 8be6caa..767b91b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
-github.com/bitcoinschema/go-bitcoin v0.3.16 h1:2rcQJjH01aHfZ1J2IPaVvjSxFSb/egoGPs7mKvzzya8=
-github.com/bitcoinschema/go-bitcoin v0.3.16/go.mod h1:dMrwTCmXoSd3RVpsZJe7MJLAw1D8qJSmZb9gjZRUQ7M=
-github.com/bitcoinschema/go-bob v0.1.7 h1:339LPm9dduSVaLkVcxP01DygKZF0fv6WwFrCyiUhL7Y=
-github.com/bitcoinschema/go-bob v0.1.7/go.mod h1:KIeljwV4wfBDzorvMEcp0EsGpoRhw6hhhu3B/Y5AM5M=
+github.com/bitcoinschema/go-bitcoin v0.3.18 h1:yZUm+Qen29bcyREdCIdb4I2Mj/zsJRvDZPex95VwHlo=
+github.com/bitcoinschema/go-bitcoin v0.3.18/go.mod h1:qugS0wUE6RKcO05lKnmSyfSwhDbuhztgh3i3UetadDs=
+github.com/bitcoinschema/go-bob v0.1.8 h1:6MxvZ9jGmWtiCvRJUMLftj61+DT1pdEwl8WM1G4nG2k=
+github.com/bitcoinschema/go-bob v0.1.8/go.mod h1:BtOxC6wrypkONMFVOAiHqS2myM0qkVHx8XQhEEdwfJI=
 github.com/bitcoinsv/bsvd v0.0.0-20190609155523-4c29707f7173 h1:2yTIV9u7H0BhRDGXH5xrAwAz7XibWJtX2dNezMeNsUo=
 github.com/bitcoinsv/bsvd v0.0.0-20190609155523-4c29707f7173/go.mod h1:BZ1UcC9+tmcDEcdVXgpt13hMczwJxWzpAn68wNs7zRA=
 github.com/bitcoinsv/bsvlog v0.0.0-20181216181007-cb81b076bf2e h1:6f+gRvaPE/4h0g39dqTNPr9/P4mikw0aB+dhiExaWN8=
@@ -11,8 +11,8 @@ github.com/bitcoinsv/bsvutil v0.0.0-20181216182056-1d77cf353ea9/go.mod h1:p44KuN
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/libsv/go-bt v0.0.11 h1:+FXtw4hC83Kg6VEdNAqD0Pk5scwjYAzsiScHWMarcls=
-github.com/libsv/go-bt v0.0.11/go.mod h1:AfXoLFYEbY/TvCq/84xTce2xGjPUuC5imokHmcykF2k=
+github.com/libsv/go-bt v1.0.0 h1:Ss08pxPwLP6ztm15QEyjLFLX372Z6OKHS5bsqO6PiIs=
+github.com/libsv/go-bt v1.0.0/go.mod h1:AfXoLFYEbY/TvCq/84xTce2xGjPUuC5imokHmcykF2k=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -20,9 +20,8 @@ github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5Cc
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
-golang.org/x/crypto v0.0.0-20210506145944-38f3c27a63bf/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
-golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97 h1:/UOmuWzQfxxo9UtlXMwuQU8CMgg1eZXqTRwkSQJWKOI=
-golang.org/x/crypto v0.0.0-20210711020723-a769d52b0f97/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=