diff --git a/codegen.sh b/codegen.sh
index 098af412..d378c6a9 100755
--- a/codegen.sh
+++ b/codegen.sh
@@ -15,46 +15,43 @@
 
 OS="$(uname)"
 case "${OS}" in
-    'Linux')
-        OS='linux'
-        SED_IFLAG=(-i'')
-        ;;
-    'Darwin')
-        OS='macos'
-        SED_IFLAG=(-i '')
-        ;;
-    *)
-        echo "Operating system '${OS}' not supported."
-        exit 1
-        ;;
+'Linux')
+  OS='linux'
+  SED_IFLAG=(-i'')
+  ;;
+'Darwin')
+  OS='macos'
+  SED_IFLAG=(-i '')
+  ;;
+*)
+  echo "Operating system '${OS}' not supported."
+  exit 1
+  ;;
 esac
 
 # Remove existing client generated code
-mkdir -p tmp;
-DIRS=( types client server )
-IGNORED_FILES=( README.md utils.go utils_test.go marshal_test.go account_currency.go account_coin.go )
-
-for dir in "${DIRS[@]}"
-do
-  rm -rf tmp/*;
-  for file in "${IGNORED_FILES[@]}"
-  do
-    [ -f "${dir:?}"/"${file:?}" ] && mv "${dir:?}"/"${file:?}" tmp;
+mkdir -p tmp
+DIRS=(types client server)
+IGNORED_FILES=(README.md utils.go utils_test.go marshal_test.go account_currency.go account_coin.go)
+
+for dir in "${DIRS[@]}"; do
+  rm -rf tmp/*
+  for file in "${IGNORED_FILES[@]}"; do
+    [ -f "${dir:?}"/"${file:?}" ] && mv "${dir:?}"/"${file:?}" tmp
   done
 
-  rm -rf "${dir:?}"/*;
+  rm -rf "${dir:?}"/*
 
-  for file in "${IGNORED_FILES[@]}"
-  do
-    [ -f tmp/"${file:?}" ] && mv tmp/"${file:?}" "${dir:?}"/"${file:?}";
+  for file in "${IGNORED_FILES[@]}"; do
+    [ -f tmp/"${file:?}" ] && mv tmp/"${file:?}" "${dir:?}"/"${file:?}"
   done
 done
 
-rm -rf tmp;
+rm -rf tmp
 
 # Download spec file from releases
 ROSETTA_SPEC_VERSION=1.4.12
-curl -L https://github.com/coinbase/rosetta-specifications/releases/download/v${ROSETTA_SPEC_VERSION}/api.json -o api.json;
+curl -L https://github.com/coinbase/rosetta-specifications/releases/download/v${ROSETTA_SPEC_VERSION}/api.json -o api.json
 
 # Generate client + types code
 GENERATOR_VERSION=v4.3.0
@@ -63,23 +60,22 @@ docker run --user "$(id -u):$(id -g)" --rm -v "${PWD}":/local \
   -i /local/api.json \
   -g go \
   -t /local/templates/client \
-  --additional-properties packageName=client\
-  -o /local/client_tmp;
+  --additional-properties packageName=client -o /local/client_tmp
 
 # Remove unnecessary client files
-rm -f client_tmp/go.mod;
-rm -f client_tmp/README.md;
-rm -f client_tmp/go.mod;
-rm -f client_tmp/go.sum;
-rm -rf client_tmp/api;
-rm -rf client_tmp/docs;
-rm -f client_tmp/git_push.sh;
-rm -f client_tmp/.travis.yml;
-rm -f client_tmp/.gitignore;
-rm -f client_tmp/.openapi-generator-ignore;
-rm -rf client_tmp/.openapi-generator;
-mv client_tmp/* client;
-rm -rf client_tmp;
+rm -f client_tmp/go.mod
+rm -f client_tmp/README.md
+rm -f client_tmp/go.mod
+rm -f client_tmp/go.sum
+rm -rf client_tmp/api
+rm -rf client_tmp/docs
+rm -f client_tmp/git_push.sh
+rm -f client_tmp/.travis.yml
+rm -f client_tmp/.gitignore
+rm -f client_tmp/.openapi-generator-ignore
+rm -rf client_tmp/.openapi-generator
+mv client_tmp/* client
+rm -rf client_tmp
 
 # Add server code
 docker run --user "$(id -u):$(id -g)" --rm -v "${PWD}":/local \
@@ -87,127 +83,123 @@ docker run --user "$(id -u):$(id -g)" --rm -v "${PWD}":/local \
   -i /local/api.json \
   -g go-server \
   -t /local/templates/server \
-  --additional-properties packageName=server\
-  -o /local/server_tmp;
+  --additional-properties packageName=server -o /local/server_tmp
 
 # Remove unnecessary server files
-rm -rf server_tmp/api;
-rm -rf server_tmp/.openapi-generator;
-rm -f server_tmp/.openapi-generator-ignore;
-rm -f server_tmp/go.mod;
-rm -f server_tmp/main.go;
-rm -f server_tmp/README.md;
-rm -f server_tmp/Dockerfile;
-mv server_tmp/go/* server_tmp/.;
-rm -rf server_tmp/go;
+rm -rf server_tmp/api
+rm -rf server_tmp/.openapi-generator
+rm -f server_tmp/.openapi-generator-ignore
+rm -f server_tmp/go.mod
+rm -f server_tmp/main.go
+rm -f server_tmp/README.md
+rm -f server_tmp/Dockerfile
+mv server_tmp/go/* server_tmp/.
+rm -rf server_tmp/go
 rm -f server_tmp/model_*.go
 rm -f server_tmp/*_service.go
-mv server_tmp/* server;
-rm -rf server_tmp;
+mv server_tmp/* server
+rm -rf server_tmp
 
 # Remove spec file
-rm -f api.json;
+rm -f api.json
 
 # Fix linting issues
-sed "${SED_IFLAG[@]}" 's/Api/API/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/Json/JSON/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/Id /ID /g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/Url/URL/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/Api/API/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/Json/JSON/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/Id /ID /g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/Url/URL/g' client/* server/*
 
 # Fix enum pointers
-sed "${SED_IFLAG[@]}" 's/*CurveType/CurveType/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*SignatureType/SignatureType/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*CoinAction/CoinAction/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*ExemptionType/ExemptionType/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*BlockEventType/BlockEventType/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*Direction/Direction/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/*Case/Case/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/*CurveType/CurveType/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*SignatureType/SignatureType/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*CoinAction/CoinAction/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*ExemptionType/ExemptionType/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*BlockEventType/BlockEventType/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*Direction/Direction/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/*Case/Case/g' client/* server/*
 
 # Fix CurveTypes, SignatureTypes, CoinActions, ExemptionTypes, Direction, Case
-sed "${SED_IFLAG[@]}" 's/SECP256K1/Secp256k1/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/SECP256R1/Secp256r1/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/EDWARDS25519/Edwards25519/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/TWEEDLE/Tweedle/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/ECDSA_RECOVERY/EcdsaRecovery/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/ECDSA/Ecdsa/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/ED25519/Ed25519/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/SCHNORR_1/Schnorr1/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/SCHNORR_POSEIDON/SchnorrPoseidon/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/PALLAS/Pallas/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/CREATED/CoinCreated/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/SPENT/CoinSpent/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/GREATER_OR_EQUAL/BalanceGreaterOrEqual/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/LESS_OR_EQUAL/BalanceLessOrEqual/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/DYNAMIC/BalanceDynamic/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/FORWARD/Forward/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/BACKWARD/Backward/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/UPPER_CASE/UpperCase/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/LOWER_CASE/LowerCase/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/CASE_SENSITIVE/CaseSensitive/g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/NULL/Null/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/SECP256K1/Secp256k1/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/SECP256R1/Secp256r1/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/EDWARDS25519/Edwards25519/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/TWEEDLE/Tweedle/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/ECDSA_RECOVERY/EcdsaRecovery/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/ECDSA/Ecdsa/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/ED25519/Ed25519/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/SCHNORR_1/Schnorr1/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/SCHNORR_POSEIDON/SchnorrPoseidon/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/PALLAS/Pallas/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/CREATED/CoinCreated/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/SPENT/CoinSpent/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/GREATER_OR_EQUAL/BalanceGreaterOrEqual/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/LESS_OR_EQUAL/BalanceLessOrEqual/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/DYNAMIC/BalanceDynamic/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/FORWARD/Forward/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/BACKWARD/Backward/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/UPPER_CASE/UpperCase/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/LOWER_CASE/LowerCase/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/CASE_SENSITIVE/CaseSensitive/g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/NULL/Null/g' client/* server/*
 
 # Convert HexBytes to Bytes
-sed "${SED_IFLAG[@]}" '/Hex-encoded public key bytes in the format specified by the CurveType/d' client/* server/*;
-sed "${SED_IFLAG[@]}" -E 's/HexBytes[[:space:]]+string/Bytes []byte/g' client/* server/*;
+sed "${SED_IFLAG[@]}" '/Hex-encoded public key bytes in the format specified by the CurveType/d' client/* server/*
+sed "${SED_IFLAG[@]}" -E 's/HexBytes[[:space:]]+string/Bytes []byte/g' client/* server/*
 
 # Remove special characters
-sed "${SED_IFLAG[@]}" 's/`//g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/\"//g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/\<b>//g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/\<\/b>//g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/<code>//g' client/* server/*;
-sed "${SED_IFLAG[@]}" 's/<\/code>//g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/&#x60;//g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/\&quot;//g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/\&lt;b&gt;//g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/\&lt;\/b&gt;//g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/<code>//g' client/* server/*
+sed "${SED_IFLAG[@]}" 's/<\/code>//g' client/* server/*
 
 # Fix slice containing pointers
-sed "${SED_IFLAG[@]}" 's/\*\[\]/\[\]\*/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/\*\[\]/\[\]\*/g' client/* server/*
 
 # Fix map pointers
-sed "${SED_IFLAG[@]}" 's/\*map/map/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/\*map/map/g' client/* server/*
 
 # Fix string array pointers
-sed "${SED_IFLAG[@]}" 's/\[\]\*string/\[\]string/g' client/* server/*;
+sed "${SED_IFLAG[@]}" 's/\[\]\*string/\[\]string/g' client/* server/*
 
 # Move model files to types/
-mv client/model_*.go types/;
+mv client/model_*.go types/
 for file in types/model_*.go; do
-    mv "$file" "${file/model_/}"
+  mv "$file" "${file/model_/}"
 done
 
 # Change model files to correct package
-sed "${SED_IFLAG[@]}" 's/package client/package types/g' types/*;
+sed "${SED_IFLAG[@]}" 's/package client/package types/g' types/*
 
 # Add version file
-VERSION_CONTENTS=$(sed "s/VERSION/${ROSETTA_SPEC_VERSION}/g" < templates/types.txt);
-echo "${VERSION_CONTENTS}" >> "types/types.go";
-
+VERSION_CONTENTS=$(sed "s/VERSION/${ROSETTA_SPEC_VERSION}/g" <templates/types.txt)
+echo "${VERSION_CONTENTS}" >>"types/types.go"
 
 # Inject Custom Marshaling Logic
 # shellcheck disable=SC2013
-for file in $(grep -Ril "hex_bytes" types)
-do
-  if [[ "${file}" == *"_test.go"* ]];then
-    echo "Skipping injection for ${file}";
-    continue;
+for file in $(grep -Ril "hex_bytes" types); do
+  if [[ "${file}" == *"_test.go"* ]]; then
+    echo "Skipping injection for ${file}"
+    continue
   fi
 
-  RAW_NAME=$(echo "${file}" | cut -c7- | rev | cut -c4- | rev);
-  STRUCT_NAME=$(echo "${RAW_NAME}" | perl -pe 's/(?:\b|_)(\p{Ll})/\u$1/g');
-  MARSHAL_CONTENTS=$(sed "s/STRUCT_NAME/${STRUCT_NAME}/g" < templates/marshal.txt);
-  echo "${MARSHAL_CONTENTS}" >> "${file}";
+  RAW_NAME=$(echo "${file}" | cut -c7- | rev | cut -c4- | rev)
+  STRUCT_NAME=$(echo "${RAW_NAME}" | perl -pe 's/(?:\b|_)(\p{Ll})/\u$1/g')
+  MARSHAL_CONTENTS=$(sed "s/STRUCT_NAME/${STRUCT_NAME}/g" <templates/marshal.txt)
+  echo "${MARSHAL_CONTENTS}" >>"${file}"
   # shellcheck disable=SC1004
   sed "${SED_IFLAG[@]}" 's/package types/package types\
     import \(\
     \"encoding\/hex\"\
     \"encoding\/json\"\
-    \)/g' "${file}";
+    \)/g' "${file}"
 done
 
 # Override certain types with complex marshaling
-OVERRIDDEN_TYPES=( signing_payload construction_derive_response construction_parse_response )
-for type in "${OVERRIDDEN_TYPES[@]}"
-do
-  echo "Overriding ${type}";
-  rm "types/${type}.go" && cp "templates/${type}.txt" "types/${type}.go";
+OVERRIDDEN_TYPES=(signing_payload construction_derive_response construction_parse_response)
+for type in "${OVERRIDDEN_TYPES[@]}"; do
+  echo "Overriding ${type}"
+  rm "types/${type}.go" && cp "templates/${type}.txt" "types/${type}.go"
 done
 
 cp "templates/go.mod.types" "types/go.mod"
@@ -216,7 +208,7 @@ cd ..
 
 # Format client generated code
 FORMAT_GEN="gofmt -w /local/types; gofmt -w /local/client; gofmt -w /local/server"
-GOLANG_VERSION=1.18
+GOLANG_VERSION=1.19
 docker run --rm -v "${PWD}":/local \
   golang:${GOLANG_VERSION} sh -c \
   "cd /local; make deps; ${FORMAT_GEN}; make add-license; make shorten-lines; make fix-imports; go mod tidy;"
diff --git a/templates/go.mod.types b/templates/go.mod.types
index c370901b..a634a255 100644
--- a/templates/go.mod.types
+++ b/templates/go.mod.types
@@ -1,3 +1,3 @@
 module github.com/coinbase/rosetta-sdk-go/types
 
-go 1.18
\ No newline at end of file
+go 1.19
diff --git a/types/go.mod b/types/go.mod
index 6b93da21..ea754603 100644
--- a/types/go.mod
+++ b/types/go.mod
@@ -1,5 +1,14 @@
 module github.com/coinbase/rosetta-sdk-go/types
 
-go 1.18
+go 1.19
 
-require github.com/mitchellh/mapstructure v1.5.0
+require (
+	github.com/mitchellh/mapstructure v1.5.0
+	github.com/stretchr/testify v1.9.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/types/go.sum b/types/go.sum
index 59f4b8e6..bbde9e17 100644
--- a/types/go.sum
+++ b/types/go.sum
@@ -1,2 +1,12 @@
+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/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+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/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=