diff --git a/README.md b/README.md
index 93de17e..951761a 100644
--- a/README.md
+++ b/README.md
@@ -3,26 +3,12 @@
 Go wrappers for [zerokit's RLN](https://github.com/vacp2p/zerokit)
 
 ### Building this library
-
 ```
+git clone https://github.com/status-im/go-zerokit-rln
+cd go-zerokit-rln
+git submodule init
+git submodule update --recursive
 make
 ```
 
-Some architectures are not available in cross unless they're locally build. This [PR](https://github.com/cross-rs/cross/pull/591) will update ubuntu base version on cross. But while it's merged, build them locally. To build them locally execute the following instructions (adapted from [here](https://github.com/cross-rs/cross/wiki/FAQ#newer-linux-versions)):
-
-```
-git clone --single-branch --depth 1 --branch increment_versions https://github.com/Alexhuszagh/cross
-cd cross
-cargo build-docker-image x86_64-pc-windows-gnu
-cargo build-docker-image aarch64-unknown-linux-gnu
-cargo build-docker-image x86_64-unknown-linux-gnu
-cargo build-docker-image arm-unknown-linux-gnueabi
-cargo build-docker-image i686-unknown-linux-gnu
-cargo build-docker-image arm-unknown-linux-gnueabihf
-cargo build-docker-image mips-unknown-linux-gnu
-cargo build-docker-image mips64-unknown-linux-gnuabi64
-cargo build-docker-image mips64el-unknown-linux-gnuabi64
-cargo build-docker-image mipsel-unknown-linux-gnu
-```
-
-`i686-pc-windows-gnu`, and `mips` / `mips64` are currently not supported 
\ No newline at end of file
+To generate smaller static libraries, before `make`, edit `./zerokit/rln/Cargo.toml` and use `branch = "no-ethers-core"` for `ark-circom`
diff --git a/libs/aarch64-linux-android/librln.a b/libs/aarch64-linux-android/librln.a
deleted file mode 100644
index 7b24fcd..0000000
Binary files a/libs/aarch64-linux-android/librln.a and /dev/null differ
diff --git a/libs/aarch64-unknown-linux-gnu/librln.a b/libs/aarch64-unknown-linux-gnu/librln.a
index bfeb9d0..0664805 100644
Binary files a/libs/aarch64-unknown-linux-gnu/librln.a and b/libs/aarch64-unknown-linux-gnu/librln.a differ
diff --git a/libs/arm-unknown-linux-gnueabi/librln.a b/libs/arm-unknown-linux-gnueabi/librln.a
index 089db16..f30f4e2 100644
Binary files a/libs/arm-unknown-linux-gnueabi/librln.a and b/libs/arm-unknown-linux-gnueabi/librln.a differ
diff --git a/libs/arm-unknown-linux-gnueabihf/librln.a b/libs/arm-unknown-linux-gnueabihf/librln.a
index 15bbc72..fc72285 100644
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diff --git a/libs/armv7-linux-androideabi/librln.a b/libs/armv7-linux-androideabi/librln.a
deleted file mode 100644
index 95c9ab8..0000000
Binary files a/libs/armv7-linux-androideabi/librln.a and /dev/null differ
diff --git a/libs/i686-linux-android/librln.a b/libs/i686-linux-android/librln.a
deleted file mode 100644
index ee8ff1d..0000000
Binary files a/libs/i686-linux-android/librln.a and /dev/null differ
diff --git a/libs/i686-unknown-linux-gnu/librln.a b/libs/i686-unknown-linux-gnu/librln.a
index 824b693..8ec5812 100644
Binary files a/libs/i686-unknown-linux-gnu/librln.a and b/libs/i686-unknown-linux-gnu/librln.a differ
diff --git a/libs/x86_64-apple-ios/librln.a b/libs/x86_64-apple-ios/librln.a
deleted file mode 100644
index d035cf1..0000000
Binary files a/libs/x86_64-apple-ios/librln.a and /dev/null differ
diff --git a/libs/x86_64-linux-android/librln.a b/libs/x86_64-linux-android/librln.a
deleted file mode 100644
index 492ded9..0000000
Binary files a/libs/x86_64-linux-android/librln.a and /dev/null differ
diff --git a/libs/x86_64-pc-windows-gnu/librln.a b/libs/x86_64-pc-windows-gnu/librln.a
index 559b9a3..8f17a9d 100644
Binary files a/libs/x86_64-pc-windows-gnu/librln.a and b/libs/x86_64-pc-windows-gnu/librln.a differ
diff --git a/libs/x86_64-unknown-linux-gnu/librln.a b/libs/x86_64-unknown-linux-gnu/librln.a
index e60f3fd..83b8664 100644
Binary files a/libs/x86_64-unknown-linux-gnu/librln.a and b/libs/x86_64-unknown-linux-gnu/librln.a differ
diff --git a/libs/x86_64-unknown-linux-musl/librln.a b/libs/x86_64-unknown-linux-musl/librln.a
index 4b86951..165ca2a 100644
Binary files a/libs/x86_64-unknown-linux-musl/librln.a and b/libs/x86_64-unknown-linux-musl/librln.a differ
diff --git a/rln/librln.h b/rln/librln.h
index 578d624..cf1f017 100644
--- a/rln/librln.h
+++ b/rln/librln.h
@@ -3,7 +3,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 
-#define TEST_TREE_HEIGHT 20
+#define TEST_PARAMETERS_INDEX 2
 
 typedef struct RLN RLN;
 
@@ -54,4 +54,8 @@ bool verify_rln_proof(const struct RLN *ctx,
 
 bool key_gen(const struct RLN *ctx, struct Buffer *output_buffer);
 
+bool seeded_key_gen(const struct RLN *ctx,
+                    const struct Buffer *input_buffer,
+                    struct Buffer *output_buffer);
+
 bool hash(struct RLN *ctx, const struct Buffer *input_buffer, struct Buffer *output_buffer);
diff --git a/rln/link.go b/rln/link.go
index 9e47335..11f8ae0 100644
--- a/rln/link.go
+++ b/rln/link.go
@@ -2,25 +2,15 @@ package rln
 
 /*
 #cgo LDFLAGS:-lrln -ldl -lm
-#cgo android,arm64 LDFLAGS:-L${SRCDIR}/../libs/aarch64-linux-android
-#cgo android,arm7 LDFLAGS:-L${SRCDIR}/../libs/armv7-linux-androideabi
-#cgo android,amd64 LDFLAGS:-L${SRCDIR}/../libs/x86_64-linux-android
-#cgo android,386 LDFLAGS:-L${SRCDIR}/../libs/i686-linux-android
 #cgo linux,arm LDFLAGS:-L${SRCDIR}/../libs/armv7-linux-androideabi
 #cgo linux,arm64 LDFLAGS:-L${SRCDIR}/../libs/aarch64-unknown-linux-gnu
 #cgo linux,amd64,musl,!android LDFLAGS:-L${SRCDIR}/../libs/x86_64-unknown-linux-musl
 #cgo linux,amd64,!musl,!android LDFLAGS:-L${SRCDIR}/../libs/x86_64-unknown-linux-gnu
 #cgo linux,386 LDFLAGS:-L${SRCDIR}/../libs/i686-unknown-linux-gnu
-#cgo linux,mips LDFLAGS:-L${SRCDIR}/../libs/mips-unknown-linux-gnu
-#cgo linux,mips64 LDFLAGS:-L${SRCDIR}/../libs/mips64-unknown-linux-gnuabi64
-#cgo linux,mips64le LDFLAGS:-L${SRCDIR}/../libs/mips64el-unknown-linux-gnuabi64
-#cgo linux,mipsle LDFLAGS:-L${SRCDIR}/../libs/mipsel-unknown-linux-gnu
 #cgo windows,386 LDFLAGS:-L${SRCDIR}/../libs/i686-pc-windows-gnu -lrln -lm -lws2_32 -luserenv
 #cgo windows,amd64 LDFLAGS:-L${SRCDIR}/../libs/x86_64-pc-windows-gnu -lrln -lm -lws2_32 -luserenv
 #cgo darwin,386,!ios LDFLAGS:-L${SRCDIR}/../libs/i686-apple-darwin
 #cgo darwin,arm64,!ios LDFLAGS:-L${SRCDIR}/../libs/aarch64-apple-darwin
 #cgo darwin,amd64,!ios LDFLAGS:-L${SRCDIR}/../libs/x86_64-apple-darwin
-#cgo ios,amd64 LDFLAGS:-L${SRCDIR}/../libs/x86_64-apple-ios -framework Security -framework Foundation
-#cgo ios,arm64 LDFLAGS:-L${SRCDIR}/../libs/aarch64-apple-ios -framework Security -framework Foundation
 */
 import "C"
diff --git a/scripts/build.sh b/scripts/build.sh
index b303c23..1b788de 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -8,48 +8,38 @@ then
 fi
 
 export RUSTFLAGS="-Ccodegen-units=1"
-export CROSS_CONFIG="$PWD/scripts/Cross.toml"
 
 rustup default stable
 
 cargo install cross --git https://github.com/cross-rs/cross --branch main
-#cargo install cargo-lipo
 
 pushd zerokit/rln
 
 cargo clean
 
-cross build --release --lib --target=aarch64-linux-android
-cross build --release --lib --target=armv7-linux-androideabi
-cross build --release --lib --target=i686-linux-android
-cross build --release --lib --target=x86_64-linux-android
-cross build --release --lib --target=x86_64-unknown-linux-musl
 
-# These depend on https://github.com/cross-rs/cross/pull/591 being merged
-# In the meantime, we can follow the instructions from here
-# https://github.com/cross-rs/cross/wiki/FAQ#newer-linux-versions
-# to build the docker images locally. Once that PR is merged,
-# remove the CROSS_CONFIG variable and Cross.toml file
-
-cross build --release --lib --target=aarch64-linux-android
 cross build --release --lib --target=aarch64-unknown-linux-gnu
 cross build --release --lib --target=arm-unknown-linux-gnueabi
 cross build --release --lib --target=arm-unknown-linux-gnueabihf
-cross build --release --lib --target=armv7-linux-androideabi
 cross build --release --lib --target=i686-pc-windows-gnu
 cross build --release --lib --target=i686-unknown-linux-gnu
-cross build --release --lib --target=x86_64-linux-android
 cross build --release --lib --target=x86_64-pc-windows-gnu
 cross build --release --lib --target=x86_64-unknown-linux-gnu
 cross build --release --lib --target=x86_64-unknown-linux-musl
+#cross build --release --lib --target=aarch64-linux-android
+#cross build --release --lib --target=armv7-linux-androideabi
+#cross build --release --lib --target=i686-linux-android
+#cross build --release --lib --target=x86_64-linux-android
 
 # TODO: these work only on iOS
+cargo install cargo-lipo
 rustup target add aarch64-apple-ios x86_64-apple-ios x86_64-apple-darwin aarch64-apple-darwin
 cargo build --release --target=x86_64-apple-darwin --lib
 cargo build --release --target=aarch64-apple-darwin --lib
-cargo build --release --target=x86_64-apple-ios --lib
-cargo build --release --target=aarch64-apple-ios --lib
-#cargo lipo --release
+#cargo build --release --target=x86_64-apple-ios --lib
+#cargo build --release --target=aarch64-apple-ios --lib
+cargo lipo --release
+
 popd
 
 TOOLS_DIR=`dirname $0`
diff --git a/zerokit b/zerokit
index 53092c2..a5aa4e8 160000
--- a/zerokit
+++ b/zerokit
@@ -1 +1 @@
-Subproject commit 53092c286ac5ca031889a735e805897c36564381
+Subproject commit a5aa4e8d4f02b2f0ff12f74ffdb0ce4fde2ec636