diff --git a/Cargo.lock b/Cargo.lock
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -228,6 +228,12 @@
  "generic-array",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -535,6 +541,18 @@
  "crypto-common",
 ]
 
+[[package]]
+name = "ecash-lib-wasm"
+version = "0.1.0"
+dependencies = [
+ "abc-rust-lint",
+ "ripemd",
+ "secp256k1-abc",
+ "sha2",
+ "thiserror",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "either"
 version = "1.10.0"
@@ -1574,6 +1592,22 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"
 
+[[package]]
+name = "secp256k1-abc"
+version = "0.20.3"
+source = "git+https://github.com/raipay/secp256k1-abc?rev=b23e742#b23e74219f5c425eada0f53a52f9b51fdb3b23b2"
+dependencies = [
+ "secp256k1-sys-abc",
+]
+
+[[package]]
+name = "secp256k1-sys-abc"
+version = "0.4.1"
+source = "git+https://github.com/raipay/secp256k1-abc?rev=b23e742#b23e74219f5c425eada0f53a52f9b51fdb3b23b2"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.22"
@@ -2005,6 +2039,60 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.58",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.58",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+
 [[package]]
 name = "which"
 version = "4.4.2"
diff --git a/Cargo.toml b/Cargo.toml
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,13 @@
     "chronik/chronik-plugin",
     "chronik/chronik-proto",
     "chronik/chronik-util",
+    "modules/ecash-lib-wasm",
 ]
 
 [workspace.package]
 rust-version = "1.76.0"
+
+[profile.release-wasm]
+inherits = "release"
+lto = true
+opt-level = "z"
diff --git a/chronik/CMakeLists.txt b/chronik/CMakeLists.txt
--- a/chronik/CMakeLists.txt
+++ b/chronik/CMakeLists.txt
@@ -95,6 +95,8 @@
     FLAGS
         ${CHRONIK_CARGO_FLAGS}
         ${CHRONIK_FEATURE_FLAGS}
+    CRATES
+        chronik-lib
 )
 
 set(Rust_TRIPLE
diff --git a/modules/ecash-lib-wasm/Cargo.toml b/modules/ecash-lib-wasm/Cargo.toml
--- a/modules/ecash-lib-wasm/Cargo.toml
+++ b/modules/ecash-lib-wasm/Cargo.toml
@@ -8,10 +8,6 @@
 edition = "2021"
 rust-version = "1.76.0"
 
-[workspace]
-# Not a workspace member
-members = []
-
 [lib]
 crate-type = ["cdylib"]
 
@@ -36,8 +32,3 @@
 rev = "b23e742"
 default-features = false
 features = ["alloc"]
-
-[profile.release-wasm]
-inherits = "release"
-lto = true
-opt-level = "z"