diff --git a/contracts/access_control/Cargo.lock b/contracts/access_control/Cargo.lock
index a2156c82b3..59450d4d86 100644
--- a/contracts/access_control/Cargo.lock
+++ b/contracts/access_control/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "access_control"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "ink_env",
  "ink_lang",
diff --git a/contracts/access_control/Cargo.toml b/contracts/access_control/Cargo.toml
index fe84521b5c..28e7cb8614 100644
--- a/contracts/access_control/Cargo.toml
+++ b/contracts/access_control/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "access_control"
-version = "0.1.0"
+version = "0.2.0"
 authors = ["Cardinal Cryptography"]
 edition = "2021"
 publish = false
diff --git a/contracts/access_control/lib.rs b/contracts/access_control/lib.rs
index 7dc9e848fd..de127a993d 100644
--- a/contracts/access_control/lib.rs
+++ b/contracts/access_control/lib.rs
@@ -1,8 +1,9 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 pub use crate::access_control::{
-    AccessControlError, Role, ACCESS_CONTROL_PUBKEY, CHECK_ROLE_SELECTOR, HAS_ROLE_SELECTOR,
+    AccessControlError, ACCESS_CONTROL_PUBKEY, CHECK_ROLE_SELECTOR, HAS_ROLE_SELECTOR,
 };
+pub mod roles;
 pub mod traits;
 use ink_lang as ink;
 
@@ -10,32 +11,17 @@ use ink_lang as ink;
 mod access_control {
 
     use ink_lang::{codegen::EmitEvent, reflect::ContractEventBase};
-    use ink_storage::{
-        traits::{PackedLayout, SpreadAllocate, SpreadLayout},
-        Mapping,
-    };
+    use ink_storage::{traits::SpreadAllocate, Mapping};
     use scale::{Decode, Encode};
 
+    use crate::roles::Role;
+
     // address placeholder, to be set in the bytecode
     // 4465614444656144446561444465614444656144446561444465614444656144 => 5DcPEG9AQ4Y9Lo9C5WXuKJDDawens77jWxZ6zGChnm8y8FUX
     pub const ACCESS_CONTROL_PUBKEY: [u8; 32] = *b"DeaDDeaDDeaDDeaDDeaDDeaDDeaDDeaD";
     pub const HAS_ROLE_SELECTOR: [u8; 4] = [0, 0, 0, 3];
     pub const CHECK_ROLE_SELECTOR: [u8; 4] = [0, 0, 0, 5];
 
-    #[derive(Debug, Encode, Decode, Clone, Copy, SpreadLayout, PackedLayout, PartialEq, Eq)]
-    #[cfg_attr(
-        feature = "std",
-        derive(scale_info::TypeInfo, ink_storage::traits::StorageLayout)
-    )]
-    pub enum Role {
-        /// Indicates a superuser.
-        Admin(AccountId),
-        /// Indicates account can terminate a contract.
-        Owner(AccountId),
-        /// Indicates account can initialize a contract from a given code hash.
-        Initializer(Hash),
-    }
-
     #[ink(storage)]
     #[derive(SpreadAllocate)]
     pub struct AccessControl {
diff --git a/contracts/access_control/roles.rs b/contracts/access_control/roles.rs
new file mode 100644
index 0000000000..ce607a9160
--- /dev/null
+++ b/contracts/access_control/roles.rs
@@ -0,0 +1,19 @@
+use ink_env::{AccountId, Hash};
+use ink_storage::traits::{PackedLayout, SpreadLayout};
+use scale::{Decode, Encode};
+
+#[derive(Debug, Encode, Decode, Clone, Copy, SpreadLayout, PackedLayout, PartialEq, Eq)]
+#[cfg_attr(
+    feature = "std",
+    derive(scale_info::TypeInfo, ink_storage::traits::StorageLayout)
+)]
+pub enum Role {
+    /// Indicates a superuser.
+    Admin(AccountId),
+    /// Indicates account can terminate a contract.
+    Owner(AccountId),
+    /// Indicates account can initialize a contract from a given code hash.
+    Initializer(Hash),
+    /// Indicates account can add liquidity to a DEX contract (call certain functions)
+    LiquidityProvider(AccountId),
+}
diff --git a/contracts/access_control/traits.rs b/contracts/access_control/traits.rs
index c5a1a6208b..167bf2657c 100644
--- a/contracts/access_control/traits.rs
+++ b/contracts/access_control/traits.rs
@@ -3,7 +3,7 @@ use ink_env::{
     AccountId, DefaultEnvironment, Error as InkEnvError,
 };
 
-use crate::access_control::{Role, HAS_ROLE_SELECTOR};
+use crate::{access_control::HAS_ROLE_SELECTOR, roles::Role};
 
 pub trait AccessControlled {
     type ContractError;
diff --git a/contracts/button/Cargo.lock b/contracts/button/Cargo.lock
index 2c36ea0f76..63021fcccd 100644
--- a/contracts/button/Cargo.lock
+++ b/contracts/button/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "access_control"
-version = "0.1.0"
+version = "1.0.0"
 dependencies = [
  "ink_env",
  "ink_lang",
@@ -42,9 +42,9 @@ checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "bitvec"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1489fcb93a5bb47da0462ca93ad252ad6af2145cce58d10d46a83931ba9f016b"
+checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
 dependencies = [
  "funty",
  "radium",
@@ -74,9 +74,9 @@ dependencies = [
 
 [[package]]
 name = "block-buffer"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bf7fe51849ea569fd452f37822f606a5cabb684dc918707a0193fd4664ff324"
+checksum = "69cce20737498f97b993470a6e536b8523f0af7892a4f928cceb1ac5e52ebe7e"
 dependencies = [
  "generic-array",
 ]
@@ -107,9 +107,9 @@ checksum = "87c5fdd0166095e1d463fc6cc01aa8ce547ad77a4e84d42eb6762b084e28067e"
 
 [[package]]
 name = "camino"
-version = "1.0.9"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "869119e97797867fd90f5e22af7d0bd274bd4635ebb9eb68c04f3f513ae6c412"
+checksum = "88ad0e1e3e88dd237a156ab9f571021b8a158caa0ae44b1968a241efb5144c1e"
 dependencies = [
  "serde",
 ]
@@ -171,18 +171,18 @@ dependencies = [
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.2"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59a6001667ab124aebae2a495118e11d30984c3a653e99d86d58971708cf5e4b"
+checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "crypto-common"
-version = "0.1.4"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5999502d32b9c48d492abe66392408144895020ec4709e549e840799f3bb74c0"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
 dependencies = [
  "generic-array",
  "typenum",
@@ -231,9 +231,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.7.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f107b87b6afc2a64fd13cac55fe06d6c8859f12d4b14cbcdd2c67d0976781be"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 
 [[package]]
 name = "fs2"
@@ -269,9 +269,9 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.14.5"
+version = "0.14.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd48d33ec7f05fbfa152300fdad764757cbded343c1aa1cff2fbaf4134851803"
+checksum = "bff49e947297f3312447abdca79f45f4738097cc82b06e72054d2223f601f1b9"
 dependencies = [
  "typenum",
  "version_check",
@@ -325,18 +325,18 @@ dependencies = [
 
 [[package]]
 name = "ink_allocator"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ed249de74298ed051ebcf6d3082b8d3dbd19cbc448d9ed3235d8a7b92713049"
+checksum = "a291f411e310b7a3bb01ce21102b8c0aea5b7b523e4bad0b40a8e55a76c58906"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "ink_engine"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "acb9d32ec27d71fefb3f2b6a26bae82a2c6509d7ad61e8a5107b6291a1b03ecb"
+checksum = "075eab468da2937288ec484be920cb18614147003d7f1afbdfcfb190ed771c46"
 dependencies = [
  "blake2 0.10.4",
  "derive_more",
@@ -349,9 +349,9 @@ dependencies = [
 
 [[package]]
 name = "ink_env"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1549f5966167387c89fb3dfcdc59973bfb396cc3a7110d7a31ad5fdea56db0cf"
+checksum = "271689b643d7ccf2bcd09d7ef07eda79cd3366ee042d5bbfcebf534b08da79d7"
 dependencies = [
  "arrayref",
  "blake2 0.10.4",
@@ -376,9 +376,9 @@ dependencies = [
 
 [[package]]
 name = "ink_lang"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e5282f2722ac6dca469e7f223a7b38b2a6d20fbca6b974497e630d5dc8934e9"
+checksum = "62cf662fe6a130ea1ada3520142405e3ed521b79c35b7274cc95dd37bc833571"
 dependencies = [
  "derive_more",
  "ink_env",
@@ -392,9 +392,9 @@ dependencies = [
 
 [[package]]
 name = "ink_lang_codegen"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb3a5de33b59450adc3f61c5eb05b768067c7ab8af9d00f33e284310598168dc"
+checksum = "94dc22732ced2557f0411de5fa31d6fddc3878968041b699ae16ed1c390d2660"
 dependencies = [
  "blake2 0.10.4",
  "derive_more",
@@ -411,9 +411,9 @@ dependencies = [
 
 [[package]]
 name = "ink_lang_ir"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9d4d614462280fa06e15b9ca5725d7c8440dde93c8dae1c6f15422f7756cacb"
+checksum = "a089bcac8d7e6a487b7a18ea8a1d20eb540ed26657706ac221cc0e8239047e45"
 dependencies = [
  "blake2 0.10.4",
  "either",
@@ -425,9 +425,9 @@ dependencies = [
 
 [[package]]
 name = "ink_lang_macro"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72f85f64141957c5db7cbabbb97a9c16c489e5e9d363e9f147d132a43c71cd29"
+checksum = "1330da0b8007b86de94f95fbc74769c0461d3b078b291af5497771598db1c5b4"
 dependencies = [
  "ink_lang_codegen",
  "ink_lang_ir",
@@ -439,9 +439,9 @@ dependencies = [
 
 [[package]]
 name = "ink_metadata"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dca6c159a2774f07437c6fd9ea710eb73a6b5e9a031a932bddf08742bf2c081a"
+checksum = "d442f4f5dcbf120aa84cae9e399065ad99d143d5a920b06d3da286e91c03ec70"
 dependencies = [
  "derive_more",
  "impl-serde",
@@ -453,18 +453,18 @@ dependencies = [
 
 [[package]]
 name = "ink_prelude"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f7f4dec15e573496c9d2af353e78bde84add391251608f25b5adcf175dc777"
+checksum = "e38d71af62cfec3425727d28665a947d636c3be6ae71ac3a79868ef8a08633f3"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "ink_primitives"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3296dd1c4f4fe12ede7c92d60e6fcb94d46a959ec19c701e4ac588b09e0b4a6"
+checksum = "ea7afd5330a9d3be1533222a48b8ab44b3a3356a5e6bb090bff0790aa562b418"
 dependencies = [
  "cfg-if",
  "ink_prelude",
@@ -474,9 +474,9 @@ dependencies = [
 
 [[package]]
 name = "ink_storage"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ff9b503995a7b41fe201a7a2643ce22f5a11e0b67db7b685424b6d5fe0ecf0b"
+checksum = "be827b98c102c413b2309075f0835a9bb8c6325fc6aa09e66963424db7a8bcb5"
 dependencies = [
  "array-init",
  "cfg-if",
@@ -492,9 +492,9 @@ dependencies = [
 
 [[package]]
 name = "ink_storage_derive"
-version = "3.3.0"
+version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afb68e24e93e8327dda1924868d7ee4dbe01e1ed2b392f28583caa96809b585c"
+checksum = "8ced452d5d0b2268b1257ffd2ec73cf9c3b4fba5f3632f185a03aafec8888439"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -504,18 +504,18 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.10.3"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+checksum = "d8bf247779e67a9082a4790b45e71ac7cfd1321331a5c856a74a9faebdab78d0"
 dependencies = [
  "either",
 ]
 
 [[package]]
 name = "itoa"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"
+checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
 
 [[package]]
 name = "keccak"
@@ -525,9 +525,9 @@ checksum = "f9b7d56ba4a8344d6be9729995e6b06f928af29998cdf79fe390cbf6b1fee838"
 
 [[package]]
 name = "libc"
-version = "0.2.126"
+version = "0.2.132"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
 
 [[package]]
 name = "num-traits"
@@ -538,6 +538,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f7254b99e31cad77da24b08ebf628882739a608578bb1bcdfc1f9c21260d7c0"
+
 [[package]]
 name = "opaque-debug"
 version = "0.3.0"
@@ -626,9 +632,9 @@ dependencies = [
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.1.5"
+version = "3.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9182e4a71cae089267ab03e67c99368db7cd877baf50f931e5d6d4b71e195ac0"
+checksum = "366e44391a8af4cfd6002ef6ba072bae071a96aafca98d7d448a34c5dca38b6a"
 dependencies = [
  "arrayvec",
  "bitvec",
@@ -652,15 +658,15 @@ dependencies = [
 
 [[package]]
 name = "paste"
-version = "1.0.7"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c520e05135d6e763148b6426a837e239041653ba7becd2e538c076c738025fc"
+checksum = "b1de2e551fb905ac83f73f7aedf2f0cb4a0da7e35efa24a202a936269f1f18e1"
 
 [[package]]
 name = "pest"
-version = "2.2.1"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69486e2b8c2d2aeb9762db7b4e00b0331156393555cff467f4163ff06821eef8"
+checksum = "cb779fcf4bb850fbbb0edc96ff6cf34fd90c4b1a112ce042653280d9a7364048"
 dependencies = [
  "thiserror",
  "ucd-trie",
@@ -674,28 +680,29 @@ checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
 
 [[package]]
 name = "proc-macro-crate"
-version = "1.1.3"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e17d47ce914bf4de440332250b0edd23ce48c005f59fab39d3335866b114f11a"
+checksum = "eda0fc3b0fb7c975631757e14d9049da17374063edb6ebbcbc54d880d4fe94e9"
 dependencies = [
+ "once_cell",
  "thiserror",
  "toml",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.40"
+version = "1.0.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
+checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.20"
+version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
+checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
 dependencies = [
  "proc-macro2",
 ]
@@ -750,9 +757,9 @@ checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
 
 [[package]]
 name = "scale-info"
-version = "2.1.2"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c46be926081c9f4dd5dd9b6f1d3e3229f2360bc6502dd8836f84a93b7c75e99a"
+checksum = "333af15b02563b8182cd863f925bd31ef8fa86a0e095d30c091956057d436153"
 dependencies = [
  "bitvec",
  "cfg-if",
@@ -764,9 +771,9 @@ dependencies = [
 
 [[package]]
 name = "scale-info-derive"
-version = "2.1.2"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50e334bb10a245e28e5fd755cabcafd96cfcd167c99ae63a46924ca8d8703a3c"
+checksum = "53f56acbd0743d29ffa08f911ab5397def774ad01bab3786804cf6ee057fb5e1"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -776,18 +783,18 @@ dependencies = [
 
 [[package]]
 name = "secp256k1"
-version = "0.22.1"
+version = "0.24.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26947345339603ae8395f68e2f3d85a6b0a8ddfe6315818e80b8504415099db0"
+checksum = "b7649a0b3ffb32636e60c7ce0d70511eda9c52c658cd0634e194d5a19943aeff"
 dependencies = [
  "secp256k1-sys",
 ]
 
 [[package]]
 name = "secp256k1-sys"
-version = "0.5.2"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "152e20a0fd0519390fc43ab404663af8a0b794273d2a91d60ad4a39f13ffe110"
+checksum = "7058dc8eaf3f2810d7828680320acda0b25a288f6d288e19278e249bbf74226b"
 dependencies = [
  "cc",
 ]
@@ -813,18 +820,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.138"
+version = "1.0.144"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1578c6245786b9d168c5447eeacfb96856573ca56c9d68fdcf394be134882a47"
+checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.138"
+version = "1.0.144"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "023e9b1467aef8a10fb88f25611870ada9800ef7e22afce356bb0d2387b6f27c"
+checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -833,9 +840,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.82"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82c2c1fdcd807d1098552c5b9a36e425e42e9fbd7c6a37a8425f390f781f7fa7"
+checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
 dependencies = [
  "itoa",
  "ryu",
@@ -844,9 +851,9 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.10.2"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55deaec60f81eefe3cce0dc50bda92d6d8e88f2a27df7c5033b42afeb1ed2676"
+checksum = "cf9db03534dff993187064c4e0c05a5708d2a9728ace9a8959b77bedf415dac5"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -861,9 +868,9 @@ checksum = "5edcd790916d95ff81bdc1505b09c74d30d47a755929cc8c71c59cbbfa99f91b"
 
 [[package]]
 name = "sha3"
-version = "0.10.1"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "881bf8156c87b6301fc5ca6b27f11eeb2761224c7081e69b409d5a1951a70c86"
+checksum = "eaedf34ed289ea47c2b741bb72e5357a209512d67bcd4bda44359e5bf0470f56"
 dependencies = [
  "digest 0.10.3",
  "keccak",
@@ -883,9 +890,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.98"
+version = "1.0.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
+checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -912,18 +919,18 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "thiserror"
-version = "1.0.31"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
+checksum = "c53f98874615aea268107765aa1ed8f6116782501d18e53d08b471733bea6c85"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.31"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
+checksum = "f8b463991b4eab2d801e724172285ec4195c650e8ec79b149e6c2a8e6dd3f783"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -963,21 +970,21 @@ checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 
 [[package]]
 name = "ucd-trie"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89570599c4fe5585de2b388aab47e99f7fa4e9238a1399f707a02e356058141c"
+checksum = "9e79c4d996edb816c91e4308506774452e55e95c3c9de07b6729e17e15a5ef81"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.1"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd2fe26506023ed7b5e1e315add59d6f584c621d037f9368fea9cfb988f368c"
+checksum = "dcc811dc4066ac62f84f11307873c4850cb653bfa9b1719cee2bd2204a4bc5dd"
 
 [[package]]
 name = "unicode-segmentation"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e8820f5d777f6224dc4be3632222971ac30164d4a258d595640799554ebfd99"
+checksum = "0fdbf052a0783de01e944a6ce7a8cb939e295b1e7be835a1112c3b9a7f047a5a"
 
 [[package]]
 name = "unicode-xid"
diff --git a/contracts/button/errors.rs b/contracts/button/errors.rs
index 4da4c55914..c6d8382833 100644
--- a/contracts/button/errors.rs
+++ b/contracts/button/errors.rs
@@ -1,4 +1,4 @@
-use access_control::Role;
+use access_control::roles::Role;
 use ink_env::Error as InkEnvError;
 use ink_prelude::{format, string::String};
 use openbrush::contracts::psp22::PSP22Error;
diff --git a/contracts/button/lib.rs b/contracts/button/lib.rs
index 343acef407..e0ef00f703 100644
--- a/contracts/button/lib.rs
+++ b/contracts/button/lib.rs
@@ -6,7 +6,7 @@ use ink_lang as ink;
 
 #[ink::contract]
 mod button_game {
-    use access_control::{traits::AccessControlled, Role, ACCESS_CONTROL_PUBKEY};
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
     use game_token::MINT_TO_SELECTOR;
     use ink_env::{
         call::{build_call, Call, ExecutionInput, Selector},
diff --git a/contracts/game_token/Cargo.lock b/contracts/game_token/Cargo.lock
index 01b884861c..1febd0fb6c 100644
--- a/contracts/game_token/Cargo.lock
+++ b/contracts/game_token/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "access_control"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "ink_env",
  "ink_lang",
diff --git a/contracts/game_token/lib.rs b/contracts/game_token/lib.rs
index aeff1aeab0..eeecacacb3 100644
--- a/contracts/game_token/lib.rs
+++ b/contracts/game_token/lib.rs
@@ -2,12 +2,13 @@
 #![feature(min_specialization)]
 
 pub use crate::game_token::{
-    BALANCE_OF_SELECTOR, MINT_TO_SELECTOR, TRANSFER_FROM_SELECTOR, TRANSFER_SELECTOR,
+    ALLOWANCE_SELECTOR, BALANCE_OF_SELECTOR, MINT_TO_SELECTOR, TRANSFER_FROM_SELECTOR,
+    TRANSFER_SELECTOR,
 };
 
 #[openbrush::contract]
 pub mod game_token {
-    use access_control::{traits::AccessControlled, Role, ACCESS_CONTROL_PUBKEY};
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
     use ink_env::Error as InkEnvError;
     use ink_lang::{
         codegen::{EmitEvent, Env},
@@ -23,6 +24,7 @@ pub mod game_token {
     pub const BALANCE_OF_SELECTOR: [u8; 4] = [0x65, 0x68, 0x38, 0x2f];
     pub const TRANSFER_SELECTOR: [u8; 4] = [0xdb, 0x20, 0xf9, 0xf5];
     pub const TRANSFER_FROM_SELECTOR: [u8; 4] = [0x54, 0xb3, 0xc7, 0x6e];
+    pub const ALLOWANCE_SELECTOR: [u8; 4] = [0x4d, 0x47, 0xd9, 0x21];
     // TODO : use correct selector when mint/burn is implemented
     pub const MINT_TO_SELECTOR: [u8; 4] = [0x0, 0x0, 0x0, 0x0];
 
@@ -133,7 +135,7 @@ pub mod game_token {
                 Ok(_) => ink_lang::codegen::initialize_contract(|instance: &mut GameToken| {
                     instance.metadata.name = Some(name);
                     instance.metadata.symbol = Some(symbol);
-                    instance.metadata.decimals = 18;
+                    instance.metadata.decimals = 12;
                     instance
                         ._mint(instance.env().caller(), total_supply)
                         .expect("Should mint");
diff --git a/contracts/marketplace/Cargo.lock b/contracts/marketplace/Cargo.lock
index 890f67d366..f7039b7356 100644
--- a/contracts/marketplace/Cargo.lock
+++ b/contracts/marketplace/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "access_control"
-version = "0.1.0"
+version = "1.0.0"
 dependencies = [
  "ink_env",
  "ink_lang",
diff --git a/contracts/marketplace/lib.rs b/contracts/marketplace/lib.rs
index 7c85f6d876..65c1fc4744 100644
--- a/contracts/marketplace/lib.rs
+++ b/contracts/marketplace/lib.rs
@@ -23,7 +23,7 @@ use ink_lang as ink;
 
 #[ink::contract]
 pub mod marketplace {
-    use access_control::{traits::AccessControlled, Role, ACCESS_CONTROL_PUBKEY};
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
     use game_token::TRANSFER_FROM_SELECTOR as TRANSFER_FROM_GAME_TOKEN_SELECTOR;
     use ink_env::{
         call::{build_call, Call, ExecutionInput, Selector},
diff --git a/contracts/simple_dex/Cargo.lock b/contracts/simple_dex/Cargo.lock
new file mode 100644
index 0000000000..0dd7a6f029
--- /dev/null
+++ b/contracts/simple_dex/Cargo.lock
@@ -0,0 +1,1026 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "access_control"
+version = "0.2.0"
+dependencies = [
+ "ink_env",
+ "ink_lang",
+ "ink_lang_codegen",
+ "ink_metadata",
+ "ink_primitives",
+ "ink_storage",
+ "parity-scale-codec",
+ "scale-info",
+]
+
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+
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+ "wyz",
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diff --git a/contracts/simple_dex/Cargo.toml b/contracts/simple_dex/Cargo.toml
new file mode 100644
index 0000000000..2f141e8076
--- /dev/null
+++ b/contracts/simple_dex/Cargo.toml
@@ -0,0 +1,50 @@
+[package]
+name = "simple_dex"
+version = "0.1.0"
+authors = ["Cardinal Cryptography"]
+edition = "2021"
+license = "Apache 2.0"
+
+[dependencies]
+ink_env = { version = "~3.3.0", default-features = false }
+ink_lang = { version = "~3.3.0", default-features = false }
+ink_lang_codegen = { version = "~3.3.0", default-features = false }
+ink_metadata = { version = "~3.3.0", default-features = false, features = ["derive"], optional = true }
+ink_prelude = { version = "~3.3.0", default-features = false }
+ink_primitives = { version = "~3.3.0", default-features = false }
+ink_storage = { version = "~3.3.0", default-features = false }
+
+scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
+scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
+
+openbrush = { git = "https://github.com/Supercolony-net/openbrush-contracts.git", rev = "8a20f95", default-features = false, features = ["psp22"] }
+access_control = { path = "../access_control", default-features = false, features = ["ink-as-dependency"] }
+game_token = { path = "../game_token", default-features = false, features = ["ink-as-dependency"] }
+
+[lib]
+name = "simple_dex"
+path = "lib.rs"
+crate-type = [
+  # Used for normal contract Wasm blobs.
+  "cdylib",
+]
+
+[features]
+default = ["std"]
+std = [
+  "access_control/std",
+  "game_token/std",
+  "ink_env/std",
+  "ink_lang_codegen/std",
+  "ink_metadata/std",
+  "ink_prelude/std",
+  "ink_primitives/std",
+  "ink_storage/std",
+  "openbrush/std",
+  "scale-info/std",
+  "scale/std",
+]
+ink-as-dependency = []
+
+[profile.dev]
+codegen-units = 16
\ No newline at end of file
diff --git a/contracts/simple_dex/lib.rs b/contracts/simple_dex/lib.rs
new file mode 100644
index 0000000000..b058994c80
--- /dev/null
+++ b/contracts/simple_dex/lib.rs
@@ -0,0 +1,506 @@
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use ink_lang as ink;
+
+/// Simple DEX contract
+///
+/// This contract is based on Balancer multi asset LP design and all formulas are taken from the Balancer's whitepaper (https://balancer.fi/whitepaper.pdf)
+/// It has one pool with PSP22 tokens with equal weights
+///
+/// Swaps can be performed between all pairs in the pool whitelisted for trading
+/// Liquidity provisioning is limited to designated accounts only and works as deposits / withdrawals of arbitrary composition.
+
+#[ink::contract]
+mod simple_dex {
+
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
+    use game_token::{
+        ALLOWANCE_SELECTOR, BALANCE_OF_SELECTOR, TRANSFER_FROM_SELECTOR, TRANSFER_SELECTOR,
+    };
+    use ink_env::{
+        call::{build_call, Call, ExecutionInput, Selector},
+        CallFlags, DefaultEnvironment, Error as InkEnvError,
+    };
+    use ink_lang::{
+        codegen::{initialize_contract, EmitEvent},
+        reflect::ContractEventBase,
+    };
+    use ink_prelude::{format, string::String, vec, vec::Vec};
+    use ink_storage::traits::{PackedLayout, SpreadAllocate, SpreadLayout};
+    use openbrush::{contracts::traits::errors::PSP22Error, storage::Mapping};
+
+    type Event = <SimpleDex as ContractEventBase>::Type;
+
+    #[derive(Debug, PartialEq, Eq, scale::Encode, scale::Decode, SpreadLayout, PackedLayout)]
+    #[cfg_attr(feature = "std", derive(scale_info::TypeInfo))]
+    pub struct SwapPair {
+        pub from: AccountId,
+        pub to: AccountId,
+    }
+
+    impl SwapPair {
+        pub fn new(from: AccountId, to: AccountId) -> Self {
+            Self { from, to }
+        }
+    }
+
+    #[derive(Debug, PartialEq, Eq, scale::Encode, scale::Decode)]
+    #[cfg_attr(feature = "std", derive(scale_info::TypeInfo))]
+    pub enum DexError {
+        PSP22(PSP22Error),
+        InsufficientAllowanceOf(AccountId),
+        Arithmethic,
+        WrongParameterValue,
+        MissingRole(Role),
+        InkEnv(String),
+        CrossContractCall(String),
+        TooMuchSlippage,
+        NotEnoughLiquidityOf(AccountId),
+        UnsupportedSwapPair(SwapPair),
+    }
+
+    impl From<PSP22Error> for DexError {
+        fn from(e: PSP22Error) -> Self {
+            DexError::PSP22(e)
+        }
+    }
+
+    impl From<InkEnvError> for DexError {
+        fn from(why: InkEnvError) -> Self {
+            DexError::InkEnv(format!("{:?}", why))
+        }
+    }
+
+    #[ink(event)]
+    pub struct SwapPairAdded {
+        #[ink(topic)]
+        pair: SwapPair,
+    }
+
+    #[ink(event)]
+    pub struct SwapPairRemoved {
+        #[ink(topic)]
+        pair: SwapPair,
+    }
+
+    #[ink(event)]
+    pub struct Swapped {
+        caller: AccountId,
+        #[ink(topic)]
+        token_in: AccountId,
+        #[ink(topic)]
+        token_out: AccountId,
+        amount_in: Balance,
+        amount_out: Balance,
+    }
+
+    #[ink(event)]
+    pub struct SwapFeeSet {
+        #[ink(topic)]
+        caller: AccountId,
+        swap_fee_percentage: u128,
+    }
+
+    #[ink(storage)]
+    #[derive(SpreadAllocate)]
+    pub struct SimpleDex {
+        pub swap_fee_percentage: u128,
+        pub access_control: AccountId,
+        // a set of pairs that are availiable for swapping between
+        pub swap_pairs: Mapping<SwapPair, ()>,
+    }
+
+    impl AccessControlled for SimpleDex {
+        type ContractError = DexError;
+    }
+
+    impl SimpleDex {
+        #[ink(constructor)]
+        pub fn new() -> Self {
+            let caller = Self::env().caller();
+            let code_hash = Self::env()
+                .own_code_hash()
+                .expect("Called new on a contract with no code hash");
+            let required_role = Role::Initializer(code_hash);
+            let access_control = AccountId::from(ACCESS_CONTROL_PUBKEY);
+
+            let role_check = <Self as AccessControlled>::check_role(
+                access_control,
+                caller,
+                required_role,
+                Self::cross_contract_call_error_handler,
+                Self::access_control_error_handler,
+            );
+
+            match role_check {
+                Ok(_) => initialize_contract(|contract| Self::new_init(contract)),
+                Err(why) => panic!("Could not initialize the contract {:?}", why),
+            }
+        }
+
+        /// Swaps the a specified amount of one of the pool's PSP22 tokens to another PSP22 token
+        /// Calling account needs to give allowance to the DEX contract to spend amount_token_in of token_in on its behalf
+        /// before executing this tx.
+        #[ink(message)]
+        pub fn swap(
+            &mut self,
+            token_in: AccountId,
+            token_out: AccountId,
+            amount_token_in: Balance,
+            min_amount_token_out: Balance,
+        ) -> Result<(), DexError> {
+            let this = self.env().account_id();
+            let caller = self.env().caller();
+
+            let swap_pair = SwapPair::new(token_in, token_out);
+            if !self.swap_pairs.contains(&swap_pair) {
+                return Err(DexError::UnsupportedSwapPair(swap_pair));
+            }
+
+            // check allowance
+            if self.allowance(token_in, caller, this)? < amount_token_in {
+                return Err(DexError::InsufficientAllowanceOf(token_in));
+            }
+
+            let balance_token_in = self.balance_of(token_in, this)?;
+            let balance_token_out = self.balance_of(token_out, this)?;
+
+            if balance_token_out < min_amount_token_out {
+                // throw early if we cannot support this swap anyway due to liquidity being too low
+                return Err(DexError::NotEnoughLiquidityOf(token_out));
+            }
+
+            let amount_token_out = Self::out_given_in(
+                amount_token_in,
+                balance_token_in,
+                balance_token_out,
+                self.swap_fee_percentage,
+            )?;
+
+            if amount_token_out < min_amount_token_out {
+                // thrown if too much slippage occured before this tx gets executed
+                // as a sandwich attack prevention
+                return Err(DexError::TooMuchSlippage);
+            }
+
+            // transfer token_in from user to the contract
+            self.transfer_from_tx(token_in, caller, this, amount_token_in)??;
+            // transfer token_out from contract to user
+            self.transfer_tx(token_out, caller, amount_token_out)??;
+
+            // emit event
+            Self::emit_event(
+                self.env(),
+                Event::Swapped(Swapped {
+                    caller,
+                    token_in,
+                    token_out,
+                    amount_in: amount_token_in,
+                    amount_out: amount_token_out,
+                }),
+            );
+
+            Ok(())
+        }
+
+        /// Liquidity deposit
+        ///
+        /// Can only be performed by an account with a LiquidityProvider role
+        /// Caller needs to give at least the passed amount of allowance to the contract to spend the deposited tokens on his behalf
+        /// prior to executing this tx
+        #[ink(message)]
+        pub fn deposit(&mut self, deposits: Vec<(AccountId, Balance)>) -> Result<(), DexError> {
+            let this = self.env().account_id();
+            let caller = self.env().caller();
+
+            // check role, only designated account can add liquidity
+            self.check_role(caller, Role::LiquidityProvider(this))?;
+
+            deposits
+                .into_iter()
+                .try_for_each(|(token_in, amount)| -> Result<(), DexError> {
+                    // transfer token_in from the caller to the contract
+                    // will revert if the contract does not have enough allowance from the caller
+                    // in which case the whole tx is reverted
+                    self.transfer_from_tx(token_in, caller, this, amount)??;
+                    Ok(())
+                })?;
+
+            Ok(())
+        }
+
+        #[ink(message)]
+        pub fn withdrawal(
+            &mut self,
+            withdrawals: Vec<(AccountId, Balance)>,
+        ) -> Result<(), DexError> {
+            let this = self.env().account_id();
+            let caller = self.env().caller();
+
+            // check role, only designated account can remove liquidity
+            self.check_role(caller, Role::LiquidityProvider(this))?;
+
+            withdrawals.into_iter().try_for_each(
+                |(token_out, amount)| -> Result<(), DexError> {
+                    // transfer token_out from the contract to the caller
+                    self.transfer_tx(token_out, caller, amount)??;
+                    Ok(())
+                },
+            )?;
+
+            Ok(())
+        }
+
+        /// Alters the swap_fee parameter
+        ///
+        /// Can only be called by the contract's Admin.
+        #[ink(message)]
+        pub fn set_swap_fee_percentage(
+            &mut self,
+            swap_fee_percentage: u128,
+        ) -> Result<(), DexError> {
+            if swap_fee_percentage.gt(&100) {
+                return Err(DexError::WrongParameterValue);
+            }
+
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+
+            self.check_role(caller, Role::Admin(this))?;
+
+            // emit event
+            Self::emit_event(
+                self.env(),
+                Event::SwapFeeSet(SwapFeeSet {
+                    caller,
+                    swap_fee_percentage,
+                }),
+            );
+
+            self.swap_fee_percentage = swap_fee_percentage;
+            Ok(())
+        }
+
+        /// Returns current value of the swap_fee_percentage parameter
+        #[ink(message)]
+        pub fn swap_fee_percentage(&mut self) -> Balance {
+            self.swap_fee_percentage
+        }
+
+        /// Sets access_control to a new contract address
+        ///
+        /// Potentially very destructive, can only be called by the contract's Owner.
+        #[ink(message)]
+        pub fn set_access_control(&mut self, access_control: AccountId) -> Result<(), DexError>
+        where
+            Self: AccessControlled,
+        {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+
+            self.check_role(caller, Role::Owner(this))?;
+
+            self.access_control = access_control;
+            Ok(())
+        }
+
+        /// Returns current address of the AccessControl contract that holds the account priviledges for this DEX
+        #[ink(message)]
+        pub fn access_control(&self) -> AccountId {
+            self.access_control
+        }
+
+        /// Whitelists a token pair for swapping between
+        ///
+        /// Token pair is understood as a swap between tokens in one direction
+        /// Can only be called by an Admin
+        #[ink(message)]
+        pub fn add_swap_pair(&mut self, from: AccountId, to: AccountId) -> Result<(), DexError> {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+            self.check_role(caller, Role::Admin(this))?;
+
+            let pair = SwapPair::new(from, to);
+            self.swap_pairs.insert(&pair, &());
+
+            Self::emit_event(self.env(), Event::SwapPairAdded(SwapPairAdded { pair }));
+
+            Ok(())
+        }
+
+        /// Blacklists a token pair from swapping
+        ///
+        /// Token pair is understood as a swap between tokens in one direction
+        /// Can only be called by an Admin
+        #[ink(message)]
+        pub fn remove_swap_pair(&mut self, from: AccountId, to: AccountId) -> Result<(), DexError> {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+            self.check_role(caller, Role::Admin(this))?;
+
+            let pair = SwapPair::new(from, to);
+            self.swap_pairs.remove(&pair);
+
+            Self::emit_event(self.env(), Event::SwapPairRemoved(SwapPairRemoved { pair }));
+
+            Ok(())
+        }
+
+        /// Terminates the contract.
+        ///
+        /// Can only be called by the contract's Owner.
+        #[ink(message)]
+        pub fn terminate(&mut self) -> Result<(), DexError> {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+            self.check_role(caller, Role::Owner(this))?;
+            self.env().terminate_contract(caller)
+        }
+
+        /// Returns own code hash
+        #[ink(message)]
+        pub fn code_hash(&self) -> Result<Hash, DexError> {
+            self.env()
+                .own_code_hash()
+                .map_err(|why| DexError::InkEnv(format!("Can't retrieve own code hash: {:?}", why)))
+        }
+
+        fn new_init(&mut self) {
+            self.access_control = AccountId::from(ACCESS_CONTROL_PUBKEY);
+            self.swap_fee_percentage = 0;
+        }
+
+        /// Transfers a given amount of a PSP22 token to a specified using the callers own balance
+        fn transfer_tx(
+            &self,
+            token: AccountId,
+            to: AccountId,
+            amount: Balance,
+        ) -> Result<Result<(), PSP22Error>, InkEnvError> {
+            build_call::<DefaultEnvironment>()
+                .call_type(Call::new().callee(token))
+                .exec_input(
+                    ExecutionInput::new(Selector::new(TRANSFER_SELECTOR))
+                        .push_arg(to)
+                        .push_arg(amount)
+                        .push_arg(vec![0x0]),
+                )
+                .returns::<Result<(), PSP22Error>>()
+                .fire()
+        }
+
+        /// Transfers a given amount of a PSP22 token on behalf of a specified account to another account
+        ///
+        /// Will revert if not enough allowance was given to the caller prior to executing this tx
+        fn transfer_from_tx(
+            &self,
+            token: AccountId,
+            from: AccountId,
+            to: AccountId,
+            amount: Balance,
+        ) -> Result<Result<(), PSP22Error>, InkEnvError> {
+            build_call::<DefaultEnvironment>()
+                .call_type(Call::new().callee(token))
+                .exec_input(
+                    ExecutionInput::new(Selector::new(TRANSFER_FROM_SELECTOR))
+                        .push_arg(from)
+                        .push_arg(to)
+                        .push_arg(amount)
+                        .push_arg(vec![0x0]),
+                )
+                .call_flags(CallFlags::default().set_allow_reentry(true)) // needed for checking allowance before the actual tx
+                .returns::<Result<(), PSP22Error>>()
+                .fire()
+        }
+
+        /// Returns the amount of unused allowance that the token owner has given to the spender
+        fn allowance(
+            &self,
+            token: AccountId,
+            owner: AccountId,
+            spender: AccountId,
+        ) -> Result<Balance, InkEnvError> {
+            build_call::<DefaultEnvironment>()
+                .call_type(Call::new().callee(token))
+                .exec_input(
+                    ExecutionInput::new(Selector::new(ALLOWANCE_SELECTOR))
+                        .push_arg(owner)
+                        .push_arg(spender),
+                )
+                .returns::<Balance>()
+                .fire()
+        }
+
+        /// Returns DEX balance of a PSP22 token for an account
+        fn balance_of(&self, token: AccountId, account: AccountId) -> Result<Balance, InkEnvError> {
+            build_call::<DefaultEnvironment>()
+                .call_type(Call::new().callee(token))
+                .exec_input(
+                    ExecutionInput::new(Selector::new(BALANCE_OF_SELECTOR)).push_arg(account),
+                )
+                .returns::<Balance>()
+                .fire()
+        }
+
+        /// Swap trade output given a curve with equal token weights
+        ///
+        /// swap_fee_percentage (integer) is a percentage of the trade that goes towards the pool
+        /// B_0 - (100 * B_0 * B_i) / (100 * (B_i + A_i) -A_i * fee)
+        fn out_given_in(
+            amount_token_in: Balance,
+            balance_token_in: Balance,
+            balance_token_out: Balance,
+            swap_fee_percentage: u128,
+        ) -> Result<Balance, DexError> {
+            let op0 = amount_token_in
+                .checked_mul(swap_fee_percentage)
+                .ok_or(DexError::Arithmethic)?;
+
+            let op1 = balance_token_in
+                .checked_add(amount_token_in)
+                .and_then(|result| result.checked_mul(100))
+                .ok_or(DexError::Arithmethic)?;
+
+            let op2 = op1.checked_sub(op0).ok_or(DexError::Arithmethic)?;
+
+            let op3 = balance_token_in
+                .checked_mul(balance_token_out)
+                .and_then(|result| result.checked_mul(100))
+                .ok_or(DexError::Arithmethic)?;
+
+            let op4 = op3.checked_div(op2).ok_or(DexError::Arithmethic)?;
+
+            balance_token_out
+                .checked_sub(op4)
+                .ok_or(DexError::Arithmethic)
+        }
+
+        fn access_control_error_handler(role: Role) -> DexError {
+            DexError::MissingRole(role)
+        }
+
+        fn cross_contract_call_error_handler(why: InkEnvError) -> DexError {
+            DexError::CrossContractCall(format!("Calling access control has failed: {:?}", why))
+        }
+
+        fn check_role(&self, account: AccountId, role: Role) -> Result<(), DexError>
+        where
+            Self: AccessControlled,
+        {
+            <Self as AccessControlled>::check_role(
+                self.access_control,
+                account,
+                role,
+                Self::cross_contract_call_error_handler,
+                Self::access_control_error_handler,
+            )
+        }
+
+        fn emit_event<EE>(emitter: EE, event: Event)
+        where
+            EE: EmitEvent<SimpleDex>,
+        {
+            emitter.emit_event(event);
+        }
+    }
+}
diff --git a/contracts/ticket_token/Cargo.lock b/contracts/ticket_token/Cargo.lock
index a41adcd8fe..cfd660507d 100644
--- a/contracts/ticket_token/Cargo.lock
+++ b/contracts/ticket_token/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "access_control"
-version = "0.1.0"
+version = "1.0.0"
 dependencies = [
  "ink_env",
  "ink_lang",
diff --git a/contracts/ticket_token/lib.rs b/contracts/ticket_token/lib.rs
index 07ffd2b7d6..d4706d41fa 100644
--- a/contracts/ticket_token/lib.rs
+++ b/contracts/ticket_token/lib.rs
@@ -5,7 +5,7 @@ pub use crate::ticket_token::{BALANCE_OF_SELECTOR, TRANSFER_FROM_SELECTOR, TRANS
 
 #[openbrush::contract]
 pub mod ticket_token {
-    use access_control::{traits::AccessControlled, Role, ACCESS_CONTROL_PUBKEY};
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
     use ink_env::Error as InkEnvError;
     use ink_lang::{
         codegen::{EmitEvent, Env},
diff --git a/contracts/wrapped_azero/Cargo.lock b/contracts/wrapped_azero/Cargo.lock
new file mode 100644
index 0000000000..005cc5779a
--- /dev/null
+++ b/contracts/wrapped_azero/Cargo.lock
@@ -0,0 +1,1008 @@
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+ "ink_metadata",
+ "ink_prelude",
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+ "num-traits",
+ "openbrush",
+ "parity-scale-codec",
+ "scale-info",
+]
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diff --git a/contracts/wrapped_azero/Cargo.toml b/contracts/wrapped_azero/Cargo.toml
new file mode 100644
index 0000000000..0894b27252
--- /dev/null
+++ b/contracts/wrapped_azero/Cargo.toml
@@ -0,0 +1,52 @@
+[package]
+name = "wrapped_azero"
+version = "1.0.0"
+authors = ["Cardinal Cryptography"]
+edition = "2021"
+license = "Apache 2.0"
+
+[dependencies]
+ink_primitives = { version = "~3.3.0", default-features = false }
+ink_metadata = { version = "~3.3.0", default-features = false, features = ["derive"], optional = true }
+ink_env = { version = "~3.3.0", default-features = false }
+ink_storage = { version = "~3.3.0", default-features = false }
+ink_lang = { version = "~3.3.0", default-features = false }
+ink_prelude = { version = "~3.3.0", default-features = false }
+ink_engine = { version = "~3.3.0", default-features = false, optional = true }
+
+scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
+scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
+
+num-traits = { version = "0.2", default-features = false }
+openbrush = { git = "https://github.com/Supercolony-net/openbrush-contracts.git", rev = "8a20f95", default-features = false, features = ["psp22"] }
+access_control = { path = "../access_control", default-features = false, features = ["ink-as-dependency"] }
+
+[lib]
+name = "wrapped_azero"
+path = "lib.rs"
+crate-type = [
+    # Used for normal contract Wasm blobs.
+    "cdylib",
+    # Used for ABI generation.
+    # "rlib",    
+]
+
+[features]
+default = ["std"]
+std = [
+    "num-traits/std",   
+    "ink_env/std",
+    "ink_lang/std",
+    "ink_metadata",
+    "ink_metadata/std",
+    "ink_primitives/std",
+    "ink_storage/std",
+    "openbrush/std",
+    "scale-info",
+    "scale-info/std",
+    "scale/std",
+]
+ink-as-dependency = []
+
+[profile.dev]
+codegen-units = 16
diff --git a/contracts/wrapped_azero/lib.rs b/contracts/wrapped_azero/lib.rs
new file mode 100644
index 0000000000..77c490ff8c
--- /dev/null
+++ b/contracts/wrapped_azero/lib.rs
@@ -0,0 +1,252 @@
+#![cfg_attr(not(feature = "std"), no_std)]
+#![feature(min_specialization)]
+
+pub use crate::wrapped_azero::{
+    ALLOWANCE_SELECTOR, BALANCE_OF_SELECTOR, TRANSFER_FROM_SELECTOR, TRANSFER_SELECTOR,
+};
+
+#[openbrush::contract]
+pub mod wrapped_azero {
+    use access_control::{roles::Role, traits::AccessControlled, ACCESS_CONTROL_PUBKEY};
+    use ink_env::Error as InkEnvError;
+    use ink_lang::{
+        codegen::{EmitEvent, Env},
+        reflect::ContractEventBase,
+    };
+    use ink_prelude::{format, string::String};
+    use ink_storage::traits::SpreadAllocate;
+    use num_traits::identities::Zero;
+    use openbrush::{
+        contracts::psp22::{extensions::metadata::*, Internal},
+        traits::Storage,
+    };
+
+    pub const BALANCE_OF_SELECTOR: [u8; 4] = [0x65, 0x68, 0x38, 0x2f];
+    pub const TRANSFER_SELECTOR: [u8; 4] = [0xdb, 0x20, 0xf9, 0xf5];
+    pub const TRANSFER_FROM_SELECTOR: [u8; 4] = [0x54, 0xb3, 0xc7, 0x6e];
+    pub const ALLOWANCE_SELECTOR: [u8; 4] = [0x4d, 0x47, 0xd9, 0x21];
+
+    #[ink(storage)]
+    #[derive(Default, SpreadAllocate, Storage)]
+    pub struct WrappedAzero {
+        #[storage_field]
+        psp22: psp22::Data,
+        #[storage_field]
+        metadata: metadata::Data,
+        /// access control contract
+        access_control: AccountId,
+    }
+
+    impl PSP22 for WrappedAzero {}
+
+    impl PSP22Metadata for WrappedAzero {}
+
+    // emit events
+    // https://github.com/w3f/PSPs/blob/master/PSPs/psp-22.md
+    impl Internal for WrappedAzero {
+        fn _emit_transfer_event(
+            &self,
+            _from: Option<AccountId>,
+            _to: Option<AccountId>,
+            _amount: Balance,
+        ) {
+            WrappedAzero::emit_event(
+                self.env(),
+                Event::Transfer(Transfer {
+                    from: _from,
+                    to: _to,
+                    value: _amount,
+                }),
+            );
+        }
+
+        fn _emit_approval_event(&self, _owner: AccountId, _spender: AccountId, _amount: Balance) {
+            WrappedAzero::emit_event(
+                self.env(),
+                Event::Approval(Approval {
+                    owner: _owner,
+                    spender: _spender,
+                    value: _amount,
+                }),
+            );
+        }
+    }
+
+    impl AccessControlled for WrappedAzero {
+        type ContractError = PSP22Error;
+    }
+
+    /// Result type
+    pub type Result<T> = core::result::Result<T, PSP22Error>;
+    /// Event type
+    pub type Event = <WrappedAzero as ContractEventBase>::Type;
+
+    /// Event emitted when a token transfer occurs.
+    #[ink(event)]
+    #[derive(Debug)]
+    pub struct Transfer {
+        #[ink(topic)]
+        pub from: Option<AccountId>,
+        #[ink(topic)]
+        pub to: Option<AccountId>,
+        pub value: Balance,
+    }
+
+    /// Event emitted when an approval occurs that `spender` is allowed to withdraw
+    /// up to the amount of `value` tokens from `owner`.
+    #[ink(event)]
+    #[derive(Debug)]
+    pub struct Approval {
+        #[ink(topic)]
+        owner: AccountId,
+        #[ink(topic)]
+        spender: AccountId,
+        value: Balance,
+    }
+
+    #[ink(event)]
+    #[derive(Debug)]
+    pub struct Wrapped {
+        caller: AccountId,
+        amount: Balance,
+    }
+
+    #[ink(event)]
+    #[derive(Debug)]
+    pub struct UnWrapped {
+        caller: AccountId,
+        amount: Balance,
+    }
+
+    impl WrappedAzero {
+        /// Creates a new token
+        ///
+        /// The token will have its name and symbol set in metadata to the specified values.
+        /// Decimals are fixed at 12.
+        ///
+        /// Will revert if called from an account without a proper role
+        #[ink(constructor)]
+        pub fn new(name: String, symbol: String) -> Self {
+            let caller = Self::env().caller();
+            let code_hash = Self::env()
+                .own_code_hash()
+                .expect("Called new on a contract with no code hash");
+
+            let role_check = <Self as AccessControlled>::check_role(
+                AccountId::from(ACCESS_CONTROL_PUBKEY),
+                caller,
+                Role::Initializer(code_hash),
+                Self::cross_contract_call_error_handler,
+                Self::access_control_error_handler,
+            );
+
+            match role_check {
+                Ok(_) => ink_lang::codegen::initialize_contract(|instance: &mut WrappedAzero| {
+                    instance.metadata.name = Some(name);
+                    instance.metadata.symbol = Some(symbol);
+                    instance.metadata.decimals = 12; // same as AZERO
+
+                    instance.access_control = AccountId::from(ACCESS_CONTROL_PUBKEY);
+                }),
+                Err(why) => panic!("Could not initialize the contract {:?}", why),
+            }
+        }
+
+        /// Wraps the transferred amount of native token and mints it to the callers account
+        #[ink(message, payable)]
+        pub fn wrap(&mut self) -> Result<()> {
+            let caller = self.env().caller();
+            let amount = self.env().transferred_value();
+            if !amount.eq(&Balance::zero()) {
+                self._mint(caller, amount)?;
+                Self::emit_event(self.env(), Event::Wrapped(Wrapped { caller, amount }));
+            }
+
+            Ok(())
+        }
+
+        /// Unwraps a specified amount
+        #[ink(message)]
+        pub fn unwrap(&mut self, amount: Balance) -> Result<()> {
+            if amount.eq(&Balance::zero()) {
+                return Ok(());
+            }
+
+            let caller = self.env().caller();
+
+            // burn the token form the caller, will fail if the calling account doesn't have enough balance
+            self._burn_from(caller, amount)?;
+
+            // return the native token to the caller
+            self.env()
+                .transfer(caller, amount)
+                .map_err(|why| PSP22Error::Custom(format!("Native transfer failed: {:?}", why)))?;
+            Self::emit_event(self.env(), Event::UnWrapped(UnWrapped { caller, amount }));
+
+            Ok(())
+        }
+
+        /// Terminates the contract.
+        ///
+        /// can only be called by the contract's Owner
+        #[ink(message)]
+        pub fn terminate(&mut self) -> Result<()> {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+            let required_role = Role::Owner(this);
+
+            self.check_role(caller, required_role)?;
+            self.env().terminate_contract(caller)
+        }
+
+        /// Returns the contract's access control contract address
+        #[ink(message)]
+        pub fn access_control(&self) -> AccountId {
+            self.access_control
+        }
+
+        /// Sets new access control contract address
+        ///
+        /// Can only be called by the contract's Owner
+        #[ink(message)]
+        pub fn set_access_control(&mut self, access_control: AccountId) -> Result<()> {
+            let caller = self.env().caller();
+            let this = self.env().account_id();
+
+            self.check_role(caller, Role::Owner(this))?;
+
+            self.access_control = access_control;
+            Ok(())
+        }
+
+        /// Returns own code hash
+        #[ink(message)]
+        pub fn code_hash(&self) -> Result<Hash> {
+            Self::env().own_code_hash().map_err(|why| {
+                PSP22Error::Custom(format!("Can't retrieve own code hash: {:?}", why))
+            })
+        }
+
+        pub fn emit_event<EE: EmitEvent<Self>>(emitter: EE, event: Event) {
+            emitter.emit_event(event);
+        }
+
+        fn access_control_error_handler(role: Role) -> PSP22Error {
+            PSP22Error::Custom(format!("MissingRole:{:?}", role))
+        }
+
+        fn cross_contract_call_error_handler(why: InkEnvError) -> PSP22Error {
+            PSP22Error::Custom(format!("Calling access control has failed: {:?}", why))
+        }
+
+        fn check_role(&self, account: AccountId, role: Role) -> Result<()> {
+            <Self as AccessControlled>::check_role(
+                self.access_control,
+                account,
+                role,
+                Self::cross_contract_call_error_handler,
+                Self::access_control_error_handler,
+            )
+        }
+    }
+}