diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3dd8a6e..f6fe81e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
 
       # Install dependencies
       - name: Install dependencies
-        run: npm install
+        run: npm i
 
       # Run linter
       - name: Run Linter
@@ -29,7 +29,7 @@ jobs:
 
       # Check Prettier
       - name: Check Prettier
-        run: npm run prettier-check
+        run: npm run prettier
 
       # Run tests
       - name: Run Tests
diff --git a/README.md b/README.md
index 1e7e0c5..4d317e4 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,17 @@
 # coretime-utils
 
-An npm package containing types and constants that are commonly reused in regarding to Coretime
+An npm package containing types and constants that are commonly reused in relation to Coretime.
+
+### Usage
+
+Installation:
+
+```
+npm i coretime-utils
+```
+
+Types can be imported directly from the package, e.g.
+
+```js
+import { CoreMask } from 'coretime-utils';
+```
diff --git a/package-lock.json b/package-lock.json
index 90177b1..9bf6841 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,13 +1,18 @@
 {
   "name": "coretime-utils",
-  "version": "1.0.0",
+  "version": "0.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "coretime-utils",
-      "version": "1.0.0",
+      "version": "0.1.1",
       "license": "ISC",
+      "dependencies": {
+        "@polkadot/api": "^10.11.2",
+        "@polkadot/types": "^10.11.2",
+        "@polkadot/util": "^12.6.2"
+      },
       "devDependencies": {
         "@types/jest": "^29.5.11",
         "@typescript-eslint/eslint-plugin": "^6.18.1",
@@ -1281,6 +1286,28 @@
         "@jridgewell/sourcemap-codec": "^1.4.10"
       }
     },
+    "node_modules/@noble/curves": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.3.0.tgz",
+      "integrity": "sha512-t01iSXPuN+Eqzb4eBX0S5oubSqXbK/xXa1Ne18Hj8f9pStxztHCE2gfboSp/dZRLSqfuLpRK2nDXDK+W9puocA==",
+      "dependencies": {
+        "@noble/hashes": "1.3.3"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@noble/hashes": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.3.tgz",
+      "integrity": "sha512-V7/fPHgl+jsVPXqqeOzT8egNj2iBIVt+ECeMMG8TdcnTikP3oaBtUVqpT/gYCR68aEBJSF+XbYUxStjbFMqIIA==",
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -1316,6 +1343,492 @@
         "node": ">= 8"
       }
     },
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+      "dependencies": {
+        "@polkadot/api-augment": "10.11.2",
+        "@polkadot/api-base": "10.11.2",
+        "@polkadot/api-derive": "10.11.2",
+        "@polkadot/keyring": "^12.6.2",
+        "@polkadot/rpc-augment": "10.11.2",
+        "@polkadot/rpc-core": "10.11.2",
+        "@polkadot/rpc-provider": "10.11.2",
+        "@polkadot/types": "10.11.2",
+        "@polkadot/types-augment": "10.11.2",
+        "@polkadot/types-codec": "10.11.2",
+        "@polkadot/types-create": "10.11.2",
+        "@polkadot/types-known": "10.11.2",
+        "@polkadot/util": "^12.6.2",
+        "@polkadot/util-crypto": "^12.6.2",
+        "eventemitter3": "^5.0.1",
+        "rxjs": "^7.8.1",
+        "tslib": "^2.6.2"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/api-augment": {
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     "node_modules/update-browserslist-db": {
       "version": "1.0.13",
@@ -4889,6 +5570,14 @@
         "makeerror": "1.0.12"
       }
     },
+    "node_modules/web-streams-polyfill": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.2.tgz",
+      "integrity": "sha512-3pRGuxRF5gpuZc0W+EpwQRmCD7gRqcDOMt688KmdlDAgAyaB1XlN0zq2njfDNm44XVdIouE7pZ6GzbdyH47uIQ==",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -4940,6 +5629,26 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
+    "node_modules/ws": {
+      "version": "8.16.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.16.0.tgz",
+      "integrity": "sha512-HS0c//TP7Ina87TfiPUz1rQzMhHrl/SG2guqRcTOIUYD2q8uhUdNHZYJUaQ8aTGPzCh+c6oawMKW35nFl1dxyQ==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index e582a50..5f21e0c 100644
--- a/package.json
+++ b/package.json
@@ -1,14 +1,15 @@
 {
   "name": "coretime-utils",
-  "version": "0.1.0",
+  "version": "0.1.9",
   "description": "An npm package containing types and constants that are commonly reused in regarding Coretime.",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "dist/cjs/index.js",
+  "types": "dist/cjs/index.d.ts",
   "scripts": {
-    "build": "tsc",
-    "dev": "npx ts-node src/main.ts",
+    "build:cjs": "tsc -p tsconfig.cjs.json",
+    "build:esm": "tsc -p tsconfig.esm.json",
+    "build": "npm run build:cjs && npm run build:esm",
     "prettier": "prettier --write .",
-    "lint": "eslint '**/*.ts'",
+    "lint": "eslint 'src/**/*.ts'",
     "test": "jest"
   },
   "files": [
@@ -27,5 +28,8 @@
     "ts-jest": "^29.1.1",
     "ts-node": "^10.9.2",
     "typescript": "^5.3.3"
+  },
+  "dependencies": {
+    "@polkadot/util": "^12.6.2"
   }
 }
diff --git a/src/coreMask.ts b/src/coreMask.ts
index 0ecf8b9..85f6226 100644
--- a/src/coreMask.ts
+++ b/src/coreMask.ts
@@ -47,7 +47,7 @@ export class CoreMask {
     return new CoreMask(`0x${hexMask}`);
   }
 
-  countZeros(): number {
+  public countZeros(): number {
     let count = 0;
     for (let i = 2; i < this.mask.length; ++i) {
       let v = parseInt(this.mask.slice(i, i + 1), 16);
@@ -59,7 +59,7 @@ export class CoreMask {
     return count;
   }
 
-  countOnes(): number {
+  public countOnes(): number {
     let count = 0;
     for (let i = 2; i < this.mask.length; ++i) {
       let v = parseInt(this.mask.slice(i, i + 1), 16);
@@ -71,7 +71,7 @@ export class CoreMask {
     return count;
   }
 
-  toBin(): string {
+  public toBin(): string {
     let bin = '';
     for (let i = 2; i < this.mask.length; ++i) {
       const v = parseInt(this.mask.slice(i, i + 1), 16);
diff --git a/src/index.ts b/src/index.ts
index fe89e2a..f19b00e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,2 +1,3 @@
 export * from './coreMask';
+export * from './region';
 export * from './types';
diff --git a/src/region.ts b/src/region.ts
new file mode 100644
index 0000000..1142206
--- /dev/null
+++ b/src/region.ts
@@ -0,0 +1,122 @@
+import { CoreMask, CoreIndex, Timeslice, Balance } from '.';
+import { BN } from '@polkadot/util';
+
+export type RegionId = {
+  // The timeslice at which the region starts.
+  begin: Timeslice;
+  // The index of the relay chain Core on which this Region will be scheduled.
+  core: CoreIndex;
+  // The regularity parts in which this Region will be scheduled.
+  mask: CoreMask;
+};
+
+export type RegionRecord = {
+  // The end of the Region.
+  end: Timeslice;
+  // The owner of the Region.
+  owner: string;
+  // The amount paid to Polkadot for this Region, or `None` if renewal is not allowed.
+  paid: null | Balance;
+};
+
+export enum RegionOrigin {
+  CORETIME_CHAIN,
+  CONTRACTS_CHAIN,
+}
+
+export class Region {
+  private regionId: RegionId;
+  private regionRecord: RegionRecord;
+
+  /**
+   * Constructs a new Region instance.
+   * @param regionId The unique identifier of the region.
+   * @param regionRecord The record details of the region.
+   */
+  constructor(regionId: RegionId, regionRecord: RegionRecord) {
+    this.regionId = regionId;
+    this.regionRecord = regionRecord;
+  }
+
+  /**
+   * RegionId of the Region.
+   * @returns The RegionId of the current Region instance.
+   */
+  public getRegionId(): RegionId {
+    return this.regionId;
+  }
+
+  /**
+   * RegionRecord of the Region.
+   * @returns The RegionRecord of the current Region instance.
+   */
+  public getRegionRecord(): RegionRecord {
+    return this.regionRecord;
+  }
+
+  /**
+   * Gets the beginning timeslice of the region.
+   * @returns The starting timeslice.
+   */
+  public getBegin(): Timeslice {
+    return this.regionId.begin;
+  }
+
+  /**
+   * Gets the core index of the region.
+   * @returns The core index.
+   */
+  public getCore(): CoreIndex {
+    return this.regionId.core;
+  }
+
+  /**
+   * Gets the mask for the region scheduling.
+   * @returns The core mask.
+   */
+  public getMask(): CoreMask {
+    return this.regionId.mask;
+  }
+
+  /**
+   * Gets the ending timeslice of the region.
+   * @returns The ending timeslice.
+   */
+  public getEnd(): Timeslice {
+    return this.regionRecord.end;
+  }
+
+  /**
+   * Gets the owner of the region.
+   * @returns The owner's identifier.
+   */
+  public getOwner(): string {
+    return this.regionRecord.owner;
+  }
+
+  /**
+   * Gets the amount paid for the region, or null if renewal is not allowed.
+   * @returns The paid balance or null.
+   */
+  public getPaid(): null | Balance {
+    return this.regionRecord.paid;
+  }
+
+  /**
+   * Encodes the `regionId` into a BigNumber (BN) format. This method is used for
+   * interactions with smart contracts or when conducting cross-chain transfers, where
+   * `regionId` needs to be represented as a u128.
+   *
+   * @param api The API object used to encode the regionId fields.
+   * @returns The encoded regionId as a BigNumber (BN)
+   */
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  getEncodedRegionId(api: any): BN {
+    const encodedBegin = api.createType('u32', this.regionId.begin).toHex().substring(2);
+    const encodedCore = api.createType('u16', this.regionId.core).toHex().substring(2);
+
+    const rawRegionId = encodedBegin + encodedCore + this.regionId.mask.getMask().substring(2);
+
+    return new BN(rawRegionId, 16);
+  }
+}
diff --git a/src/types.ts b/src/types.ts
index 8e7c9f7..efc6c26 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,27 +1,8 @@
-import { CoreMask } from '.';
-
 export type Timeslice = number;
 export type CoreIndex = number;
 
 export type Balance = number;
 
-export type RegionId = {
-  begin: Timeslice;
-  core: CoreIndex;
-  mask: CoreMask;
-};
-
-export type RegionRecord = {
-  end: Timeslice;
-  owner: string;
-  paid: null | Balance;
-};
-
-export type Region = {
-  regionId: RegionId;
-  regionRecord: RegionRecord;
-};
-
 export const Id = {
   _enum: {
     U8: 'u8',
diff --git a/tsconfig.cjs.json b/tsconfig.cjs.json
new file mode 100644
index 0000000..8ab4792
--- /dev/null
+++ b/tsconfig.cjs.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "CommonJS",
+    "outDir": "./dist/cjs"
+  }
+}
diff --git a/tsconfig.esm.json b/tsconfig.esm.json
new file mode 100644
index 0000000..48e68b0
--- /dev/null
+++ b/tsconfig.esm.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "ESNext",
+    "outDir": "./dist/esm"
+  }
+}
diff --git a/tsconfig.json b/tsconfig.json
index 17912c7..266a624 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,10 @@
   "compilerOptions": {
     "outDir": "./dist",
     "declaration": true,
-    "target": "ES2020"
-  }
+    "target": "ES2020",
+    "rootDir": "./src/",
+    "moduleResolution": "Node",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["src/**/*"]
 }