diff --git a/types/bchaddrjs/bchaddrjs-tests.ts b/types/bchaddrjs/bchaddrjs-tests.ts
new file mode 100644
index 0000000000..ce242706c7
--- /dev/null
+++ b/types/bchaddrjs/bchaddrjs-tests.ts
@@ -0,0 +1,36 @@
+import * as bchaddr from 'bchaddrjs';
+
+const formatLegacy: string = bchaddr.Format.Legacy;
+const formatBitpay: string = bchaddr.Format.Bitpay;
+const formatCashaddr: string = bchaddr.Format.Cashaddr;
+const networkMainnet: string = bchaddr.Network.Mainnet;
+const networkTestnet: string = bchaddr.Network.Testnet;
+const typeP2PKH: string = bchaddr.Type.P2PKH;
+const typeP2SH: string = bchaddr.Type.P2SH;
+const someAddress = 'qph5kuz78czq00e3t85ugpgd7xmer5kr7c5f6jdpwk';
+const someFormat: string = bchaddr.detectAddressFormat(someAddress);
+const someNetwork: string = bchaddr.detectAddressNetwork(someAddress);
+const someType: string = bchaddr.detectAddressType(someAddress);
+let someBoolean: boolean;
+someBoolean = bchaddr.isValidAddress(someAddress);
+someBoolean = bchaddr.isLegacyAddress(someAddress);
+someBoolean = bchaddr.isBitpayAddress(someAddress);
+someBoolean = bchaddr.isCashAddress(someAddress);
+someBoolean = bchaddr.isMainnetAddress(someAddress);
+someBoolean = bchaddr.isTestnetAddress(someAddress);
+someBoolean = bchaddr.isP2PKHAddress(someAddress);
+someBoolean = bchaddr.isP2SHAddress(someAddress);
+let someOtherAddress: string;
+someOtherAddress = bchaddr.toLegacyAddress(someAddress);
+someOtherAddress = bchaddr.toBitpayAddress(someAddress);
+someOtherAddress = bchaddr.toCashAddress(someAddress);
+const someInvalidInput = 'abcdefghijklmn';
+try {
+    bchaddr.detectAddressFormat(someInvalidInput);
+} catch (err) {
+    if (err instanceof bchaddr.InvalidAddressError) {
+        // As expected.
+    } else {
+        throw new bchaddr.InvalidAddressError();
+    }
+}
diff --git a/types/bchaddrjs/index.d.ts b/types/bchaddrjs/index.d.ts
new file mode 100644
index 0000000000..07a61e7f64
--- /dev/null
+++ b/types/bchaddrjs/index.d.ts
@@ -0,0 +1,133 @@
+// Type definitions for bchaddrjs 0.4
+// Project: https://github.com/bitcoincashjs/bchaddrjs#readme
+// Definitions by: Emilio Almansi <https://github.com/ealmansi>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export as namespace bchaddr;
+
+/**
+ * Supported Bitcoin Cash address formats.
+ */
+export namespace Format {
+    const Legacy: string;
+    const Bitpay: string;
+    const Cashaddr: string;
+}
+
+/**
+ * Supported networks.
+ */
+export namespace Network {
+    const Mainnet: string;
+    const Testnet: string;
+}
+
+/**
+ * Supported address types.
+ */
+export namespace Type {
+    const P2PKH: string;
+    const P2SH: string;
+}
+
+/**
+ * Returns a boolean indicating whether the given input is a valid Bitcoin Cash address.
+ * @param input - Any input to check for validity.
+ */
+export function isValidAddress(input: any): boolean;
+
+/**
+ * Detects what is the given address' format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function detectAddressFormat(address: string): string;
+
+/**
+ * Detects what is the given address' network.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function detectAddressNetwork(address: string): string;
+
+/**
+ * Detects what is the given address' type.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function detectAddressType(address: string): string;
+
+/**
+ * Translates the given address into legacy format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function toLegacyAddress(address: string): string;
+
+/**
+ * Translates the given address into bitpay format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function toBitpayAddress(address: string): string;
+
+/**
+ * Translates the given address into cashaddr format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function toCashAddress(address: string): string;
+
+/**
+ * Returns a boolean indicating whether the address is in legacy format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isLegacyAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is in bitpay format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isBitpayAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is in cashaddr format.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isCashAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is a mainnet address.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isMainnetAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is a testnet address.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isTestnetAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is a p2pkh address.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isP2PKHAddress(address: string): boolean;
+
+/**
+ * Returns a boolean indicating whether the address is a p2sh address.
+ * @param address - A valid Bitcoin Cash address in any format.
+ * @throws {InvalidAddressError}
+ */
+export function isP2SHAddress(address: string): boolean;
+
+/**
+ * Error thrown when the address given as input is not a valid Bitcoin Cash address.
+ */
+export class InvalidAddressError extends Error { constructor(); }
diff --git a/types/bchaddrjs/tsconfig.json b/types/bchaddrjs/tsconfig.json
new file mode 100644
index 0000000000..acc91b1fc4
--- /dev/null
+++ b/types/bchaddrjs/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es5"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "bchaddrjs-tests.ts"
+    ]
+}
diff --git a/types/bchaddrjs/tslint.json b/types/bchaddrjs/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/bchaddrjs/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }