diff --git a/src.ts/ethers.ts b/src.ts/ethers.ts
index f9c4274d..f3cba407 100644
--- a/src.ts/ethers.ts
+++ b/src.ts/ethers.ts
@@ -2,29 +2,17 @@
 
 import { Contract, Interface } from './contracts';
 
-import {
-    Provider,
-    getDefaultProvider,
-
-    FallbackProvider,
-
-    EtherscanProvider,
-    InfuraProvider,
-    JsonRpcProvider,
-    Web3Provider,
-
-    IpcProvider,
-} from './providers';
-
-import { JsonRpcSigner } from './providers/json-rpc-provider';
+import * as providers from './providers';
 
 import { HDNode, SigningKey, Wallet } from './wallet';
 
+import { constants } from './utils/constants';
+import * as errors from './utils/errors';
 import * as utils from './utils';
 
-import * as wordlists from './wordlists';
+import * as types from './types';
 
-import * as errors from './utils/errors';
+import * as wordlists from './wordlists';
 
 // This is empty in node, and used by browserify to inject extra goodies
 import { platform } from './utils/shims';
@@ -32,183 +20,13 @@ import { platform } from './utils/shims';
 // This is generated by "npm run dist"
 import { version } from './_version';
 
-///////////////////////////////
-// Imported Abstracts
-
-import { Provider as _AbstractProvider } from './providers/abstract-provider';
-import { Signer as _AbstractSigner } from './wallet/abstract-signer';
-
-///////////////////////////////
-// Imported Types
-
-import {
-    ContractFunction as _ContractFunction,
-    Event as _Event,
-    EventFilter as _EventFilter
-} from './contracts/contract';
-
-import {
-    Indexed as _Indexed,
-
-    DeployDescription as _DeplyDescription,
-    EventDescription as _EventDescription,
-    FunctionDescription as _FunctionDescription,
-    LogDescription as _LogDescription,
-    TransactionDescription as _TransactionDescription
-} from './contracts/interface';
-
-import {
-    Block as _Block,
-    BlockTag as _BlockTag,
-    EventType as _EventType,
-    Filter as _Filter,
-    Log as _Log,
-    Listener as _Listener,
-    TransactionReceipt as _TransactionReceipt,
-    TransactionRequest as _TransactionRequest,
-    TransactionResponse as _TransactionResponse,
-} from './providers/abstract-provider';
-
-import { AsyncSendable as _AsyncSendable } from './providers/web3-provider';
-
-import {
-    CoerceFunc as _CoerceFunc,
-    EventFragment as _EventFragment,
-    FunctionFragment as _FunctionFragment,
-    ParamType as _ParamType
-} from './utils/abi-coder';
-
-import { BigNumberish as _BigNumberish } from './utils/bignumber';
-
-import {
-    Arrayish as _Arrayish,
-    Hexable as _Hexable,
-    Signature as _Signature
-} from './utils/bytes';
-
-import { SupportedAlgorithms as _SupportedAlgorithms } from './utils/hmac';
-
-import {
-    Network as _Network,
-    Networkish as _Networkish
-} from './utils/networks';
-
-import {
-    Transaction as _Transaction,
-    UnsignedTransaction as _UnsignedTransaction
-} from './utils/transaction';
-
-import { UnicodeNormalizationForm as _UnicodeNotmalizationForm } from './utils/utf8';
-
-import {
-    ConnectionInfo as _ConnectionInfo,
-    OnceBlockable as _OnceBlockable,
-    PollOptions as _PollOptions
-} from './utils/web';
-
-import {
-    EncryptOptions as _EncryptOptions,
-    ProgressCallback as _ProgressCallback
-} from './wallet/secret-storage';
-
-import { Wordlist as _Wordlist } from './wordlists/wordlist';
-
-///////////////////////////////
-// Exported Types
-
-module types {
-    export const AbstractSigner = _AbstractSigner;
-    export const AbstractProvider = _AbstractProvider;
-
-    export type SignerOrProvider = _AbstractSigner | _AbstractProvider;
-
-    // ./contracts/contract
-    export type ContractFunction = _ContractFunction;
-    export type EventFilter = _EventFilter;
-    export interface Event extends _Event { };
-
-    // ./contracts/interface
-    export interface Indexed extends _Indexed { };
-    export interface DeployDescription extends _DeplyDescription { };
-    export interface EventDescription extends _EventDescription { };
-    export interface FunctionDescription extends _FunctionDescription { };
-    export interface LogDescription extends _LogDescription { };
-    export interface TransactionDescription extends _TransactionDescription { };
-
-    // ./providers/abstract-provider
-    export type BlockTag = _BlockTag;
-    export type EventType =  _EventType;
-    export type Filter = _Filter;
-    export type Listener = _Listener;
-    export type TransactionRequest = _TransactionRequest;
-    export interface Block extends _Block { };
-    export interface Log extends _Log { };
-    export interface TransactionReceipt extends _TransactionReceipt { };
-    export interface TransactionResponse extends _TransactionResponse { }
-
-    // ./providers/web3-provider
-    export type AsyncSendable = _AsyncSendable;
-
-    // ./utils/abi-coder
-    export type CoerceFunc = _CoerceFunc;
-    export type EventFragment = _EventFragment;
-    export type FunctionFragment = _FunctionFragment;
-    export type ParamType = _ParamType;
-
-    // ./utils/bignumber
-    export type BigNumberish = _BigNumberish;
-
-    // ./utils/bytes
-    export type Arrayish = _Arrayish;
-    export type Hexable = _Hexable;
-    export type Signature = _Signature;
-
-    // ./utils/hmac
-    export const SupportedAlgorithms = _SupportedAlgorithms;
-
-    // ./utils/networks
-    export type Network = _Network;
-    export type Networkish = _Networkish;
-
-    // ./utils/transaction
-    export type UnsignedTransaction = _UnsignedTransaction;
-    export interface Transaction extends _Transaction { };
-
-    // ./utils/utf8
-    export const UnicodeNormalizationForm = _UnicodeNotmalizationForm;
-
-    // ./utils/web
-    export type ConnectionInfo = _ConnectionInfo;
-    export interface OnceBlockable extends _OnceBlockable { };
-    export type PollOptions = _PollOptions;
-
-    // ./wallet/secret-storage
-    export type EncryptOptions = _EncryptOptions;
-    export type ProgressCallback = _ProgressCallback;
-
-    // ./wordlists/wordlist
-    export const Wordlist = _Wordlist;
+function getDefaultProvider(network?: types.Network | string): providers.BaseProvider {
+    return new providers.FallbackProvider([
+        new providers.InfuraProvider(network),
+        new providers.EtherscanProvider(network),
+    ]);
 }
 
-///////////////////////////////
-
-const constants = utils.constants;
-
-const providers = {
-    Provider,
-
-    FallbackProvider,
-
-    EtherscanProvider,
-    InfuraProvider,
-
-    IpcProvider,
-    JsonRpcProvider,
-    Web3Provider,
-
-    JsonRpcSigner
-};
-
 export {
     Wallet,
 
diff --git a/src.ts/providers/provider.ts b/src.ts/providers/base-provider.ts
similarity index 93%
rename from src.ts/providers/provider.ts
rename to src.ts/providers/base-provider.ts
index e415d5b4..5cb86f4a 100644
--- a/src.ts/providers/provider.ts
+++ b/src.ts/providers/base-provider.ts
@@ -15,7 +15,7 @@ import * as errors from '../utils/errors';
 
 ///////////////////////////////
 // Imported Abstracts
-import { Provider as AbstractProvider } from './abstract-provider';
+import { Provider } from './abstract-provider';
 
 
 ///////////////////////////////
@@ -441,84 +441,6 @@ function getEventTag(eventName: EventType): string {
 // Provider Object
 
 
-/* @TODO:
-type Event = {
-   eventName: string,
-   listener: any, // @TODO: Function any: any
-   type: string,
-}
-*/
-
-// @TODO: Perhaps allow a SignDigestAsyncFunc?
-
-// Enable a simple signing function and provider to provide a full Signer
-/*
-export type SignDigestFunc = (digest: string) => Promise<Signature>;
-export class ProviderSigner extends Signer {
-    readonly provider: Provider;
-    readonly signDigest: SignDigestFunc;
-
-    private _addressPromise: Promise<string>;
-
-    constructor(address: string | Promise<string>, signDigest: SignDigestFunc, provider: Provider) {
-        super();
-        errors.checkNew(this, ProviderSigner);
-        defineReadOnly(this, '_addressPromise', Promise.resolve(address));
-        defineReadOnly(this, 'signDigest', signDigest);
-        defineReadOnly(this, 'provider', provider);
-    }
-
-    getAddress(): Promise<string> {
-        return this._addressPromise;
-    }
-
-    signMessage(message: Arrayish | string): Promise<string> {
-        return this.signDigest(arrayify(hashMessage(message))).then((signature) => {
-            return joinSignature(signature);
-        });
-    }
-
-    sendTransaction(transaction: TransactionRequest): Promise<TransactionResponse> {
-        transaction = shallowCopy(transaction);
-
-        if (transaction.chainId == null) {
-            transaction.chainId = this.provider.getNetwork().then((network) => {
-                return network.chainId;
-            });
-        }
-
-        if (transaction.from == null) {
-            transaction.from = this.getAddress();
-        }
-
-        if (transaction.gasLimit == null) {
-            transaction.gasLimit = this.provider.estimateGas(transaction);
-        }
-
-        if (transaction.gasPrice == null) {
-            transaction.gasPrice = this.provider.getGasPrice();
-        }
-
-        return resolveProperties(transaction).then((tx) => {
-            let unsignedTx = serializeTransaction(tx);
-            return this.signDigest(keccak256(unsignedTx)).then((signature) => {
-                let signedTx = serializeTransaxction(tx, (ut) => {
-                    if (unsignedTx !== ut) { throw new Error('this should not happen'); }
-                    return signature;
-                });
-
-                return this._addressPromise.then((address) => {
-                    if (parseTransaction(signedTx).from !== address) {
-                        errors.throwError('signing address does not match expected address', errors.UNKNOWN_ERROR, { address: parseTransaction(signedTx).from, expectedAddress: address, signedTransaction: signedTx });
-                    }
-                    return this.provider.sendTransaction(signedTx);
-                });
-            });
-        });
-    }
-}
-*/
-
 /**
  *  EventType
  *   - "block"
@@ -536,7 +458,7 @@ type _Event = {
     tag: string;
 }
 
-export class Provider extends AbstractProvider {
+export class BaseProvider extends Provider {
     private _network: Network;
 
     private _events: Array<_Event>;
@@ -966,7 +888,7 @@ export class Provider extends AbstractProvider {
                             }
                             return undefined;
                         }
-                        return Provider.checkTransactionResponse(result);
+                        return BaseProvider.checkTransactionResponse(result);
                     });
                 }, { onceBlock: this });
             });
diff --git a/src.ts/providers/etherscan-provider.ts b/src.ts/providers/etherscan-provider.ts
index 6fb7d6e9..72deed8a 100644
--- a/src.ts/providers/etherscan-provider.ts
+++ b/src.ts/providers/etherscan-provider.ts
@@ -1,5 +1,5 @@
 
-import { Provider } from './provider';
+import { BaseProvider } from './base-provider';
 
 import { hexlify, hexStripZeros } from '../utils/bytes';
 import { defineReadOnly } from '../utils/properties';
@@ -74,7 +74,7 @@ function checkLogTag(blockTag: string): number | "latest" {
 }
 
 
-export class EtherscanProvider extends Provider{
+export class EtherscanProvider extends BaseProvider{
     readonly baseUrl: string;
     readonly apiKey: string;
     constructor(network?: Networkish, apiKey?: string) {
@@ -299,7 +299,7 @@ export class EtherscanProvider extends Provider{
                     if (tx.creates == null && tx.contractAddress != null) {
                         tx.creates = tx.contractAddress;
                     }
-                    let item = Provider.checkTransactionResponse(tx);
+                    let item = BaseProvider.checkTransactionResponse(tx);
                     if (tx.timeStamp) { item.timestamp = parseInt(tx.timeStamp); }
                     output.push(item);
                 });
diff --git a/src.ts/providers/fallback-provider.ts b/src.ts/providers/fallback-provider.ts
index 7aaf1e82..589daafe 100644
--- a/src.ts/providers/fallback-provider.ts
+++ b/src.ts/providers/fallback-provider.ts
@@ -1,6 +1,6 @@
 'use strict';
 
-import { Provider } from './provider';
+import { BaseProvider } from './base-provider';
 
 // Imported Types
 import { Network } from '../utils/networks';
@@ -44,10 +44,10 @@ function checkNetworks(networks: Array<Network>): boolean {
     return result;
 }
 
-export class FallbackProvider extends Provider {
-    private _providers: Array<Provider>;
+export class FallbackProvider extends BaseProvider {
+    private _providers: Array<BaseProvider>;
 
-    constructor(providers: Array<Provider>) {
+    constructor(providers: Array<BaseProvider>) {
 
         if (providers.length === 0) { throw new Error('no providers'); }
 
@@ -73,7 +73,7 @@ export class FallbackProvider extends Provider {
         this._providers = providers.slice(0);
     }
 
-    get providers(): Array<Provider> {
+    get providers(): Array<BaseProvider> {
         // Return a copy, so we don't get mutated
         return this._providers.slice(0);
     }
diff --git a/src.ts/providers/index.ts b/src.ts/providers/index.ts
index 281b24b5..11980925 100644
--- a/src.ts/providers/index.ts
+++ b/src.ts/providers/index.ts
@@ -1,6 +1,6 @@
 'use strict';
 
-import { Provider } from './provider';
+import { BaseProvider } from './base-provider';
 
 import { EtherscanProvider } from './etherscan-provider';
 import { FallbackProvider } from './fallback-provider';
@@ -12,27 +12,26 @@ import { Web3Provider } from './web3-provider';
 ///////////////////////////////
 // Imported Abstracts
 
-import { Provider as AbstractProvider } from './abstract-provider';
+//import { Provider as AbstractProvider } from './abstract-provider';
 
 ///////////////////////////////
 // Imported Types
 
-import { Network } from '../utils/networks';
+//import { Network } from '../utils/networks';
 
 ///////////////////////////////
 
+/*
 function getDefaultProvider(network?: Network | string): Provider {
     return new FallbackProvider([
         new InfuraProvider(network),
         new EtherscanProvider(network),
     ]);
 }
+*/
 
 export {
-    AbstractProvider,
-
-    Provider,
-    getDefaultProvider,
+    BaseProvider,
 
     FallbackProvider,
 
diff --git a/src.ts/providers/json-rpc-provider.ts b/src.ts/providers/json-rpc-provider.ts
index d31b22a8..197e2c42 100644
--- a/src.ts/providers/json-rpc-provider.ts
+++ b/src.ts/providers/json-rpc-provider.ts
@@ -2,7 +2,7 @@
 
 // See: https://github.com/ethereum/wiki/wiki/JSON-RPC
 
-import { Provider } from './provider';
+import { BaseProvider } from './base-provider';
 
 import { Signer } from '../wallet/abstract-signer';
 
@@ -161,7 +161,7 @@ export class JsonRpcSigner extends Signer {
     }
 }
 
-export class JsonRpcProvider extends Provider {
+export class JsonRpcProvider extends BaseProvider {
     readonly connection: ConnectionInfo;
 
     private _pendingFilter: Promise<number>;
diff --git a/src.ts/types.ts b/src.ts/types.ts
new file mode 100644
index 00000000..13e612ee
--- /dev/null
+++ b/src.ts/types.ts
@@ -0,0 +1,160 @@
+
+///////////////////////////////
+// Imported Abstracts
+
+import { Provider } from './providers/abstract-provider';
+import { Signer } from './wallet/abstract-signer';
+
+///////////////////////////////
+// Imported Types
+
+import {
+    ContractFunction,
+    Event,
+    EventFilter
+} from './contracts/contract';
+
+import {
+    Indexed,
+
+    DeployDescription,
+    EventDescription,
+    FunctionDescription,
+    LogDescription,
+    TransactionDescription
+} from './contracts/interface';
+
+import {
+    Block,
+    BlockTag,
+    EventType,
+    Filter,
+    Log,
+    Listener,
+    TransactionReceipt,
+    TransactionRequest,
+    TransactionResponse
+} from './providers/abstract-provider';
+
+import { AsyncSendable } from './providers/web3-provider';
+
+import {
+    CoerceFunc,
+    EventFragment,
+    FunctionFragment,
+    ParamType,
+} from './utils/abi-coder';
+
+import { BigNumberish } from './utils/bignumber';
+
+import {
+    Arrayish,
+    Hexable,
+    Signature
+} from './utils/bytes';
+
+import { SupportedAlgorithms } from './utils/hmac';
+
+import {
+    Network,
+    Networkish
+} from './utils/networks';
+
+import {
+    Transaction,
+    UnsignedTransaction
+} from './utils/transaction';
+
+import { UnicodeNormalizationForm } from './utils/utf8';
+
+import {
+    ConnectionInfo,
+    OnceBlockable,
+    PollOptions
+} from './utils/web';
+
+import {
+    EncryptOptions,
+    ProgressCallback,
+} from './wallet/secret-storage';
+
+import { Wordlist } from './wordlists/wordlist';
+
+///////////////////////////////
+// Exported Types
+
+export {
+    // Abstract classes
+    Provider,
+    Signer,
+
+    // ./contracts/contract
+    ContractFunction,
+    EventFilter,
+    Event,
+
+    // ./contracts/interface
+    Indexed,
+    DeployDescription,
+    EventDescription,
+    FunctionDescription,
+    LogDescription,
+    TransactionDescription,
+
+    // ./providers/abstract-provider
+    BlockTag,
+    EventType,
+    Filter,
+    Listener,
+    TransactionRequest,
+    Block,
+    Log,
+    TransactionReceipt,
+    TransactionResponse,
+
+    // ./providers/web3-provider
+    AsyncSendable,
+
+    // ./utils/abi-coder
+    CoerceFunc,
+    EventFragment,
+    FunctionFragment,
+    ParamType,
+
+    // ./utils/bignumber
+    BigNumberish,
+
+    // ./utils/bytes
+    Arrayish,
+    Hexable,
+    Signature,
+
+    // ./utils/hmac
+    SupportedAlgorithms,
+
+    // ./utils/networks
+    Network,
+    Networkish,
+
+    // ./utils/transaction
+    UnsignedTransaction,
+    Transaction,
+
+    // ./utils/utf8
+    UnicodeNormalizationForm,
+
+    // ./utils/web
+    ConnectionInfo,
+    OnceBlockable,
+    PollOptions,
+
+    // ./wallet/secret-storage
+    EncryptOptions,
+    ProgressCallback,
+
+    // ./wordlists/wordlist
+    Wordlist
+}
+
+///////////////////////////////
+
diff --git a/src.ts/utils/bytes.ts b/src.ts/utils/bytes.ts
index 20cbccd9..089711ae 100644
--- a/src.ts/utils/bytes.ts
+++ b/src.ts/utils/bytes.ts
@@ -31,9 +31,6 @@ export interface Signature {
 ///////////////////////////////
 
 
-export const AddressZero = '0x0000000000000000000000000000000000000000';
-export const HashZero = '0x0000000000000000000000000000000000000000000000000000000000000000';
-
 export function isHexable(value: any): value is Hexable {
     return !!(value.toHexString);
 }
diff --git a/src.ts/utils/constants.ts b/src.ts/utils/constants.ts
new file mode 100644
index 00000000..d4a2357f
--- /dev/null
+++ b/src.ts/utils/constants.ts
@@ -0,0 +1,31 @@
+import {
+    ConstantNegativeOne,
+    ConstantZero,
+    ConstantOne,
+    ConstantTwo,
+    ConstantWeiPerEther,
+    ConstantMaxUint256
+} from './bignumber';
+
+const AddressZero = '0x0000000000000000000000000000000000000000';
+const HashZero = '0x0000000000000000000000000000000000000000000000000000000000000000';
+
+// NFKD (decomposed)
+//const EtherSymbol = '\uD835\uDF63';
+
+// NFKC (composed)
+const EtherSymbol = '\u039e';
+
+export const constants = {
+    AddressZero: AddressZero,
+    HashZero: HashZero,
+
+    EtherSymbol: EtherSymbol,
+
+    NegativeOne: ConstantNegativeOne,
+    Zero: ConstantZero,
+    One: ConstantOne,
+    Two: ConstantTwo,
+    WeiPerEther: ConstantWeiPerEther,
+    MaxUint256: ConstantMaxUint256
+};
diff --git a/src.ts/utils/index.ts b/src.ts/utils/index.ts
index ae5ce8d4..1b70b944 100644
--- a/src.ts/utils/index.ts
+++ b/src.ts/utils/index.ts
@@ -3,8 +3,8 @@
 import { AbiCoder, defaultAbiCoder, formatSignature, formatParamType, parseSignature, parseParamType } from './abi-coder';
 import { getAddress, getContractAddress, getIcapAddress } from './address';
 import * as base64 from './base64';
-import { BigNumber, bigNumberify, ConstantNegativeOne, ConstantZero, ConstantOne, ConstantTwo, ConstantWeiPerEther, ConstantMaxUint256 } from './bignumber';
-import { AddressZero, arrayify, concat, HashZero, hexDataSlice, hexDataLength, hexlify, hexStripZeros, hexZeroPad, joinSignature, padZeros, splitSignature, stripZeros } from './bytes';
+import { BigNumber, bigNumberify } from './bignumber';
+import { arrayify, concat, hexDataSlice, hexDataLength, hexlify, hexStripZeros, hexZeroPad, joinSignature, padZeros, splitSignature, stripZeros } from './bytes';
 import { hashMessage, id, namehash } from './hash';
 import { getJsonWalletAddress } from './json-wallet';
 import { keccak256 } from './keccak256';
@@ -20,25 +20,6 @@ import { toUtf8Bytes, toUtf8String } from './utf8';
 import { formatEther, parseEther, formatUnits, parseUnits } from './units';
 import { fetchJson } from './web';
 
-import * as errors from './errors';
-
-// NFKD (decomposed)
-//const etherSymbol = '\uD835\uDF63';
-
-// NFKC (composed)
-const etherSymbol = '\u039e';
-
-const constants = {
-    AddressZero: AddressZero,
-    HashZero: HashZero,
-    NegativeOne: ConstantNegativeOne,
-    Zero: ConstantZero,
-    One: ConstantOne,
-    Two: ConstantTwo,
-    WeiPerEther: ConstantWeiPerEther,
-    MaxUint256: ConstantMaxUint256
-};
-
 export {
     AbiCoder,
     defaultAbiCoder,
@@ -47,8 +28,6 @@ export {
     parseSignature,
     parseParamType,
 
-    constants,
-
     RLP,
 
     fetchJson,
@@ -59,8 +38,6 @@ export {
     resolveProperties,
     shallowCopy,
 
-    etherSymbol,
-
     arrayify,
 
     concat,
@@ -113,8 +90,6 @@ export {
     getJsonWalletAddress,
 
     computePublicKey,
-    verifyMessage,
-
-    errors
+    verifyMessage
 }
 
diff --git a/src.ts/wallet/index.ts b/src.ts/wallet/index.ts
index aadfd190..af23184e 100644
--- a/src.ts/wallet/index.ts
+++ b/src.ts/wallet/index.ts
@@ -3,10 +3,8 @@
 import { Wallet } from './wallet';
 import * as HDNode from './hdnode';
 import { SigningKey } from './signing-key';
-import { Signer as AbstractSigner } from './abstract-signer';
 
 export {
-    AbstractSigner,
     HDNode,
     SigningKey,
     Wallet