diff --git a/types/address.d.ts b/types/address.d.ts
index c5cba906..776cb61d 100644
--- a/types/address.d.ts
+++ b/types/address.d.ts
@@ -1,23 +1,12 @@
 import { Address, PubkeyBundle } from "@iov/bcp";
-export declare type CosmosAddressBech32Prefix =
-  | "cosmos"
-  | "cosmosvalcons"
-  | "cosmosvaloper";
-export declare type CosmosPubkeyBech32Prefix =
-  | "cosmospub"
-  | "cosmosvalconspub"
-  | "cosmosvaloperpub";
-export declare type CosmosBech32Prefix =
-  | CosmosAddressBech32Prefix
-  | CosmosPubkeyBech32Prefix;
+export declare type CosmosAddressBech32Prefix = "cosmos" | "cosmosvalcons" | "cosmosvaloper";
+export declare type CosmosPubkeyBech32Prefix = "cosmospub" | "cosmosvalconspub" | "cosmosvaloperpub";
+export declare type CosmosBech32Prefix = CosmosAddressBech32Prefix | CosmosPubkeyBech32Prefix;
 export declare function decodeCosmosAddress(
-  address: Address
+  address: Address,
 ): {
   readonly prefix: CosmosAddressBech32Prefix;
   readonly data: Uint8Array;
 };
 export declare function isValidAddress(address: string): boolean;
-export declare function pubkeyToAddress(
-  pubkey: PubkeyBundle,
-  prefix: CosmosBech32Prefix
-): Address;
+export declare function pubkeyToAddress(pubkey: PubkeyBundle, prefix: CosmosBech32Prefix): Address;
diff --git a/types/cosmoscodec.d.ts b/types/cosmoscodec.d.ts
index 59482edc..64de7f38 100644
--- a/types/cosmoscodec.d.ts
+++ b/types/cosmoscodec.d.ts
@@ -8,17 +8,18 @@ import {
   SigningJob,
   TransactionId,
   TxCodec,
-  UnsignedTransaction
+  UnsignedTransaction,
 } from "@iov/bcp";
+import { CosmosBech32Prefix } from "./address";
+import { TokenInfos } from "./types";
 export declare class CosmosCodec implements TxCodec {
+  private readonly prefix;
+  private readonly tokens;
+  constructor(prefix: CosmosBech32Prefix, tokens: TokenInfos);
   bytesToSign(unsigned: UnsignedTransaction, nonce: Nonce): SigningJob;
   bytesToPost(signed: SignedTransaction): PostableBytes;
   identifier(signed: SignedTransaction): TransactionId;
-  parseBytes(
-    bytes: PostableBytes,
-    chainId: ChainId,
-    nonce?: Nonce
-  ): SignedTransaction;
+  parseBytes(bytes: PostableBytes, chainId: ChainId, nonce?: Nonce): SignedTransaction;
   identityToAddress(identity: Identity): Address;
   isValidAddress(address: string): boolean;
 }
diff --git a/types/cosmosconnection.d.ts b/types/cosmosconnection.d.ts
index 94efb242..4c8e8f66 100644
--- a/types/cosmosconnection.d.ts
+++ b/types/cosmosconnection.d.ts
@@ -17,16 +17,20 @@ import {
   TokenTicker,
   TransactionId,
   TransactionQuery,
-  UnsignedTransaction
+  UnsignedTransaction,
 } from "@iov/bcp";
 import { Stream } from "xstream";
+import { CosmosBech32Prefix } from "./address";
+import { TokenInfos } from "./types";
 export declare class CosmosConnection implements BlockchainConnection {
-  static establish(url: string): Promise<CosmosConnection>;
+  static establish(url: string, prefix: CosmosBech32Prefix, tokenInfo: TokenInfos): Promise<CosmosConnection>;
   private static initialize;
   private readonly restClient;
   private readonly chainData;
   private readonly primaryToken;
   private readonly supportedTokens;
+  private readonly _prefix;
+  private readonly tokenInfo;
   private get prefix();
   private constructor();
   disconnect(): void;
@@ -37,29 +41,16 @@ export declare class CosmosConnection implements BlockchainConnection {
   getAccount(query: AccountQuery): Promise<Account | undefined>;
   watchAccount(_account: AccountQuery): Stream<Account | undefined>;
   getNonce(query: AddressQuery | PubkeyQuery): Promise<Nonce>;
-  getNonces(
-    query: AddressQuery | PubkeyQuery,
-    count: number
-  ): Promise<readonly Nonce[]>;
+  getNonces(query: AddressQuery | PubkeyQuery, count: number): Promise<readonly Nonce[]>;
   getBlockHeader(height: number): Promise<BlockHeader>;
   watchBlockHeaders(): Stream<BlockHeader>;
-  getTx(
-    id: TransactionId
-  ): Promise<
-    ConfirmedAndSignedTransaction<UnsignedTransaction> | FailedTransaction
-  >;
+  getTx(id: TransactionId): Promise<ConfirmedAndSignedTransaction<UnsignedTransaction> | FailedTransaction>;
   postTx(tx: PostableBytes): Promise<PostTxResponse>;
   searchTx(
-    query: TransactionQuery
-  ): Promise<
-    readonly (ConfirmedTransaction<UnsignedTransaction> | FailedTransaction)[]
-  >;
-  listenTx(
-    _query: TransactionQuery
-  ): Stream<ConfirmedTransaction<UnsignedTransaction> | FailedTransaction>;
-  liveTx(
-    _query: TransactionQuery
-  ): Stream<ConfirmedTransaction<UnsignedTransaction> | FailedTransaction>;
+    query: TransactionQuery,
+  ): Promise<readonly (ConfirmedTransaction<UnsignedTransaction> | FailedTransaction)[]>;
+  listenTx(_query: TransactionQuery): Stream<ConfirmedTransaction<UnsignedTransaction> | FailedTransaction>;
+  liveTx(_query: TransactionQuery): Stream<ConfirmedTransaction<UnsignedTransaction> | FailedTransaction>;
   getFeeQuote(tx: UnsignedTransaction): Promise<Fee>;
   withDefaultFee<T extends UnsignedTransaction>(tx: T): Promise<T>;
   private parseAndPopulateTxResponse;
diff --git a/types/cosmosconnector.d.ts b/types/cosmosconnector.d.ts
index 6a18915d..509a8068 100644
--- a/types/cosmosconnector.d.ts
+++ b/types/cosmosconnector.d.ts
@@ -1,9 +1,13 @@
 import { ChainConnector, ChainId } from "@iov/bcp";
 import { CosmosConnection } from "./cosmosconnection";
+import { CosmosBech32Prefix } from "./address";
+import { TokenInfos } from "./types";
 /**
  * A helper to connect to a cosmos-based chain at a given url
  */
 export declare function createCosmosConnector(
   url: string,
-  expectedChainId?: ChainId
+  prefix: CosmosBech32Prefix,
+  tokenInfo: TokenInfos,
+  expectedChainId?: ChainId,
 ): ChainConnector<CosmosConnection>;
diff --git a/types/decode.d.ts b/types/decode.d.ts
index ac66c871..8b7332c7 100644
--- a/types/decode.d.ts
+++ b/types/decode.d.ts
@@ -9,30 +9,27 @@ import {
   SendTransaction,
   SignatureBytes,
   SignedTransaction,
-  UnsignedTransaction
+  UnsignedTransaction,
 } from "@iov/bcp";
 import amino from "@tendermint/amino-js";
 import { TxsResponse } from "./restclient";
+import { TokenInfos } from "./types";
 export declare function decodePubkey(pubkey: amino.PubKey): PubkeyBundle;
 export declare function decodeSignature(signature: string): SignatureBytes;
-export declare function decodeFullSignature(
-  signature: amino.StdSignature,
-  nonce: number
-): FullSignature;
-export declare function decodeAmount(amount: amino.Coin): Amount;
-export declare function parseMsg(
-  msg: amino.Msg,
-  chainId: ChainId
-): SendTransaction;
-export declare function parseFee(fee: amino.StdFee): Fee;
+export declare function decodeFullSignature(signature: amino.StdSignature, nonce: number): FullSignature;
+export declare const decodeAmount: (tokens: TokenInfos) => (coin: amino.Coin) => Amount;
+export declare function parseMsg(msg: amino.Msg, chainId: ChainId, tokens: TokenInfos): SendTransaction;
+export declare function parseFee(fee: amino.StdFee, tokens: TokenInfos): Fee;
 export declare function parseTx(
   tx: amino.Tx,
   chainId: ChainId,
-  nonce: Nonce
+  nonce: Nonce,
+  tokens: TokenInfos,
 ): SignedTransaction;
 export declare function parseTxsResponse(
   chainId: ChainId,
   currentHeight: number,
   nonce: Nonce,
-  response: TxsResponse
+  response: TxsResponse,
+  tokens: TokenInfos,
 ): ConfirmedAndSignedTransaction<UnsignedTransaction>;
diff --git a/types/encode.d.ts b/types/encode.d.ts
index e5931aef..2a0788df 100644
--- a/types/encode.d.ts
+++ b/types/encode.d.ts
@@ -1,18 +1,9 @@
-import {
-  Amount,
-  Fee,
-  FullSignature,
-  PubkeyBundle,
-  SignedTransaction,
-  UnsignedTransaction
-} from "@iov/bcp";
+import { Amount, Fee, FullSignature, PubkeyBundle, SignedTransaction, UnsignedTransaction } from "@iov/bcp";
 import amino from "@tendermint/amino-js";
-import { AminoTx } from "./types";
+import { AminoTx, TokenInfos } from "./types";
 export declare function encodePubkey(pubkey: PubkeyBundle): amino.PubKey;
-export declare function encodeAmount(amount: Amount): amino.Coin;
-export declare function encodeFee(fee: Fee): amino.StdFee;
-export declare function encodeFullSignature(
-  fullSignature: FullSignature
-): amino.StdSignature;
-export declare function buildUnsignedTx(tx: UnsignedTransaction): AminoTx;
-export declare function buildSignedTx(tx: SignedTransaction): AminoTx;
+export declare function encodeAmount(amount: Amount, tokens: TokenInfos): amino.Coin;
+export declare function encodeFee(fee: Fee, tokens: TokenInfos): amino.StdFee;
+export declare function encodeFullSignature(fullSignature: FullSignature): amino.StdSignature;
+export declare function buildUnsignedTx(tx: UnsignedTransaction, tokens: TokenInfos): AminoTx;
+export declare function buildSignedTx(tx: SignedTransaction, tokens: TokenInfos): AminoTx;
diff --git a/types/restclient.d.ts b/types/restclient.d.ts
index 9097d2cb..df1d9251 100644
--- a/types/restclient.d.ts
+++ b/types/restclient.d.ts
@@ -69,10 +69,7 @@ export declare class RestClient {
   nodeInfo(): Promise<NodeInfoResponse>;
   blocksLatest(): Promise<BlocksResponse>;
   blocks(height: number): Promise<BlocksResponse>;
-  authAccounts(
-    address: Address,
-    height?: string
-  ): Promise<AuthAccountsResponse>;
+  authAccounts(address: Address, height?: string): Promise<AuthAccountsResponse>;
   txs(query: string): Promise<SearchTxsResponse>;
   txsById(id: TransactionId): Promise<TxsResponse>;
   postTx(tx: PostableBytes): Promise<PostTxsResponse>;
diff --git a/types/types.d.ts b/types/types.d.ts
index adcda576..62d5ab9b 100644
--- a/types/types.d.ts
+++ b/types/types.d.ts
@@ -1,7 +1,12 @@
+import { Amount, Token } from "@iov/bcp";
 import amino from "@tendermint/amino-js";
 export declare type AminoTx = amino.Tx & {
   readonly value: amino.StdTx;
 };
-export declare function isAminoStdTx(
-  txValue: amino.TxValue
-): txValue is amino.StdTx;
+export declare function isAminoStdTx(txValue: amino.TxValue): txValue is amino.StdTx;
+export interface TokenInfo extends Token {
+  readonly denom: string;
+}
+export declare type TokenInfos = ReadonlyArray<TokenInfo>;
+export declare function amountToCoin(lookup: ReadonlyArray<TokenInfo>, amount: Amount): amino.Coin;
+export declare function coinToAmount(tokens: TokenInfos, coin: amino.Coin): Amount;