diff --git a/packages/bcp/src/cosmwasmconnection.ts b/packages/bcp/src/cosmwasmconnection.ts
index f83b1e8f..7abf2904 100644
--- a/packages/bcp/src/cosmwasmconnection.ts
+++ b/packages/bcp/src/cosmwasmconnection.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/camelcase */
-import { RestClient, TxsResponse, types } from "@cosmwasm/sdk";
+import { RestClient, TxsResponse } from "@cosmwasm/sdk";
 import {
   Account,
   AccountQuery,
@@ -36,7 +36,7 @@ import { Stream } from "xstream";
 import { CosmosBech32Prefix, decodeCosmosPubkey, pubkeyToAddress } from "./address";
 import { Caip5 } from "./caip5";
 import { decodeAmount, parseTxsResponse } from "./decode";
-import { accountToNonce } from "./types";
+import { accountToNonce, TokenInfo } from "./types";
 
 interface ChainData {
   readonly chainId: ChainId;
@@ -66,7 +66,7 @@ function buildQueryString({
   return components.filter(Boolean).join("&");
 }
 
-export type TokenConfiguration = readonly (types.TokenInfo & { readonly name: string })[];
+export type TokenConfiguration = (TokenInfo & { readonly name: string })[];
 
 export class CosmWasmConnection implements BlockchainConnection {
   // we must know prefix and tokens a priori to understand the chain
@@ -88,7 +88,7 @@ export class CosmWasmConnection implements BlockchainConnection {
   private readonly restClient: RestClient;
   private readonly chainData: ChainData;
   private readonly _prefix: CosmosBech32Prefix;
-  private readonly tokenInfo: readonly types.TokenInfo[];
+  private readonly tokenInfo: readonly TokenInfo[];
 
   // these are derived from arguments (cached for use in multiple functions)
   private readonly primaryToken: Token;
diff --git a/packages/bcp/src/decode.ts b/packages/bcp/src/decode.ts
index 6fa4ead7..8239a9e2 100644
--- a/packages/bcp/src/decode.ts
+++ b/packages/bcp/src/decode.ts
@@ -1,4 +1,4 @@
-import { coinToDecimal, TxsResponse, types } from "@cosmwasm/sdk";
+import { TxsResponse, types } from "@cosmwasm/sdk";
 import {
   Address,
   Algorithm,
@@ -17,7 +17,7 @@ import {
   TransactionId,
   UnsignedTransaction,
 } from "@iov/bcp";
-import { Encoding } from "@iov/encoding";
+import { Decimal, Encoding } from "@iov/encoding";
 
 import { TokenInfos } from "./types";
 
@@ -54,6 +54,15 @@ export function decodeFullSignature(signature: types.StdSignature, nonce: number
   };
 }
 
+export function coinToDecimal(tokens: TokenInfos, coin: types.Coin): readonly [Decimal, string] {
+  const match = tokens.find(({ denom }) => denom === coin.denom);
+  if (!match) {
+    throw Error(`unknown denom: ${coin.denom}`);
+  }
+  const value = Decimal.fromAtomics(coin.amount, match.fractionalDigits);
+  return [value, match.ticker];
+}
+
 export function decodeAmount(tokens: TokenInfos, coin: types.Coin): Amount {
   const [value, ticker] = coinToDecimal(tokens, coin);
   return {
diff --git a/packages/bcp/src/encode.ts b/packages/bcp/src/encode.ts
index d8793ad0..94288c48 100644
--- a/packages/bcp/src/encode.ts
+++ b/packages/bcp/src/encode.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/camelcase */
-import { decimalToCoin, types } from "@cosmwasm/sdk";
+import { types } from "@cosmwasm/sdk";
 import {
   Algorithm,
   Amount,
@@ -34,6 +34,22 @@ export function encodePubkey(pubkey: PubkeyBundle): types.PubKey {
   }
 }
 
+export function decimalToCoin(lookup: TokenInfos, value: Decimal, ticker: string): types.Coin {
+  const match = lookup.find(token => token.ticker === ticker);
+  if (!match) {
+    throw Error(`unknown ticker: ${ticker}`);
+  }
+  if (match.fractionalDigits !== value.fractionalDigits) {
+    throw new Error(
+      "Mismatch in fractional digits between token and value. If you really want, implement a conversion here. However, this indicates a bug in the caller code.",
+    );
+  }
+  return {
+    denom: match.denom,
+    amount: value.atomics,
+  };
+}
+
 export function encodeAmount(amount: Amount, tokens: TokenInfos): types.Coin {
   return decimalToCoin(
     tokens,
diff --git a/packages/bcp/src/types.ts b/packages/bcp/src/types.ts
index eb90b68f..32133828 100644
--- a/packages/bcp/src/types.ts
+++ b/packages/bcp/src/types.ts
@@ -1,7 +1,21 @@
-import { types } from "@cosmwasm/sdk";
 import { Nonce } from "@iov/bcp";
 
-export type TokenInfos = ReadonlyArray<types.TokenInfo>;
+export interface TokenInfo {
+  readonly denom: string;
+  readonly ticker: string;
+  /**
+   * The number of fractional digits the token supports.
+   *
+   * A quantity is expressed as atomic units. 10^fractionalDigits of those
+   * atomic units make up 1 token.
+   *
+   * E.g. in Ethereum 10^18 wei are 1 ETH and from the quantity 123000000000000000000
+   * the last 18 digits are the fractional part and the rest the wole part.
+   */
+  readonly fractionalDigits: number;
+}
+
+export type TokenInfos = ReadonlyArray<TokenInfo>;
 
 // tslint:disable-next-line:no-bitwise
 const maxAcct = 1 << 23;
diff --git a/packages/bcp/types/cosmwasmconnection.d.ts b/packages/bcp/types/cosmwasmconnection.d.ts
index b84557df..c3c2f616 100644
--- a/packages/bcp/types/cosmwasmconnection.d.ts
+++ b/packages/bcp/types/cosmwasmconnection.d.ts
@@ -1,4 +1,3 @@
-import { types } from "@cosmwasm/sdk";
 import {
   Account,
   AccountQuery,
@@ -22,7 +21,8 @@ import {
 } from "@iov/bcp";
 import { Stream } from "xstream";
 import { CosmosBech32Prefix } from "./address";
-export declare type TokenConfiguration = readonly (types.TokenInfo & {
+import { TokenInfo } from "./types";
+export declare type TokenConfiguration = (TokenInfo & {
   readonly name: string;
 })[];
 export declare class CosmWasmConnection implements BlockchainConnection {
diff --git a/packages/bcp/types/decode.d.ts b/packages/bcp/types/decode.d.ts
index af8f43be..60f9b198 100644
--- a/packages/bcp/types/decode.d.ts
+++ b/packages/bcp/types/decode.d.ts
@@ -12,10 +12,12 @@ import {
   SignedTransaction,
   UnsignedTransaction,
 } from "@iov/bcp";
+import { Decimal } from "@iov/encoding";
 import { TokenInfos } from "./types";
 export declare function decodePubkey(pubkey: types.PubKey): PubkeyBundle;
 export declare function decodeSignature(signature: string): SignatureBytes;
 export declare function decodeFullSignature(signature: types.StdSignature, nonce: number): FullSignature;
+export declare function coinToDecimal(tokens: TokenInfos, coin: types.Coin): readonly [Decimal, string];
 export declare function decodeAmount(tokens: TokenInfos, coin: types.Coin): Amount;
 export declare function parseMsg(msg: types.Msg, chainId: ChainId, tokens: TokenInfos): SendTransaction;
 export declare function parseFee(fee: types.StdFee, tokens: TokenInfos): Fee;
diff --git a/packages/bcp/types/encode.d.ts b/packages/bcp/types/encode.d.ts
index 72e10ba8..7af2c690 100644
--- a/packages/bcp/types/encode.d.ts
+++ b/packages/bcp/types/encode.d.ts
@@ -1,7 +1,9 @@
 import { types } from "@cosmwasm/sdk";
 import { Amount, Fee, FullSignature, PubkeyBundle, SignedTransaction, UnsignedTransaction } from "@iov/bcp";
+import { Decimal } from "@iov/encoding";
 import { TokenInfos } from "./types";
 export declare function encodePubkey(pubkey: PubkeyBundle): types.PubKey;
+export declare function decimalToCoin(lookup: TokenInfos, value: Decimal, ticker: string): types.Coin;
 export declare function encodeAmount(amount: Amount, tokens: TokenInfos): types.Coin;
 export declare function encodeFee(fee: Fee, tokens: TokenInfos): types.StdFee;
 export declare function encodeFullSignature(fullSignature: FullSignature): types.StdSignature;
diff --git a/packages/bcp/types/types.d.ts b/packages/bcp/types/types.d.ts
index b419ece0..e8ac6ce2 100644
--- a/packages/bcp/types/types.d.ts
+++ b/packages/bcp/types/types.d.ts
@@ -1,6 +1,19 @@
-import { types } from "@cosmwasm/sdk";
 import { Nonce } from "@iov/bcp";
-export declare type TokenInfos = ReadonlyArray<types.TokenInfo>;
+export interface TokenInfo {
+  readonly denom: string;
+  readonly ticker: string;
+  /**
+   * The number of fractional digits the token supports.
+   *
+   * A quantity is expressed as atomic units. 10^fractionalDigits of those
+   * atomic units make up 1 token.
+   *
+   * E.g. in Ethereum 10^18 wei are 1 ETH and from the quantity 123000000000000000000
+   * the last 18 digits are the fractional part and the rest the wole part.
+   */
+  readonly fractionalDigits: number;
+}
+export declare type TokenInfos = ReadonlyArray<TokenInfo>;
 export interface NonceInfo {
   readonly account_number: string;
   readonly sequence: string;
diff --git a/packages/sdk/src/decoding.ts b/packages/sdk/src/decoding.ts
index 701e1e69..e69de29b 100644
--- a/packages/sdk/src/decoding.ts
+++ b/packages/sdk/src/decoding.ts
@@ -1,13 +0,0 @@
-import { Decimal } from "@iov/encoding";
-import amino from "@tendermint/amino-js";
-
-import { TokenInfo } from "./types";
-
-export function coinToDecimal(tokens: readonly TokenInfo[], coin: amino.Coin): readonly [Decimal, string] {
-  const match = tokens.find(({ denom }) => denom === coin.denom);
-  if (!match) {
-    throw Error(`unknown denom: ${coin.denom}`);
-  }
-  const value = Decimal.fromAtomics(coin.amount, match.fractionalDigits);
-  return [value, match.ticker];
-}
diff --git a/packages/sdk/src/encoding.ts b/packages/sdk/src/encoding.ts
index c4bed170..e69de29b 100644
--- a/packages/sdk/src/encoding.ts
+++ b/packages/sdk/src/encoding.ts
@@ -1,20 +0,0 @@
-import { Decimal } from "@iov/encoding";
-import amino from "@tendermint/amino-js";
-
-import { TokenInfo } from "./types";
-
-export function decimalToCoin(lookup: readonly TokenInfo[], value: Decimal, ticker: string): amino.Coin {
-  const match = lookup.find(token => token.ticker === ticker);
-  if (!match) {
-    throw Error(`unknown ticker: ${ticker}`);
-  }
-  if (match.fractionalDigits !== value.fractionalDigits) {
-    throw new Error(
-      "Mismatch in fractional digits between token and value. If you really want, implement a conversion here. However, this indicates a bug in the caller code.",
-    );
-  }
-  return {
-    denom: match.denom,
-    amount: value.atomics,
-  };
-}
diff --git a/packages/sdk/src/index.ts b/packages/sdk/src/index.ts
index a38d5033..d97b584b 100644
--- a/packages/sdk/src/index.ts
+++ b/packages/sdk/src/index.ts
@@ -1,6 +1,4 @@
-export { coinToDecimal } from "./decoding";
-export { decimalToCoin } from "./encoding";
-export { RestClient, TxsResponse } from "./restclient";
-
 import * as types from "./types";
+
+export { RestClient, TxsResponse } from "./restclient";
 export { types };
diff --git a/packages/sdk/src/types.ts b/packages/sdk/src/types.ts
index a99179df..7dea1856 100644
--- a/packages/sdk/src/types.ts
+++ b/packages/sdk/src/types.ts
@@ -67,18 +67,3 @@ export function isAminoStdTx(txValue: unknown): txValue is StdTx {
     typeof memo === "string" && Array.isArray(msg) && typeof fee === "object" && Array.isArray(signatures)
   );
 }
-
-export interface TokenInfo {
-  readonly denom: string;
-  readonly ticker: string;
-  /**
-   * The number of fractional digits the token supports.
-   *
-   * A quantity is expressed as atomic units. 10^fractionalDigits of those
-   * atomic units make up 1 token.
-   *
-   * E.g. in Ethereum 10^18 wei are 1 ETH and from the quantity 123000000000000000000
-   * the last 18 digits are the fractional part and the rest the wole part.
-   */
-  readonly fractionalDigits: number;
-}
diff --git a/packages/sdk/types/decoding.d.ts b/packages/sdk/types/decoding.d.ts
index 6c1552eb..e69de29b 100644
--- a/packages/sdk/types/decoding.d.ts
+++ b/packages/sdk/types/decoding.d.ts
@@ -1,7 +0,0 @@
-import { Decimal } from "@iov/encoding";
-import amino from "@tendermint/amino-js";
-import { TokenInfo } from "./types";
-export declare function coinToDecimal(
-  tokens: readonly TokenInfo[],
-  coin: amino.Coin,
-): readonly [Decimal, string];
diff --git a/packages/sdk/types/encoding.d.ts b/packages/sdk/types/encoding.d.ts
index c8e3334e..e69de29b 100644
--- a/packages/sdk/types/encoding.d.ts
+++ b/packages/sdk/types/encoding.d.ts
@@ -1,8 +0,0 @@
-import { Decimal } from "@iov/encoding";
-import amino from "@tendermint/amino-js";
-import { TokenInfo } from "./types";
-export declare function decimalToCoin(
-  lookup: readonly TokenInfo[],
-  value: Decimal,
-  ticker: string,
-): amino.Coin;
diff --git a/packages/sdk/types/index.d.ts b/packages/sdk/types/index.d.ts
index 13b0904b..b441abf5 100644
--- a/packages/sdk/types/index.d.ts
+++ b/packages/sdk/types/index.d.ts
@@ -1,6 +1,3 @@
-export { coinToDecimal } from "./decoding";
-export { decimalToCoin } from "./encoding";
-export { RestClient, TxsResponse } from "./restclient";
 import * as types from "./types";
+export { RestClient, TxsResponse } from "./restclient";
 export { types };
-export { isAminoStdTx } from "./types";
diff --git a/packages/sdk/types/types.d.ts b/packages/sdk/types/types.d.ts
index 1f0af1a5..a5e5672d 100644
--- a/packages/sdk/types/types.d.ts
+++ b/packages/sdk/types/types.d.ts
@@ -48,17 +48,3 @@ export declare type AminoTx = Tx & {
   readonly value: StdTx;
 };
 export declare function isAminoStdTx(txValue: unknown): txValue is StdTx;
-export interface TokenInfo {
-  readonly denom: string;
-  readonly ticker: string;
-  /**
-   * The number of fractional digits the token supports.
-   *
-   * A quantity is expressed as atomic units. 10^fractionalDigits of those
-   * atomic units make up 1 token.
-   *
-   * E.g. in Ethereum 10^18 wei are 1 ETH and from the quantity 123000000000000000000
-   * the last 18 digits are the fractional part and the rest the wole part.
-   */
-  readonly fractionalDigits: number;
-}