message: export ofc file
diff: @@ -2,6 +2,7 @@ export * from './base';
  export * from './coins';
  export * from './networks';
  export * from './errors';
  +export { OfcCoin } from './ofc';
  export { UtxoCoin } from './utxo';
  export { AccountCoin, Erc20Coin } from './account';
  export { CoinMap } from './map';
  