// TODO: imports and functions goes here
export const myblockchainCodec: TxCodec = {

  /** these are the bytes we create to add a signature;
   * they often include nonce and chainID */
  bytesToSign: (unsigned: UnsignedTransaction, nonce: Nonce): SigningJob => {
    // TODO: write your unsigned transaction serialization recipe
    return {
      bytes, /** the serialized transaction */
      prehashType /** your crypto flawor from PrehashType: Sha256, Sha512, Keccak256 */
    };
  },

  /** bytesToPost includes the raw transaction appended with the various signatures */
  bytesToPost: (signed: SignedTransaction): PostableBytes => {
    // TODO: write your signed transaction serialization recipe
    return mySignedTxSerializedBytes as PostableBytes;
  },

  /** identifier is usually some sort of hash of bytesToPost, chain-dependent */
  identifier: (signed: SignedTransaction): TransactionId => {
    // TODO: generate your transaction id
    return myTransactionId as TransactionId;
  },

  /** parseBytes will recover bytes from the blockchain into a format we can use */
  parseBytes: (bytes: PostableBytes, chainId: ChainId): SignedTransaction => {
    // TODO: deserialize your transaction bytes into the readable components
    return myHumanReadTransaction as SignedTransaction;
  },

  /** chain-dependent way to calculate address from a public key */
  identityToAddress: (identity: PublicIdentity): Address => {
    // TODO: logic to get from public key to blockchain address
    return myAddressFromPubKey as Address;
  },

  /** chain-dependent validation of address */
  isValidAddress: (address: string): boolean => {
    // TODO: logic to validate an address
    return myAddressValidationBoolean;
  },
}