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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def address_reencode(address, blockchain='bitcoin', **blockchain_opts):
 """ Reencode an address """

    if blockchain == 'bitcoin':
        return btc_address_reencode(address, **blockchain_opts)
    else:
        raise ValueError("Unknown blockchain '{}'".format(blockchain))