There are several popular cryptocurrency exchanges in Christchurch, New Zealand that are widely used by residents looking to buy, sell, and trade digital currencies. Some of the most popular exchanges in Christchurch include:

1. Cryptopia: Cryptopia is one of the largest cryptocurrency exchanges in New Zealand and has a strong presence in Christchurch. It offers a wide range of cryptocurrencies for trading and has a user-friendly interface that makes it easy for beginners to get started.

2. Easy Crypto: Easy Crypto is another popular cryptocurrency exchange in Christchurch that allows users to buy and sell a variety of cryptocurrencies quickly and easily. It offers competitive fees and a simple verification process, making it a popular choice for those new to the world of cryptocurrency.

3. Kiwi-coin: Kiwi-coin is a New Zealand-based cryptocurrency exchange that is popular among residents of Christchurch. It offers a limited selection of cryptocurrencies for trading, but its simple interface and low fees make it a popular choice for those looking to buy or sell Bitcoin and other popular digital currencies.

4. BitPrime: BitPrime is a cryptocurrency brokerage service based in Christchurch that allows users to buy and sell a variety of cryptocurrencies, including Bitcoin, Ethereum, and Litecoin. It offers competitive rates and excellent customer service, making it a popular choice among residents of Christchurch.

Overall, these are some of the most popular cryptocurrency exchanges in Christchurch, New Zealand that cater to the needs of both beginners and experienced traders in the digital currency market.