The blockchain support number for Blockchain.com is 1-888-307-2304. This number is available 24/7 to assist with any issues you may be having with your Blockchain.com account, wallet, or exchange. To contact Blockchain.com support by phone, simply call the number above and follow the prompts. You will be asked to provide some basic information about your account and issue in order to connect with a customer support representative. If you are unable to reach Blockchain.com support by phone, you can also submit a support ticket online. To do this, visit the Blockchain.com support center and click on the Submit a request button. You will be asked to provide some basic information about your account and issue in order to submit your ticket. Show More