What will happen if the broker (custodian) goes bankrupt?

Some input here on U.S. domiciled brokers:

https://lazybutintelligentinvesting.wordpress.c...

Hi Jing Wei,

Under sections 16, 17, 26 and 27 of the Securities and Futures (Licensing and Conduct of Business) [https://sso.agc.gov.sg/SL/SFA2001-RG10], the gist of it is that the brokerage firm must keep customer assets in a trust account separate from the firm's own assets. These assets will be excluded from claims from creditors. That's the protection that is available for investors.

However with regards to the claim process, I'd imagine that each broker has their own set of processes, so I am unable to comment. Possibly you will get a certificate stating what you own, and with that, use it to transfer your holdings to another broker.