Because Hydrogen uses open banking APIs, there should never be a micro-deposit verification needed when "pulling" money from a third-party account into their Hydrogen debit card.
However, there may be use cases where money being "pushed" into the Hydrogen debit card will require a micro-deposit verification from the third-party. For example, a payroll software may require micro-deposit verification before a paycheck can be pushed into the Hydrogen debit card at Metabank.
The user will see the micro-deposits as transactions on their no-code components or no-code web app. They will show up as small credits in their account, e.g. $0.05 and $0.08. The user would type in these amounts to the third-party app to confirm the account.