Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 204,774	$ 13,213	$ 565,622	$ 40,316
Loyalty redemption platform
Disaggregation of Revenue [Line Items]
Total revenue	13,024	12,742	38,096	38,852
Crypto services
Disaggregation of Revenue [Line Items]
Total revenue	191,750	471	527,526	1,464
Rebates and incentive payments netted against total revenue	100	100	100	400
Crypto services | Related Party
Disaggregation of Revenue [Line Items]
Total revenue	100	100	100	100
Transaction revenue
Disaggregation of Revenue [Line Items]
Total revenue	198,526	6,927	548,774	21,477
Rebates and incentive payments netted against total revenue	100	100	100	400
Transaction revenue | Related Party
Disaggregation of Revenue [Line Items]
Total revenue	100	100	100	100
Subscription and service revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 6,248	$ 6,286	$ 16,848	$ 18,839