Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets:
U.S. Treasury debt securities	$ 13,170	$ 17,398
Safeguarding asset for crypto	974,486	701,556
Liabilities:
Safeguarding obligation for crypto	974,486	701,556
Warrant liability - public warrants	38,757	2,356
U.S. Treasury debt securities
Assets:
U.S. Treasury debt securities	13,170	17,398
Fair Value, Recurring
Assets:
Safeguarding asset for crypto	974,486	701,556
Total Assets	987,656	718,954
Liabilities:
Safeguarding obligation for crypto	974,486	701,556
Warrant liability - Class 1 and Class 2 warrants	37,543
Total Liabilities	1,013,243	703,912
Fair Value, Recurring | U.S. Treasury debt securities
Assets:
U.S. Treasury debt securities	13,170	17,398
Fair Value, Recurring | Level 1
Assets:
Safeguarding asset for crypto	0	0
Total Assets	13,170	17,398
Liabilities:
Safeguarding obligation for crypto	0	0
Warrant liability - Class 1 and Class 2 warrants	0
Total Liabilities	1,214	2,356
Fair Value, Recurring | Level 1 | U.S. Treasury debt securities
Assets:
U.S. Treasury debt securities	13,170	17,398
Fair Value, Recurring | Level 2
Assets:
Safeguarding asset for crypto	974,486	701,556
Total Assets	974,486	701,556
Liabilities:
Safeguarding obligation for crypto	974,486	701,556
Warrant liability - Class 1 and Class 2 warrants	0
Total Liabilities	974,486	701,556
Fair Value, Recurring | Level 2 | U.S. Treasury debt securities
Assets:
U.S. Treasury debt securities	0	0
Fair Value, Recurring | Level 3
Assets:
Safeguarding asset for crypto	0	0
Total Assets	0	0
Liabilities:
Safeguarding obligation for crypto	0	0
Warrant liability - Class 1 and Class 2 warrants	37,543
Total Liabilities	37,543	0
Fair Value, Recurring | Level 3 | U.S. Treasury debt securities
Assets:
U.S. Treasury debt securities	0	0
Public warrants | Fair Value, Recurring
Liabilities:
Warrant liability - public warrants	1,214	2,356
Public warrants | Fair Value, Recurring | Level 1
Liabilities:
Warrant liability - public warrants	1,214	2,356
Public warrants | Fair Value, Recurring | Level 2
Liabilities:
Warrant liability - public warrants	0	0
Public warrants | Fair Value, Recurring | Level 3
Liabilities:
Warrant liability - public warrants	$ 0	$ 0