Fair Value of ETC - Additional Information (Detail)	Jun. 30, 2024 ETC $ / shares	Dec. 31, 2023 ETC $ / shares
Fair Value Disclosures [Abstract]
Investment owned balance shares held by custodian | ETC	11,406,089.20579717	11,548,776.1723
Ethereum classic Fair Value Per Share | $ / shares	$ 23.56	$ 21.99