2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (continued)
Derivative contracts
Derivative contracts derive their value from underlying asset prices, other inputs or a combination of these factors. The Group does not apply hedge accounting to the derivative contracts, which are recognized as either assets or liabilities on the unaudited interim condensed consolidated balance sheets at fair value, with changes recognized as changes in fair value of derivative instruments.
From June 2023 to October 2023, the Group entered into several collar arrangements with a third party with one-month term to mitigate the effect of future price fluctuations on Ethereum or Bitcoin. The arrangements result in the Group settling a certain amount of Ethereum or Bitcoin at prices within a range. The arrangements are accounted for as derivative instruments and recorded at fair value. All collar agreements were matured as of December 31, 2023.
From October 2023 to June 2024, the Group entered into several accumulator agreements with a third party with terms ranging from six to twelve months, subject to early termination. The agreements established a barrier price and a forward strike price on future Ethereum or Bitcoin prices, and Group would receive certain Ethereum or Bitcoins over the terms at the prices specified in the agreements. In February 2024, the Group also entered into a decumulator agreement, which established a barrier price and a forward strike price on future Litecoin price, and Group would payout certain Litecoins over the terms at the prices specified in the agreements. The agreements are accounted for as derivative instruments and recorded at fair value. Some accumulator agreements and the decumulator agreement were early terminated as of December 31, 2023 and June 30, 2024.
The derivative contracts are valued by the issuer of the instruments using pricing models whose inputs are calibrated from observable market data, mainly quoted Ethereum, Bitcoin or Litecoin prices, and do not involve material subjectivity. Such valuations are classified within level 2 of the fair value hierarchy.
As of December 31, 2023 and June 30, 2024, the Group recognized derivative asset of US$1,392 and US$2,533, respectively, which were included in prepayment and other current assets in the unaudited interim condensed consolidated balance sheets. For the six months ended June 30, 2023 and 2024, the Group recognized changes in fair value of derivative instruments of a gain of US$275 and US$103, respectively, in the unaudited interim condensed consolidated statements of comprehensive (loss) income.
Fair value measurements
Financial instruments primarily include cash and cash equivalents, accounts receivable, prepayments and other current assets, derivative asset, equity investments without readily determinable fair values, equity method investments, accounts payable and accrued expenses and other current liabilities. The Group carries the investment under the measurement alternative basis and equity method investment on other-than-temporary basis. Derivative asset related to the derivative contracts is measured at fair value based on Level 2 inputs on a recurring basis. The carrying values of other financial instruments approximate their fair values due to their short-term maturities.
The Group’s non-financial assets, including cryptocurrency assets prior to the adoption of ASU 2023-08, intangible assets, goodwill and property and equipment are measured at fair value when an impairment charge is recognized. Fair value of cryptocurrencies is based on quoted prices in active markets.
The Group applies ASC 820 (“ASC 820”), “Fair Value Measurements and Disclosures”. ASC 820 defines fair value, establishes a framework for measuring fair value and requires disclosures to be provided on fair value measurement.
ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:
Level 1— Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.
Level 2— Include other inputs that are directly or indirectly observable in the marketplace.