High sky

 Cryptocurrency  A cryptocurrency, crypto-currency, or crypto is a digital asset designed to work as a medium of exchange wherein individual coin ownership records are stored in a ledger existing in a form of a computerized database using strong cryptography to secure transaction records, to control the creation of additional coins, and to verify the transfer of coin ownership.[1][2] Cryptocurrency does not exist in physical form (like paper money) and is typically not issued by a central authority. Cryptocurrencies typically use decentralized control as opposed to a central bank digital currency (CBDC).[3] When a cryptocurrency is minted or created prior to issuance or issued by a single issuer, it is generally considered centralized. When implemented with decentralized control, each cryptocurrency works through distributed ledger technology, typically a blockchain, that serves as a public financial transaction database. Bitcoin Bitcoin, first released as open-source software in 2009,

 Russia was expected to compete at the 2020 Summer Olympics in Tokyo, now postponed to 23 July to 8 August 2021 because of the COVID-19 pandemic.[2] It would have been the country's seventh consecutive appearance at the Summer Olympics as an independent nation, but their athletes will be entered by and represent the “Russian Olympic Committee” and use the acronym “ROC” for a country name. All public displays of the organisation’s participant name should use the acronym “ROC”, not “Russian Olympic Committee”.