https://www.reuters.com/article/el-salvador-bitcoin-bitso/crypto-platform-bitso-working-with-el-salvador-on-chivo-digital-wallet-idUSKBN2G31HU

Fintech Bitso, a cryptocurrency platform, said on Tuesday it will be the core service provider for Chivo, the bitcoin digital wallet launched in El Salvador as it becomes the first country in the world to adopt bitcoin https://www.reuters.com/business/finance/el-salvador-leads-world-into-cryptocurrency-bitcoin-legal-tender-2021-09-07 as legal tender.