MEXICO CITY — El Salvador on Tuesday became the first country to adopt Bitcoin as legal tender, allowing the cryptocurrency to be used in any transaction, from buying a cup of coffee to paying taxes.The bold move, largely celebrated by the international bitcoin community, has found a more skeptical reception at home and in the traditional financial world, amid concerns that it could bring instability and unnecessary risk to the Central American country’s fragile economy.President Nayib Bukele, a tech-savvy millennial, has promoted the digital currency’s adoption, pitching it as a way of bringing more Salvadorans, about 70 percent …
