www.garrigues.com/en_GB/new/bank-spain-puts-place-new-register-virtual-currency-exchange-providers-and-custodian-wallet
www.garrigues.com/es_ES/noticia/banco-espana-habilita-nuevo-registro-proveedores-servicios-cambio-custodia-moneda-virtual
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Spain: Registry opened for crypto-exchanges and custodian wallet providers – Global Compliance News