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https://www.diariobitcoin.com/index.php/2020/01/14/espana-telefonica-y-parques-cientificos-firmaron-convenio-para-red-privada-de-blockchain-blockpct/
­č笭čçŞEspa├▒a: Telef├│nica y Parques Cient├şficos firmaron convenio para red privada de Blockchain BLOCKPCT