The webapp provides for each item the link on ECB's website.
Speeches for : Benoit Coure where "cryptocurrencies" appeared
2019-09-30 : Innovation in payments: Libra, blockchain and crypto-assets2018-10-01 : Interview with Der Tagesspiegel
2018-04-10 : Interview with France Info
2017-10-29 : Interview with Le Journal du Dimanche