The article described by the following json
{"title": "Porretta Prog Legacy, tre giorni di musica progressive sull'Appennino bolognese", "summary": "Dal 3 al 5 luglio con Of New Trolls, Arti Mesteri e L'Uovo di Colombo", "date": "Mon, 29 Jun 2026 10:43:27 +0200", "link": "https://www.ansa.it/sito/notizie/cultura/musica/2026/06/29/porretta-prog-legacy-tre-giorni-di-musica-progressive-sullappennino-bolognese_3b96be6f-df98-4392-9ad7-32ace9427dff.html"}
with the following SHA256 17da0c4ccb8c31b957668708ca6bac128bce0d01ff9612bc1656c24f5b8c902d was timestamped in the Bitcoin blockchain using the Opentimestamps protocol.