{"type":"rich","version":"1.0","author_name":"SaberhagenTheNameless (npub14a…yz6rn)","author_url":"https://nostr.ae/npub14a6q6xvt4wuv0wpdpfr336e4fweldtu6np3ehpw55h83xuw2h2zsgyz6rn","provider_name":"njump","provider_url":"https://nostr.ae","html":"No it wasn't. You mean the selfish mining attack. Reorgs from an attacker start happening well below 51% and every PoW blockchain is vulnerable to it."}