I think it's important to note that 50 bit is a far far far cry from 256bit. Classical computers can crack 50bit RSA. SHA256 is orders of magnitude more secure and I'm really still not sure it's possible to crack. 
nostr:nevent1qqs9hce09xrl30j4slahzynp8zsdc3mya8v2jfrdwwyhwk93k009cfsprdmhxue69uhkummnw3ezu6rpwpc8jarpwejhym3wvdhj7q3qzmc6qyqdfnllhnzzxr5wpepfpnzcf8q6m3jdveflmgruqvd3qa9sxpqqqqqqzsxw3gp 

 uhh
RSA bare minimum was 1024 bits, not 2048

768 bits has been cracked with large distributed compute projects

also the cracked key is actually only 11 bits