Spiral, under Jack Dorsey’s Block, which has pledged to make mining more decentralized, supports three developers of Stratum V2 – Matt Corallo, Fi3 and Pavlenex. Other core contributors are Rachel Rybarczyk of Galaxy Digital; 4ss0, who is a pseudonymous developer financed by Foundry; Chris Coverdale, an independent developer financed by BitMEX; and Lorenzo Bonazzi of Summer of Bitcoin, according to the press release.