Pierre Rochard: “Until your altcoin successfully defeats a coordinated attack like NYA/S2X, with 90{c02dde72df927a7b1629fc29506cd3151b0442defda0d37a402db978ff19aaf8} of the hashrate and major businesses trying to force a hard fork, its immutability is untested and its monetary policy is suspect. Bitcoin has earned its keep, its immutability is beyond question”