In what year and in which Bitcoin improvement proposal Opcodes such as OP_MODE have been disabled? On Bitcoin wiki several opcodes are listed as &quot;disabled&quot;.
My question is simple: which Bitcoin improvement proposal proposed to disable them, and when they have effectively been disabled in the past?
I'm particularly interested in the OP_MOD arithmetic opcode.
It appears many unused opcodes were disabled in 2010 for security reasons (at least OP_CAT) or as a security precaution (many others).
Pseudonymous commented that the first BIPs didn't start until 2011 - a year later.