need make hard fork. Pos algorithm
pm me
You probably want to provide more information's like the budget and if you are willing to give funds to an escrow until the job is done or not .
surely, escrow will be done. Budget 0.3btc
Hard fork for what? what are you trying to achieve?
delete few scam addresses
hmm, For Bitcoin?
if it was your own coin, I guess you could stop an address using the network. but that would require consensus of all nodes and also hard fork just to stop addresses is pretty well... pointless. scammers will use another address, you will be always forking.