System pools accumulate tokens for further re-distribution accordingly to conditions specified in system smart contracts. Every pool is the special account accessible only by system smart contracts, technically implemented as a field in
Filled with tokens by AST issuing procedure (details described in Ace Stream Token)
Initially, all tokens in this pool are locked and cannot be used by any accounts until they are unlocked by smart contract Unlock System Tokens
Accumulates transaction processing fees, is not a subject of re-distribution for now, but will be periodically re-distributed between second layer validators in the future.