Token as a Rollup

Problem

- Liquidity fragmented across multiple L2 chains
- Users do not trust new chains and are not willing to provide liquidity there
- Solvers (Market makers) have to keep balances on each chain separately
- If rollup is paused / blocked, all balances are frozen / burned
- Liquidity fragmentation limits ETH scaling

Solution

TAAR implements technique similar to Mutex, well known in concurrency.
Each time, when user wants to interact with dedicated network, he asks mutexes for reading / changing balances. If transaction will try to get access to the balances / allowances without this mutexes, contract will be reverted.