No. rToken app does not support Ledger. Please remember not to connect APP using Ledger, otherwise your assets will be lost.
2) There is no need to learn the complicated PoS consensus (based on Tendermint) mechanism or staking reward calculation rules. With the rMATIC App, users only need to follow a few steps to deposit MATIC into the rMATIC contract, which will automatically select the best validator for delegation by the profit maximization strategy.
The Polygon networks’ unbonding period is 80 checkpoints, which is around 3~9 days depending on the every checkpoint interval times. In order to make the time suitable for every staker, StaFi chain generally sets the unbonding period of rMATIC at 9 days.
You can swap rMATIC tokens into ERC-20 format at 1:1 ratio through the swapping function in rAsset. Please refer to this guide to swap native rMATIC into ERC20 format: https://docs.stafi.io/rtoken-app/rasset/swap-guide
The rMATIC exchange rate Ci grows with the increase in staking income. It is determined by the total number of MATIC locked in the staking contract Qstk, the total number of redeemed MATIC Qred, the number of staking rewards Qrew, the number of slashes Qslh, the commission rate Rcom, the total number of rMATIC issued M, and the total number of burnt rMATIC N. The calculation formula is as follows:
1) When the rMATIC product is launched, rBridge will support rMATIC two-way cross-chain bridge function from StaFi chain to Ethereum at the same time, so that users can have access to DeFi applications on Ethereum by using rBridge product.
3) StaFi will not only support the circulation of rMATIC in the Ethereum ecosystem but also empower rMATIC’s engagement in the DeFi protocol of Polygon through cross-chain bridge services.
Stake MATIC: N * (StaFi chain Gas Fee + Ethereum Gas Fee), and the payment is made by FIS, StaFi mainnet token.In most cases, N is set to 2.
Unbond MATIC: 0.2% redemption fee(based on the amount of unbonded rMATIC and 10% Staking Reward Commission(based on the total staking rewards generated).
After the user completes the "Redeem" operation, s/he has to wait for around 9 days to get the redeemed MATIC tokens, which will be automatically sent to the users’ designated account after the lock-up period.