FIP-10 Proposal | How much gas cost can be reduced by releasing 13% of network bandwidth?

In order to solve Filecoin network congestion and reduce the pressure of miners to maintain existing computing power, Filecoin proposed FIP-10. In FIP-10, when a miner submits a WindowPoSt proof message, it can go on the chain without obtaining network verification. This will almost eliminate all bandwidth resources occupied by checking SubmitWindowedPoSt messages, saving about 13% of network bandwidth.

(Proposal of FIP-0010)

However, in order to ensure that miners continue to store user data, third-party verification is introduced in the proposal. Verifiers can use the DisputeWindowedPoSt method to question the correctness of the miners' time and space certification messages.

If the challenge is successful, it indicates that the proof submitted by the miner is problematic. Each sector in the partition that is valid due to the proof submitted by the miner will be punished by IPF, plus a fixed fee FlatFee, and marked as defective (until the submission is correct WindowPoSt), and the verifier will receive a fixed reward DipsuteReward.

Related parameters

• IPF: 5.51BR (IPF is invalid proof fee, BR is the expected block reward for each sector within 24 hours)
• FlatFee: 20 FIL
• DipsuteReward: 4 FIL, the reward includes the expected gas fee for sending disputed messages.

 

What are the advantages compared with FIP-09?

Like the previous FIP-09 proposal, FIP-10 is an adjustment to the cost of maintaining the existing computing power for miners. But the essential difference between the two is that FIP-09 is to cancel the gas cost for successfully submitting the time-space certificate, and only the miners with effective computing power are profitable, and it does not have a positive effect on the entire ecology. 

And FIP-10 is to reduce the sending of messages on the chain, reduce the occupation of network bandwidth resources, so that more and more valuable messages can be put on the chain, and promote the realization of Filecoin network value. 

(Reason for FIP-10 proposal)

 

How much can gas cost be reduced?

In the FIP-10 proposal, the network chooses to "optimistically" accept the miner's proof message, thus eliminating the network resources occupied by the verification message. For miners: 

1. Reduce the pressure of maintaining existing computing power

When maintaining the existing computing power, each sector needs to submit a certification message every day, and the sector computing power can be guaranteed through network verification. This process will consume a certain amount of network resources, time and expenses. According to the FIP-10 proposal, it will greatly reduce the cost of miners in maintaining existing computing power.

2. Reduce the additional cost of computing power

The main reason why the gas fee is so high is caused by network congestion. The FIP-10 proposal can release about 13% of bandwidth resources. Under the condition that the daily increase in computing power remains unchanged, it will definitely reduce the additional computing power Gas fee.

At present, this solution only proposes one direction for improvement, and it also includes the design of incentive measures for verification nodes, optimization certification and other mechanisms. The corresponding solutions also include fast channel and batch verification. The further implementation of the plan awaits our continued attention.

FIP-10 proposal link: https://github.com/filecoin-project/FIPs/blob/master/FIPS/fip-0010.md