How It Works
Glossary
MOS relay
MOS relay is the main contract on MAP Relay Chain, which is mainly responsible for handling everything on MAP Relay Chain. Its main functions are as follows:
Handle users' cross-chain transfers
Handle the cross-chain transfer of the Maintainer
Responsible for calling the LightNodeManager contract to verify the message and analyze related events
Responsible for the transaction forwarding of other chain MOS contracts
Responsible for managing the issuance and recovery of tokens and Vault rights of tokens
Responsible for the processing of handling fees
MOS
MOS is the main contract on the source chain. It is mainly responsible for processing things from MAP Relay Chain. Its main functions are as follows:
Handle users' cross-chain transfers
Handle the cross-chain transfer of the Maintainer
Responsible for calling the LightNode contract to verify the things on the MAP Relay Chain, and analyze related events
Vault
Vault is an equity token contract corresponding to each cross-chain token, and its main functions are as follows;
Pledge the user's liquidity and issue the equity token VToken
Record cross-chain fees and distribute them equally to liquidity providers
Extraction and transfer of liquidity
Fee
Fee is a collection and management contract for user cross-chain fees, which is distributed in the MOS Relay contract. Its main functions are as follows:
Set the fee distribution ratio of vault, relay and protocol
Set the charging standard of the handling fee
Proof verification
Proof verification is to prove the proof to confirm that the cross-chain data is legal. The general verification process is encapsulated in LightNode, and the process is as follows:
Prove that Proof can be verified in the transaction body
Prove that the transaction body can construct ReciptRoot
Prove that ReciptRoot is in the header
Verify the validity of the Header according to the Header collection stored in the LightNodeds
How it works
Token transfer
transfer out
The main process of cross chain transfer out is as follows:
User authorized asset deduction
The user calls the contract to specify the cross chain chainId and quantity, and the contract deducts the corresponding quantity
The contract maps the token of the target chain and calculates the service charge and quantity (MOS Relay) deducted according to the token decimal
Deduction of handling charges and distribution according to TokenRegister registration information (MOS Relay)
Generate the out information into the order and the transferOut event output
transfer relay
The main process of the Maintainer monitoring information transferring out and calling the corresponding transferIn is as follows:
Scan MOS/MOS Relay's transferOut event
Generate corresponding Proof according to Event and Chain
Form the proof data and event into the transferIn of the transaction call target chain
transfer in
The main process of cross chain transfer in of maintainer is as follows:
Proof verification
Parse the corresponding transOut data
The contract maps the token of the target chain and calculates the service charge and quantity (MOS Relay) deducted according to the token decimal
Deduction of handling charges and distribution according to TokenRegister registration information (MOS Relay)
Judge whether it is a transfer to the MAP Relay Chain, if it is the next step, and if it is not the order generated from the out information and the transferOut event output (MOS Relay) generated
Transfer out cross chain assets to users
Vault deposit
deposit out
The main process of MOS chain user pledge liquidity is as follows:
User authorized asset deduction
The user calls the contract to specify the cross chain chainId and quantity, and the contract deducts the corresponding quantity
Generate the disposition information into an order and generate the disposition Out event output
deposit in
The initial application process of MOS (Maintainer) pledge liquidity is as follows:
Proof verification
Resolve the corresponding depositOut data
The initial process for MOS Relay chain users to pledge liquidity is as follows:
User authorized asset deduction
The user calls the contract to specify the cross chain chainId and quantity, and the contract deducts the corresponding quantity
The process behind MOS (Maintainer)/MOS Relay is as follows:
Generate the corresponding equity token Vtoken to the user according to the quantity pledged by the user
Generate the corresponding depositIn event
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