Token Transfer

On-Chain Transfer

The Pantos protocol allows the transfer of assets on-chain and cross-chain. To move assets on the same blockchain (no cross-chain transfer), a user has to create a TransferRequest, sign it, and send it to a service node.

The service node uses the transfer function of the Pantos Hub to perform the transfer.

The following figure shows how an on-chain transfer is executed and what entities are involved:

Cross-Chain Transfer

If a user wants to transfer a token from a source chain to a destination chain, they must create a TransferFromRequest, sign it, and submit it to a service node. The service node will use the transferFrom function of the Pantos Hub contract on the source chain.

The following figure shows the steps and entities involved in a cross-chain transfer on the source chain:

As soon the transaction on the source chain is successful, an event is emitted. The Validator is listening to such transferFrom events and once it hears one, it creates TransferToRequest and forwards it to the Pantos Hub contract using the transferTo function. Once this transaction has been successful, the cross-chain asset transfer has been successful.

The following figure shows the steps and entities involved in executing the cross-chain transfer on the destination chain: