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This effort prototypes a simplified end-to-end flow of FIO Wrapping.

Use case

Wrap FIO Token:

  1. Alice (dApp) executes wraptokens on FIO chain

  2. Oracle monitors wraptokens for transfers

  3. Oracle executes ERC20 _mint

  4. Oracle executes ERC20 approve

  5. Alice (dApp) calls ERC20 balanceOf to get balance

  6. Alice (dApp) executes ERC20 transferFrom

Assumptions

  • Assume there is a single Oracle managing all transactions. Do NOT worry about multisigs, approvals, etc.

  • No validation on either chain is required.

Diagram link: https://drive.google.com/file/d/12f8iOoZjj1txZCJprpuQ5VFb8Ejpc9Bp/view?usp=sharing

Deployment

  • fio.wrapping: contract deployed to DEV server with V1 History (eventually will move to Hyperion)

  • oracle: daemon running on server

  • ERC-20: open zeppelin contracts on Ropsten testnet

TBD

  • How will Alice execute the transfer? Need a dApp.

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