Bridging Research

FIO

• Javascript

• fiojs

FIO Chain

• Oracle monitors get_actions API on V1 History node

• https://github.com/fioprotocol/fio.oracle/blob/3b1bfd3894e14b18e68f376b3a6bcfdb156c5f83/controller/util.js#L29

ERC20

• Oracle monitors unwrap event for transfers

• https://github.com/fioprotocol/fio.oracle/blob/3b1bfd3894e14b18e68f376b3a6bcfdb156c5f83/controller/api/fio.js#L21

• Minimal validation

• Confirms valid address

• Logs errors to log file

• Oracle does not monitor transactions after submitting

• Rely on user reporting if transaction fails

• Considering development of external transaction monitoring software / Admin UI

• Manual setting of gas limit and gas price in env vars for each oracle

• https://github.com/fioprotocol/fio.oracle/blob/3b1bfd3894e14b18e68f376b3a6bcfdb156c5f83/controller/api/eth.js#L34

Alien Teleport

• Javascript

• eosjs

UI-based approach to teleport wax tokens to your ETH or Binance wallet

WAX Chain

• Listens to the EOSIO chain for teleport actions using a state history node

• UI connects to Wax or Anchor wallet for signing transactions

ERC20

• Monitors teleport events

• Connects to Metamask for signing

• Has a check-eth utility that reports on completion status

• Need to confirm as it was broken when I tried it out: I think the user pays the ETH fees when they claim the teleport