ethhmy-bridge

Ethereum<>Harmony two way bridge (trusted version)

Transferring ERC20 from Ethereum to Harmony

Transferring HRC20 from Harmony back to Ethereum

Execution Plan

Milestone	Components	Trust Requirement	Centralization	Target Date
v1	Smart contracts w/ permissioned mint/unlock	Trusted	Centralized	25 Sept 2020
v2	Smart contracts w/ single relayer hosted by harmony	Semi-trusted	Centralized	TBD
v3	Smart contracts w/ a network of relayers	Trustless	Decentralized	TBD

Setup

Create two ropsten accounts and get test tokens using https://faucet.ropsten.be

Export following variables for ethereum testnet:

ETH_NODE_URL='https://ropsten.infura.io/v3/acb534b53d3a47b09d7886064f8e51b6'
ETH_MASTER_PRIVATE_KEY=<private-key-of-first-account-for-deploying-contracts>
ETH_USER_PRIVATE_KEY=<private-key-of-second-account-for-transferring-across-chains>
ETH_USER=<account-address-of-second-eth-account>
ETH_GAS_PRICE=100000000000
ETH_GAS_LIMIT=4712388

Create two harmony accounts and get test tokens using https://onefaucet.ibriz.ai

Export following variables for harmony testnet:

HMY_NODE_URL='https://api.s0.b.hmny.io'
PRIVATE_KEY=<private-key-of-first-harmony-account-for-deploying-contracts>
PRIVATE_KEY_USER=<private-key-of-second-harmony-account-for-transferring-across-chains>
USER=<hex-account-address-of-the-second-harmony-account>
GAS_LIMIT=6721900
GAS_PRICE=1000000000

Running end to end demo using ethereum ropsten and harmony testnets

node scripts/erc20/end2end.js

Sample output would look like: