WeiBridged contracts

-MSG.VALUE to MSG.VALUE bridge logic

-Queue in Solidity pushes new user who locked tokens, then serves them first to be bridged, then removed from queue (Goerli to Optimism path)

-Added 0.3% bridge fee paid to contract Owner

-Able to use Geth and Prysm Goerli synced node locally to read and write to Goerli blockchain

-Tested example queue logic library in contract

-Hardhat unit test mock :

MSG.VALUE to MSG.VALUE

MSG.VALUE to WRAPPED

Chainlink Keepers Automated Unlock Mock Contracts on Goerli:

MSG.VALUE

Goerli

https://keepers.chain.link/goerli/109431267378997881710933877235655656265820581519043501350440192241368993617095

Automated Unlock Tx:

https://goerli.etherscan.io/tx/0x761d4962c119b335fc82c2206faa59f84c3f97df0796f7bb1da00f40401cd9f5

Mock Optimism

https://keepers.chain.link/goerli/72481870100616413524543533122208944145202375451493878672180918931194008905864

Automated Unlock Tx:

https://goerli.etherscan.io/tx/0x549282792805cc202bb1fe02fbe927f25895ef93e134ef24bd87009157d780d5

Wrapped

Goerli MATIC

https://keepers.chain.link/goerli/44672928778541736436187787576552467984358095279622653917887023890049197297829

Automated Unlock Tx:

https://goerli.etherscan.io/tx/0x952bb7909626b4417151475492bd393605ed5b67cbb33312c3867bd109a4215a

Mock Mumbai WETH

https://keepers.chain.link/goerli/51328062644048824879005793848957573415939904013643902837116609648852103753257

Automated Unlock Tx:

https://goerli.etherscan.io/tx/0x9f85aa14eae532d1a7952b7eb0d5bf8acd50b12e314d9725f58ff864e507ad0b

⚠️ Ideally we use CCIP and Chainlink Keepers, but CCIP is still in development as of writing. ⚠️

WeiBridged

Polygon Mumbai and Ethereum Goerli

https://mumbai.polygonscan.com/address/0xb7307ddd7c370a309db38243258318cbb5e1860c https://goerli.etherscan.io/address/0xe33EE68Fc5477Ea95F4897b67d3E763b7F74FC52

Optimism Goerli and Ethereum Goerli ( ⚠️ Optimism Goerli Explorer has delayed balances for user getting ETH ⚠️ )

https://blockscout.com/optimism/goerli/address/0x430e0d957313D454c9B2496dc1F27D06Ea617CaE https://goerli.etherscan.io/address/0xaED1aC1429EAB4569e218b2aD1A585146fCdE061

⚠️ We did not write the Golang communication for the chains below and we assume MSG.VALUE == MSG.VALUE. Cotract logic should be the same with MSG.VALUE == MSG.VALUE. If we had more time during the ETHOnline 2022 hackathon we would write out all logic for each RPC chain. ⚠️

Aurora Testnet and Ethereum Goerli

https://testnet.aurorascan.dev/address/0x8bac6b3b0e8989496b0fa7c242d52908aeedcc36 https://goerli.etherscan.io/address/0x84959b9c82fa26fe95ba5c7ebe21a409b501a742

Oasis emerald Testnet and Ethereum Goerli

https://testnet.explorer.emerald.oasis.dev/address/0xbFB26279a9D28CeC1F781808Da89eFbBfE2c4268/transactions https://goerli.etherscan.io/address/0xde89f4557a7a224cb7d7d361477ca8e96b3b0be7

Cronos Testnet(TCRO)

https://cronos.org/explorer/testnet3/address/0xbFB26279a9D28CeC1F781808Da89eFbBfE2c4268 https://goerli.etherscan.io/address/0x834665566fbc3a9127c939bea8230fcd44ede4db

Shardeum Liberty 2.0 and Ethereum Goerli [some contracts need EIP-2930 accessList address and storage data to work on other shards!]

https://explorer.liberty20.shardeum.org/account/0x9e5fb5182000b8b21b16d62fc2d04148613ca7b1?page=1 https://goerli.etherscan.io/tx/0x85c213f0f417e7b3a387300706d8404f15e81e934ae89871f2cd54805f86b66d

📹 Video presentation:

https://www.youtube.com/watch?v=CDvfHBMuirQ&ab_channel=Singularity2045

📷 Presentation Slides:

https://docs.google.com/presentation/d/1HV73K2lnuzfmi5FZIEtFoYzBK6tn95W-jIeFuBpkRb0/edit?usp=sharing

Hardhat Testing

⚠️ When you deploy mock contracts, update the contracts to point at each other's addresses with functions like "mockOwnerOptimismBridgeAddress". ⚠️

Bridge design patterns research

https://ethereum.org/en/developers/docs/bridges/#how-do-bridges-work