On-Chain Dynamic Merkle Tree

This project implements an on-chain dynamic Merkle tree library with some examples. The key features are:

• efficient updating/appending a node in the tree with O(1) storage write cost;
• example javascript code to generate Merkle proof for updating/appending (in test/);
• examples of Merkelized Staking and Merkelized ERC20.

To Play

Try running some of the following tasks:

npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
npx hardhat help
REPORT_GAS=true npx hardhat test
npx hardhat coverage
npx hardhat run scripts/deploy.js
node scripts/deploy.js
npx eslint '**/*.js'
npx eslint '**/*.js' --fix
npx prettier '**/*.{json,sol,md}' --check
npx prettier '**/*.{json,sol,md}' --write
npx solhint 'contracts/**/*.sol'
npx solhint 'contracts/**/*.sol' --fix

Cross L2 Bridge Example

This project implements an token transfer between two arbitrum instances using Dynamic Merkle Tree

To Play

Try running some of the following tasks:

npm run arb_bridge_deploy

Deployed Contracts on Arbitrum Testnet

• L1 Bridge: 0x972096D19c43aAdFaBA7C433bF33f34be568330F
• L2 Bridge Source: 0xc31dB9BC7d5bfD1e0aEBe936b20E025831bCb3Be
• L2 Bridge Destination: 0xa4f7e85327BE5648488844A85a00197af9ef136a
• L2 Token Source: 0x1158F18eFe4DAF4e71b31b077b340927A8A9f5Ef
• L2 Token Destination: 0x68e7155dF845635DF488fdED81BFC76C8210FBB2

Deployed Contracts on Optimism Testnet

• L1 Bridge: 0x5095135E861845dee965141fEA9061F38C85c699
• L2 Bridge Source: 0x5095135E861845dee965141fEA9061F38C85c699
• L2 Bridge Destination: 0xcC3C762734E54F65c7597Db7c479164fC6C3dFA0
• L2 Token Source: 0xd36AD433b356b304442d23b884bed706Cdf49583
• L2 Token Destination: 0xB515eb506C43C468F616fa0Ad9BD4B94B90B71e9

Disclaimer

The code is not audited. USE AT YOUR OWN RISK.