Tofunmi1/hats-contracts

hats vaults audit

Hats-contracts gas optimizations

Gas optimized fork - https://github.com/Tofunmi1/hats-contracts

Initial gas measurement running npm run gas-avg - is 6975095

• after adding optimizations = 6973951

HATVault.sol

SubmitClaim (initial average = 352515, after optimizing = 352411)

• Use ++nonce instead of nonce++ (nonce is a state variable)
  • line 212
• for calculations that wont overflow or underflow, use the unchecked{} block
  • line 208-209
• making a privileged function payable would save gas

challengeClaim (initial average = 63089, after optimizing =63017 )

• for calculations that wont overflow or underflow, use the unchecked{} block
  • line 244

approveClaim (initial average = 410813, after optimizing = 410602)

• for calculations that wont overflow or underflow, use the unchecked{} block
  • line 261
  • line 270
  • line 282

• HATTimeLockController

• making priviledged functions payable would save some gas

approveClaim before adding payable average was 458758

• aftter adding payable average cost is 458734
• saved 24 gas

Doing the same with all the functions in HATTimeLockController.sol, also saved some gas

• HATTokenLock

since the delegate() function is a priviledged function making it payable would save some gas

• line 46

• HATVaultRegistry

logClaim

• in logclaim payable(address).transfer(), would take a constant gas of 21000
  • use address.call instead

swapAndSend (before optimizing = 442149, after optimzing = 442011)

• use very efficient loops in swapAndSend, using unchecked increments, like unchecked {++i;},and dont access an array's length in every iteration(cache the array's length in a local variable

  • line 322
  • line 332

Hats.Finance | Contracts

The Hats protocol is designed to give white hats hackers the opportunity to gain more on their good behaviour and contribution. Trying to tilt the balance of incentives, and incentivizing more hackers to act responsively. It is doing so by letting projects publish on-chain bounties for their protocols, with committees in-charge of approving or rejecting claims. To further increase the efficiency of this model, the HAT token is introduced, to help bootstrap both ends in this two-sided market.

Overview

Usage

Installation:

npm install

Create .env files as needed. There is a file called .env.example that you can use as a template.

Run the tests:

npx hardhat test

Security

Audit reports are in the audit directory.

Please report any security issues you find to contact@hats.finance

Check deployment

npx hardhat run --network {rinkeby|mainnet} scripts/checks/check.js

Contribute

License

Hats.finance is released under the MIT License.