# Contracts
The EVM Compatible smart contracts underpinning the infrastructure offer the transactional and integrity layer of the functionality.
> Note: These contracts are under development, use at your own risk.
*\*Deployment Gas fees*
#### Method Costs
These are the costs measured on the Goerli and Sepolia testnets. The gas limits are hardcoded for Hedera since the network doesn't have a gas estimation function currently.
| | Methods | Approx Gas | Gas Limit |
| ------ | ------------------ | ---------- | --------- |
| Wallet | registerKeys | 684,397 | 700,000 |
| Wallet | setValue | 137,643 | 200,000 |
| Wallet | setFileIndex | 90,313 | 100,000 |
| Wallet | setCredentialIndex | 90,313 | 100,000 |
| Vault | deposit | 552,191 | 600,000 |
| Vault | withdraw | 374,927 | 400,000 |
| Vault | createRequest | 1,152,414 | 1,200,000 |
| Vault | acceptRequest | 618,821 | 650,000 |
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