warifp/swisstronik-eth-get-storage-challenges

Swisstronik Challenge ETH getStorage

In this project, there are sample contracts, tests, and scripts that deploy contracts, as well as the Swisstronik blockchain network. This case demonstrates the basic usage of Hardhat.

Task

Make a JSON RPC call using eth_getStorageAt() to get the first storage variable (slot #0) of any deployed smart contract and explain what is the retrieved value or if there is any difference with other blockchains when using this RPC method.

Usage

Installation Package

npm install

Network: Swisstronik

Request

npx hardhat run scripts/getStorage.js --network swisstronik

Response

{
  contract: '0xf84Df872D385997aBc28E3f07A2E3cd707c9698a',
  slotNumber: 0,
  rpcURL: 'https://json-rpc.testnet.swisstronik.com/'
}

Response:
Storage Value at Slot 0: 0x0xc73e7f645a2bf1365a0903afa03a2cb5029ba989df7844b0fe7751b1ba918ea4

Network: Ethereum Sepolia

Request

npx hardhat run scripts/getStorage.js --network sepolia

Response

{
  contract: '0xf84Df872D385997aBc28E3f07A2E3cd707c9698a',
  slotNumber: 0,
  rpcURL: 'https://rpc.sepolia.org'
}

Response:
Storage Value at Slot 0: 0x0x0000000000000000000000000000000000000000000000000000000000000000

Network: Polygon Mumbai

Request

npx hardhat run scripts/getStorage.js --network mumbai

Response

{
  contract: '0xf84Df872D385997aBc28E3f07A2E3cd707c9698a',
  slotNumber: 0,
  rpcURL: 'https://polygon-mumbai.blockpi.network/v1/rpc/public'
}

Response:
Storage Value at Slot 0: 0x0x0000000000000000000000000000000000000000000000000000000000000000

Smart Contract

0xf84Df872D385997aBc28E3f07A2E3cd707c9698a 

Conclusion

Here I use the ethers v6 package. and the difference between the Ethers v5 and v6 packages is in the Get Storage Function

Ethers v5

getStorageAt()

Ethers v6

getStorage()