Contract address for this test:
https://rinkeby.etherscan.io/address/0x376f029b4ed9096c845453306731d14e9886d79a
Points covered in this practical class:
- How to mint NFT and trade copies of the contract without the contract being open source.
- How to bypass the quantity limit of minting.
- How to interact on-chain directly through HEX Data.
Q1. Identify the missing component that prevents direct interaction with the contract on ethscan:#
A: ABI
Q2: Write the HEX DATA (hexadecimal data) you used for interaction, in the order of the parameters, one parameter per line.#
A:
mint:
0x1b2ef1ca (Method ID)
0000000000000000000000000000000000000000000000000000000000000000 (uint256 id)
0000000000000000000000000000000000000000000000000000000000000001 (uint256 amount)
Prototype: mint(uint256 id, uint256 amount)
The function hash value can be obtained by using keccak256("mint(uint256,uint256)") (1b2ef1ca104ec753c817f038e7e2a0c7cb28cc3c0877c7c2b78e5a14a407a623), and taking the first four bytes gives the function ID 0x1b2ef1ca.
safeTransferFrom:
0xf242432a (Method ID)
address from
address to
0000000000000000000000000000000000000000000000000000000000000000 (uint256 id)
0000000000000000000000000000000000000000000000000000000000000001 (uint256 amount)
`000000000000000000000000000000000000000000000000000000000000