Returns the Solidity source code of a verified smart contract. Also available through a GraphQL ‘addresses’ query.
Optional API key for increased rate limits.
Without API key:
With API key:
Usage: Add apikey=YOUR_KEY to any request query string.
Module name (must be 'contract')
contract getsourcecode Contract address 40-character hexadecimal address hash with 0x prefix
"0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae"