I have a solidity smart contract like this pragma solidity >=0.7.0 <0.9.0; can I still import SafeMath even if it's not needed for 0.8+ ? Since SafeMath is working with 0.7, but my contract s...

When using debug_traceCall, I get a low-level EVM trace of all opcodes and state changes during the execution. This is excessively detailed. When I use default callTracer, I can get a much nicer ca...

I want to build a Solidity smart contract in RSK and Ethereum that pays dividends every year. Should I use the block time or can I rely on the block number, assuming a the current average inter-blo...