Thanks for the replies. I don´t have a full synced node. I don´t know where to execute the commands of the chainquery page, in the console? Do i have to download something to make it work? Slushpool because I want to make a miner using an altera FPGA with a Raspberry Pi 4. My plan is to gather said parameters with the Raspberry and use it only as a communication device (the FPGA would do all the mining). But I don´t know how to request the block header information from the Slushpool page from the Raspberry to give it to the FPGA. The FPGA would mine the block, return the proof of work to the RPi and the RPi would submit said proof to the Slushpool page. I don´t know if I am missing something. The other way would be to request the block header information from the blockchain page, pass it to the FPGA, then the FPGA would return the proof to the RPi and the RPi would submit the proof to the Slushpool page, however I can´t find in which part (code, section) I have to submit this informaion on the Slushpool page. Would this way be more correct?