bitcoin algorithm is sha256 or sha256d？

[myapple]

so which algorithm miner required for solo mining

[aleksej996]

so which algorithm miner required for solo mining

sha256d is the answer.
To save others time searching for what sha256d is, it is just sha256 done twice, so "d" probably stands for "double".

Bitcoin PoW algorithm is double sha256, just like it uses double sha256 for computing transaction hashes.