There are a few differences between the two coins as it follows like this: DGB-30 sec blocks vs BTC-10 min blocks, DGB 5 decentralized mining algorithms vs BTC 1 centralized mining algorithm, they have the same amount of coin supply (21 million) but with DGB all 21 million coins will be out in circulation in 20 years while with BTC it will take 140 years. Digibyte has a united community while BTC's community is divided. Digibyte has a known creator (Jared Tate) while Satoshi Nakamoto's identity is still unknown. I hope this helped.