Oshi.io is a Japanese style Bitcoin casino which allows players to play all over the world. The Oshi signup bonuses are really unique in the fact that they allow you to build 4 of your own bonuses! Oshi is also an instant play casino which you can signup to in under 30 seconds. This means no waiting around to start playing.
Without further ado, here are the Oshi signup bonuses so you can start playing right away.
Oshi Welcome Bonuses:

First welcome bonus : Build your bonus!
From: 77% match bonus to 0.0586 BTC / 500 EUR & 200 free spins
To: 100% match bonus 0.013 BTC / 120 EUR & 105 free spins

Second welcome bonus:
25% match bonus to 0.04 BTC / 300 EUR or Curr. Equiv. + 30 free spins.

Third welcome bonus:
25% match bonus to 0.04 BTC / 300 EUR or Curr. Equiv. + 30 Free spins.

Fourth welcome bonus:
50% match bonus to 0.04 BTC / 300 EUR or Curr. Equiv. + 30 Free spins.

Fourth welcome bonus:
Upto 290 free spins!