After learning how to program attiny10, optimizing it, sleeping it, making work the sw2812b and so much work I have to say goodbye. When was all in a protoboard with all components working perfectly and all coded I only saw one led powered on... I have realised that 32 bytes of ram isn't enought for manage two leds and one clock. I chose the attiny10 because was the only aviable on a sot-23 package without looking so much the ram details.
I have found a nice sustitute, the attiny45 on a TSSOP, measuring 4.3mm * 2.9mm, not bad ;)
I hope that the package arrives soon