Results 2 issues of Vlad

### Description UPD v2 - removed rolling hash, gating logic implemented for being ready with the Nakamoto release (3.0 epoch) UPD - check discussion below, decided to leave the rolling...

### Describe the bug I don't know if it's even possible, but when I try to sign a multisig transaction starting from the third address (out of 3 public keys)...

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