[cm/signed/] with GOST R 34.10-2012 with Merkle-tree hashing.
[cm/pub/gost3410] public keys are used.

It is similar to [cm/signed/gost3410], but [cm/hashed/streebog-merkle]
hashing is used.

Its /sigs/*/sign contents:
    sign-gost3410-256A {
        {field . {map}}
        {field a {str} =gost3410-256A}
        {field v {bin} len=64}
    }
    
    sign-gost3410-512C {
        {field . {map}}
        {field a {str} =gost3410-512C}
        {field v {bin} len=128}
    }
    
    sign-gost3410-256A-merkle {
        {field . {map}}
        {field a {str} =gost3410-256A-merkle}
        {field v {bin} len=64}
    }
    
    sign-gost3410-512C-merkle {
        {field . {map}}
        {field a {str} =gost3410-512C-merkle}
        {field v {bin} len=128}
    }