Consider create a type for signature and having constraints for each type as well.

[github-actions]

pocket/shared/crypto/keys.go

Lines 10 to 15 in d552ec6

	// DISCUSS Consider create a type for signature and having constraints for each type as well.
	type Address []byte
	type PublicKey interface {
	Bytes() []byte
	String() string

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This issue was generated by todo-issue based on a DISCUSS comment in d552ec6.