func GetBlock(hash hash.Hash) *Block {
	return &Block{
		Hash: base64.URLEncoding.EncodeToString(hash.Sum(nil)),
	}
}
func GetBlock(hash hash.Hash) *Block {
	return &Block{
		Hash: base64.URLEncoding.EncodeToString(hash.Sum(nil)),
	}
}
func GetBlock ( hash hash . Hash ) * Block { return & Block { Hash : base64 . URLEncoding . EncodeToString ( hash . Sum ( nil ) ) , } }
// GetBlock encodes a hash into a readable format in the form of a Block.
GetBlock encodes a hash into a readable format in the form of a Block .