Reducing Blokchain Size Using Complementary Block

The size, especially the growth rate, of blockchain has been a major problem since its introduction in 2008. A common blockchain scheme will have exponential growth rate that affect the scalability of blockchain. To overcome this problem, complementary block is proposed. The blockchain is split into multiple chain where each block in a chain is a complementary of a block in another chain. The result shows that complementary block have smaller growth rate compared to original blockchain scheme. Despite its small data duplication, the complementary block still retains the same integrity level as the original blockchain.