The MINA blockchain maintains a consistent data size of approximately 22KB, primarily due to its innovative "zero-knowledge proof" (ZK-SNARKs) technology.
Traditional blockchains like Bitcoin and Ethereum experience increasing data size as blocks grow, as each node must store a complete historical transaction record. MINA, however, uses zero-knowledge proof technology to compress blockchain data. Full nodes no longer need to store the entire transaction history, only need to verify proofs, thus keeping the data size extremely small. Specifically, MINA utilizes ZK-SNARKs technology, allowing nodes to prove the validity of their data to other nodes without revealing specific transaction details. Each node synchronizes a tiny cryptographic proof, weighing only approximately 22KB, resulting in the so-called "minimalist blockchain."