2. Blockchain makes the transaction information of Bitcoin unable to be tampered with or forged.
3. Blockchain is a term in the field of information technology. In essence, it is a * * * database, and the stored data or information has the characteristics of unforgeability, full trace, traceability, openness and transparency and collective maintenance. Based on these characteristics, blockchain technology has laid a solid trust foundation and created a reliable cooperation mechanism, which has broad application prospects.