In the past, one of the most critical and ever-present problems in any transaction is the lack of trust between contracting parties. This has prompted humans to originate ideas to arrange for transactions in various forms, creating subsequent practices, procedures, and laws, such as the use of ledger, trusted third parties, legislation etc. From then on, technologies and innovations have quickly and dramatically changed the context of societies all around the world. Blockchain is one of such technologies that are developed to tackle the aforementioned problem of trust between contracting parties, relying on a simple but structurally complex principle that allows every individuals to enter into a transaction with optimal security and transparency. This is because the data saved in the blockchain network cannot be changed or tampered with, and is fully traceable. Blockchain eliminates the reliance on third parties, which significantly reduces risk and costs of a transaction, while the technology itself has great potential to be applied and employed further in various fields. Unsurprisingly, such technology has been at the center of global attention given its ability to revolutionize the entire business world. At present, blockchain technology has been adopted both in Thailand and abroad to an appreciable extent. The authors believe that this blockchain technology will fundamentally change the form and nature of contracts to an unprecedented degree. Therefore, it is imperative that lawyers today understand and anticipate blockchain technology in order to be able to interpret and proceed with legal processes appropriately and fairly in the best interest of maintaining social justice, irrespective of the approaching social changes.