Blockchain anonymous token exchange method and system

Glossary

Term definition Blockchain is a computer-based decentralized distributed system that implements consensus electronic ledgers in the form of blocks. Transaction is a data structure containing at least one input and at least one output, which records the transfer of value on the blockchain. Unspent transaction output (UTXO) is the portion of a transaction output that has not been used as an input for other transactions. Redeem script is a small program embedded in a transaction output that specifies how and by whom the output can be spent. Smart contract is a computer program designed to automatically execute machine-readable terms of transactions or agreements. Token is a digital asset that represents or references a real-world entity on a blockchain. Colored Coin is a token associated with a specific asset or right that can be used to transfer asset ownership on a blockchain. Asset Controller is an entity that has control over a specific asset, which can be a person or computer resource. Unfinished Transaction is a transaction that lacks necessary information (such as a cryptographic signature) and cannot be accepted by the blockchain network. Notification Address An address embedded in a blockchain transaction script that receives notifications related to that transaction. Autonomous Computational Agent A computer program or system that is able to perform a specific task without human intervention. Short Answer Questions

What are the core features of blockchain technology? Blockchain technology is a decentralized distributed ledger technology with core features such as decentralization, transparency, security, and immutability.

What is UTXO? What role does it play in blockchain transactions? UTXO is an unspent transaction output and is the basic unit of blockchain transactions. In a transaction, inputs reference previous UTXOs and outputs create new UTXOs, thereby achieving value transfer.

What is the difference between smart contracts and traditional contracts? Smart contracts are codes stored on the blockchain that can automatically execute predefined rules and terms without third-party intervention, while traditional contracts rely on laws and third parties for execution.

What are colored coins? How can they be used for real-world asset transactions? Colored coins are digital tokens associated with specific assets or rights that can digitize real-world assets and trade them on the blockchain to simplify the transaction process.

What does the "asset controller" mentioned in the article refer to? An asset controller is an entity that has control over a specific asset. It can be an individual, an institution, or a smart contract that is responsible for managing and operating the asset.

Why is it necessary to generate "unfinished transactions"? Unfinished transactions are generated to distribute asset returns to owners without disclosing information about asset owners.

How are "unfinished transactions" "completed"? After receiving the unfinished transaction, the asset controller adds the necessary cryptographic signature and broadcasts it to the blockchain network to complete the transaction.

What is the role of the "notification address" mentioned in the article? The notification address is used to receive notifications related to a specific blockchain transaction, such as the generation and completion of unfinished transactions.

Why is it necessary to embed the "notification address" in a blockchain transaction? Embedding the notification address in a blockchain transaction ensures that notifications can be sent to the asset owner without knowing other information about the asset owner.

What are the main advantages of the present invention? The present invention enables automatic payments on the blockchain without maintaining an independent off-chain ownership database, while protecting the privacy and security of the asset owner.

Essay questions

Analyze the application of blockchain technology in the real world in detail and explore the challenges and opportunities it faces.

Explain the working principle of smart contracts and give examples of its application scenarios in different fields.

Discuss the advantages and risks of digitizing real-world assets and using blockchain for transactions.

Analyze the characteristics and applicable scenarios of different types of blockchain platforms (such as public chains, private chains, and consortium chains).

Evaluate the advantages and disadvantages of the present invention in terms of security, efficiency, and privacy protection compared to existing technologies.