Learning about the blockchain file management system based on the UTXO protocol

Learning about the blockchain file management system based on the UTXO protocol

Short answer questions

What is UTXO? How is it different from the account-based blockchain model?

How does the present invention use the UTXO protocol for file management?

What key information is included in the file transfer transaction?

What is the role of the Redeem conditional decision code? How is it associated with the smart contract?

How to ensure the authenticity and integrity of the file during the file issuance process?

How does the file reading requester prove that he has the reading authority?

Under what circumstances is the file supplement transfer transaction created? What is its role?

How to achieve file destruction? How to ensure that the file is completely destroyed and cannot be recovered?

How does the present invention use the Merkle tree structure to enhance the security of the file management system?

What are the advantages of the present invention in file management? How does it compare with the traditional file management system?

Answer

UTXO (unspent transaction output) is a transaction model in the blockchain that treats the output of each transaction as an input that can be used for subsequent transactions. Unlike the account-based model, the UTXO model does not track account balances, but unspent transaction outputs.

The present invention uses the UTXO protocol to transfer and track file management rights as an asset. Each file is associated with a UTXO, which represents the management authority of the file.

The file transfer transaction contains header information, transaction input value, transaction output value and Redeem conditional decision code. Among them, the transaction input value includes the file viewer, the previous transaction hash value, the file sender signature value, etc.; the transaction output value includes the file recipient address, name, etc.

The Redeem conditional decision code defines the conditions for using UTXO, such as the permission to view, transfer and destroy files. It is usually implemented in the form of a smart contract to ensure that only entities that meet specific conditions can perform the corresponding operations.

During the file issuance process, the file management server hashes the original file information and records the hash value on the blockchain. At the same time, the file transfer transaction contains the signature information of the file issuing authority to ensure the authenticity and integrity of the file.

The file reading requester needs to provide file access information, and the file management server will verify whether it is included in the list of file viewers. In addition, the Redeem conditional decision code may also contain more complex reading permission control logic.

When the file reading requester is not the current recipient of the file, a file supplement transfer transaction needs to be created. This transaction transfers the management rights of the file from the current recipient to the file reading requester and is recorded on the blockchain.

File destruction is achieved by transferring the file management rights to a preset destruction address. The private key of this address can be destroyed to ensure that the file cannot be restored.

The present invention uses the Merkle tree structure to aggregate the hash values ​​of multiple file transfer transactions to generate a root hash value representing the entire file history record. The root hash value is recorded on the second blockchain to verify the integrity and non-tamperability of the file history record.

The present invention uses blockchain technology to realize a decentralized, transparent and traceable file management system, and uses smart contracts and cryptography technology to ensure the security and authenticity of files. Compared with traditional file management systems, the present invention has higher security, credibility and efficiency.

Paper title

Detailed analysis of the advantages and disadvantages of the UTXO model and the account-based model in the file management system.

Explore the role of smart contracts in ensuring file security and realizing complex permission control.

Design a file management system based on the present invention, and explain its architecture, functional modules and workflow in detail.

Analyze the challenges that the present invention may face in practical applications, and propose corresponding solutions.

Explore the application prospects and development trends of blockchain technology in the field of file management in the future.

Glossary

Term Definition UTXO (Unspent Transaction Output) A transaction model in the blockchain that regards transaction output as an input that can be used for subsequent transactions. Blockchain A distributed database that records transaction data and ensures its security and immutability. Smart contract Program code stored on the blockchain that is automatically executed when preset conditions are met. File transfer transaction records transactions for transferring file management permissions, including file-related information, permission control logic, etc. Redeem Conditional decision code Defines the code that uses UTXO conditions, such as permissions for file viewing, transmission, and destruction. File original information Information such as the actual content or storage location of the file. File access information Credentials used to access the original file information, such as URL links, keys, etc. File supplement transfer transaction When the file viewing requester is not the current recipient of the file, a transaction used to transfer file management permissions. Destroy address A special address used to destroy files, whose private key can be destroyed to ensure that the file cannot be restored. Merkle tree A tree data structure used to efficiently verify the integrity of large amounts of data.