Blockchain transaction security method for media content

Blockchain transaction security method for media content

Glossary

Term definitionBlockchainA distributed ledger technology used to record all transaction information and ensure information security and immutability. StreamChainA new blockchain architecture that supports updates to past blocks and the selection of higher quality media data versions. Cryptographic hashing uses a cryptographic algorithm to convert data of any length into a fixed-length hash value, which is used to ensure data integrity and security. Non-cryptographic hashing uses a non-cryptographic algorithm to convert data of any length into a fixed-length hash value, which is mainly used for fast search and data similarity comparison. Audio fingerprintA set of unique feature values ​​extracted from an audio signal, used to identify and retrieve audio content. MetadataData that describes data, such as the title, artist, album, etc. of an audio file. Merkle Patricia tree (Trie)A tree-like data structure used to efficiently store and retrieve key-value pairs of data. Block headerA part of each block in the blockchain that contains metadata information about the block, such as the hash value of the previous block, timestamp, etc. TransactionThe basic unit of operation on the blockchain, such as transfer, deployment of smart contracts, etc. Mining is the process of verifying and adding new blocks to the blockchain by solving complex mathematical problems. A smart contract is a piece of code stored on the blockchain that can be automatically executed when certain conditions are met.

Short answer questions

What is blockchain? How is it different from a traditional database?

Blockchain is a decentralized distributed ledger technology used to record all transaction information. Unlike traditional databases, blockchain data is stored on multiple nodes, there is no centralized management agency, and the information is more secure, transparent, and cannot be tampered with.

What is the difference between cryptographic hashes and non-cryptographic hashes? Why do we use non-cryptographic hashes in blockchain transactions based on media content?

Cryptographic hashes are mainly used to ensure the integrity and security of data, while non-cryptographic hashes are mainly used for fast lookup and data similarity comparison. In blockchain transactions based on media content, the use of non-cryptographic hashes can better handle audio and video data because even if the data is slightly different, such as noise, non-cryptographic hashes can identify similar content.

What is an audio fingerprint? How to use it in blockchain transactions?

An audio fingerprint is a set of unique feature values ​​extracted from an audio signal that is used to identify and retrieve audio content. In blockchain transactions, the hash value of the audio fingerprint can be stored on the blockchain to verify the copyright and authenticity of the audio content.

How is it different from traditional blockchains?

A new blockchain architecture that supports updates to past blocks and can select higher-quality versions of media data. Unlike traditional blockchains, it is more flexible and can handle audio and video data better.

How to update past blocks?

If a higher-quality version of media data is found, its non-encrypted hash value can be used to compare with the previous block. If the similarity reaches a threshold, the new version can be added to the blockchain and marked as an update of the old version.

How to use a blockchain system based on media content to verify the identity of users?

Users can be asked to provide a piece of audio or video as proof of identity when trading. The system can extract the fingerprint of the audio or video and compare its hash value with the user's identity information previously stored on the blockchain to verify the user's identity.

How can blockchain systems based on media content prevent attacks?

There are many ways to prevent attacks, such as multi-factor authentication, voting mechanisms, etc. In addition, since non-encrypted hash algorithms have certain collision resistance, the difficulty of attacks can also be increased.

In what scenarios can the blockchain system based on media content be applied?

The blockchain system based on media content can be applied in multiple fields such as copyright protection, content distribution, and digital identity authentication. For example, it can be used to protect the copyright of digital works such as music, videos, and pictures, and it can also be used to build a decentralized content platform.

What is the future development trend of the blockchain system based on media content?

In the future, the blockchain system based on media content will be more mature and complete, and will be deeply integrated with technologies such as artificial intelligence and big data to provide users with safer, more convenient, and more efficient services.

In this study, which technologies can be used to generate audio fingerprints?

This study mentions a variety of technologies that can be used to generate audio fingerprints, including EchoPrint, ChromaPrint, Landmark, etc. In addition, non-encrypted hash algorithms such as MurmurHash, CityHash, and Locality Sensitive Hashing can also be used to generate audio fingerprints.