Blockchain cross-chain interactive domain name management

Term definitionBlockchain is a distributed database that uses cryptography to ensure data security and immutability. Distributed ledger system (DLS) is also called a consensus network, which allows multiple parties to store and share data securely and immutably. Consensus network is a network composed of peer-to-peer nodes that achieves data consistency through a consensus mechanism. Public blockchain is a blockchain network open to everyone, and anyone can participate in transactions and consensus processes. Private blockchain is a blockchain network controlled by a specific entity, with limited participants and permissions. Consortium blockchain is a blockchain network jointly managed by multiple institutions, with participants and permissions determined by consortium members. Client node is a device or software program that connects to and interacts with a blockchain network. Chain identifier is a unique identifier for a blockchain instance, such as the hash value of the genesis block. Blockchain domain name is a human-readable label used to identify a blockchain instance, similar to a domain name on the Internet. Unified blockchain domain name (ens) is a unique identifier that binds a blockchain domain name to its corresponding chain identifier. Certificate Authority (CA) is a trusted entity responsible for issuing and managing digital certificates. Domain certificate is a certificate issued by CA to the owner of ens to prove his ownership of the blockchain domain name. ens message is a message containing ens, the owner's digital signature and the domain certificate, which is used to verify the validity of ens. Relay is a node or network that connects different blockchain instances for cross-chain interaction. Cross-chain transaction is a transaction involving multiple blockchain instances.

Short answer question

Briefly describe what is a unified blockchain domain name (ens) and its role.

ens is a unique identifier that binds a blockchain domain name to its corresponding chain identifier, which is used to uniquely identify each blockchain instance in a blockchain network. The role of ens is to simplify cross-chain interactions in blockchain systems because it provides a globally identifiable address that is not dependent on a specific platform, technology or relay.

How does ens help users access blockchain instances more conveniently?

ens contains a human-readable label that is easier for users to remember and identify, similar to domain names on the Internet. In contrast, chain identifiers are usually long strings of numbers and letters that are difficult to remember and distinguish.

Explain the relationship between blockchain domain names and chain identifiers in ENS.

ENS creates a one-to-one mapping between blockchain domain names and chain identifiers. Blockchain domain names are human-readable labels, while chain identifiers are underlying network configuration information used to access blockchain instances.

What role does the certificate authority (CA) play in the ENS management scheme?

The CA is responsible for issuing domain name certificates to ENS owners to prove their ownership of blockchain domain names. Domain name certificates contain the blockchain domain name, the owner's public key, and the CA's digital signature.

Describe the process of verifying ENS messages.

The process of verifying ENS messages includes: verifying that the domain name certificate is issued by a trusted CA, and verifying that ENS is signed by the ENS owner using his private key.

How do client nodes use ENS to perform cross-chain transactions?

Client nodes can obtain the corresponding chain identifier based on the blockchain domain name in ENS, and then use the chain identifier to connect to the target blockchain instance and perform cross-chain transactions.

How does ENS remain unchanged after the blockchain network configuration changes?

The blockchain domain name in ENS can remain unchanged when the underlying network configuration of the blockchain instance changes. The ens owner can update the mapping between the chain identifier and the blockchain domain name and publish the updated ens message.

What is the role of the relay in the ens solution?

The relay connects different blockchain instances and resolves the corresponding chain identifier according to the blockchain domain name in ens, thereby realizing cross-chain interaction between different blockchain instances.

What are the advantages of the ens solution compared to other cross-chain solutions (such as COSMOS)?

The ens solution provides a globally identifiable blockchain instance identifier, while the identifier in COSMOS is only valid in a specific relay chain network. The ens solution simplifies cross-chain interaction because it does not require maintaining different identifiers for each relay chain network.

How does the ens solution improve the security of cross-chain interaction?

The ens solution uses PKI and digital certificates to ensure the authenticity and integrity of ens. By verifying the domain name certificate and the digital signature of the ens owner, malicious entities can be prevented from forging ens and attacking.