What are the cross-chain infrastructure projects? Cross-chain infrastructure projects and currency inventory

As a network, blockchain is almost equivalent to the Internet in the 1980s. Because the ecology is extremely fragmented, applications, users and funds are all separated in different network systems.

Cross-chain bridges are of course a very important solution, but they should not become the norm. Real large-scale adoption of blockchain requires core protocols and APIs.

Vitalik, the founder of Ethereum, once summarized three cross-chain solutions - hash time lock (HTLC), notary and side chain/relay.

Hash time lock uses cryptography to realize cross-chain transfers. The principle can be simply understood as Alipay, but the implementation method is decentralized.

The notary mechanism means that the notary establishes an intermediate account, and the user transfers assets to the intermediate account. The principle is almost the same as Alipay's inter-bank transfer, which requires the notary to issue a vToken across the chain.

Since the notary acts as a bridge between blockchain networks, the handling fee will be very low or even free. The only risk is whether the notary is trustworthy - not only whether there is a motive for evil, but also Also vulnerable to attack.

The third is the side chain/relay solution, which can also be called the bridge chain solution, because the relay chain is essentially a common side chain for multiple chains, and then the interaction between the side chains is realized. Operability.

This common side chain still acts as an intermediate account, but it is more secure than the notary mechanism just mentioned. Both Cosmos and Polkadot are more complete in terms of technology and mechanism.

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