Drivechain: will this Bitcoin upgrade put an end to altcoins?

Bitcoin, the world’s first cryptocurrency, often faces criticism for its supposedly outdated technology and its slow evolution compared with other cryptocurrencies. This has led rival altcoins to try to compete with it by offering extra features such as faster transactions, smart contracts and tokenization.

However, a proposed Bitcoin upgrade known as Drivechain aims to bring these features to Bitcoin without making major changes. Drivechain, proposed in BIP 300 and BIP 301, is a type of proposed soft fork for Bitcoin. It lets users create sidechains freely.

These sidechains are independent blockchains pegged 1:1 to the Bitcoin network. This lets users move their bitcoin from the main chain to these sidechains and get it back at any time. The model uses a conjecture-and-refutation mechanism to maintain its link with Bitcoin.

Drivechain is defined in BIP 300 and BIP 301. The sidechains are run by separate software and apply different rules from the main Bitcoin network.

This allows countless sidechains to be created, letting Bitcoin users transact in many new ways using their bitcoin. The upgrade lets Bitcoin users benefit from extra features without changing the network’s core rules.

Advantages of Drivechain

Bitcoin scalability

Bitcoin’s base layer processes transactions relatively slowly because of its 1-megabyte block size limit and 10-minute block times. This leads to slow confirmation times and expensive fees when the network is congested, holding back Bitcoin’s everyday usefulness for payments.

Moving transaction capacity off the base chain to a sidechain can help transactions be processed faster and more cheaply. This is especially true if a given sidechain uses bigger blocks or faster block times. Combined with other layer 2 solutions such as Bitcoin’s Lightning Network, Bitcoin’s potential as a medium of exchange is strengthened even further.

Bitcoin privacy

Drivechain allows more flexible blockchains with stronger privacy guarantees or permissioned access. In some contexts, this is an advantage over the mainnet, which publicly tracks the movement of every BTC transaction.

Such sidechains can be used for institutional or business applications that require different kinds of transactions. One example of an existing sidechain offering similar benefits is Liquid.

Bitcoin functionality

Drivechain could bring features and functionality to the Bitcoin network that have historically become popular on its biggest rival, Ethereum. This means a sidechain could support more complex types of transactions, like those found in Ethereum’s DeFi, expanding Bitcoin’s use as decentralized money. One existing sidechain that offers this kind of use is Stacks.

Alternatively, a sidechain similar to Rootstock could be recreated, enabling tokenization and NFTs on Bitcoin and creating a much broader blockchain economy.

Bitcoin security

Sidechains can strengthen Bitcoin’s security by giving Bitcoin miners bigger incentives through transaction fees. The effect of a more flexible, feature-rich network on a blockchain’s security budget is clear when you compare Ethereum’s fee revenue with Bitcoin’s in its current form.

A thriving fee market will ensure that the security of Bitcoin’s hash rate stays high even as the block subsidy shrinks over time.

Some of the risks of Drivechain

Bitcoin privacy

Privacy is a double-edged sword. It strengthens users’ freedom. However, creating private, permissioned blockchains could also make illegal transactions easier. That would make it harder for regulators and law enforcement to track down criminals.

Bitcoin complexity

Part of Bitcoin’s appeal is its simplicity and its focus on being money. Adding more complexity to the protocol, however, could make it harder for new users to understand and navigate. It could also become a source of disagreement over what Bitcoin should be. That would hurt Bitcoin’s stability and network, possibly leading to a network split.

Bitcoin security risks

The added complexity of sidechains could also leave them vulnerable to the many DeFi-related attacks and thefts seen on other blockchains today. Last year, hackers stole more than $3 billion through numerous DeFi exploits.

Bitcoin centralization

Sidechains are likely to be far more centralized than Bitcoin’s main chain in terms of security, number of nodes and developer ecosystem. If a sidechain becomes popular, the risk to its users grows if the central authority starts acting against their interests.

Conclusion

Drivechain isn’t an attack on other cryptocurrencies but an attempt to contribute to a better crypto space, and it could serve as a guide for all quality networks to create better value.