Bitcoin’s BLAKE2b Fork Goes Live, Then Quickly Runs Into Miners, Markets and Exchange Support Problems

Bitcoin’s latest ideological battle has produced a new blockchain, but so far it has failed to produce the one thing every successful cryptocurrency ultimately needs: meaningful adoption. On September 1, a Bitcoin hard fork backed by Luke Dashjr went live after supporters launched a new chain built around BLAKE2b proof of work. The project was designed as an alternative to Bitcoin’s established SHA-256 network, with the goal of restoring what supporters believe is a more decentralized and “money only” version of Bitcoin. The launch, however, was quickly met with a reality check. The new chain attracted almost no meaningful mining support, major exchanges largely ignored it, trading activity remained extremely limited and the small exchange that did provide a market for the new coin soon indicated that it would delist the asset. What was intended to be a major challenge to the direction of Bitcoin instead quickly became a demonstration of just how difficult it is to build a competing cryptocurrency network from scratch.

The origins of the dispute go back to BIP-110, a proposal associated with Dashjr that sought to restrict the use of Bitcoin block space for arbitrary data. Supporters argue that inscriptions and other data-heavy applications consume valuable block space and increase the long-term resource requirements of operating a full Bitcoin node. Their argument is that Bitcoin was created primarily as a peer-to-peer electronic cash system and that its limited block space should be prioritized for financial transactions. Critics take the opposite position, arguing that Bitcoin’s fee market should determine which transactions receive block space. If someone is willing to pay the required fee, they believe the network should process the transaction regardless of whether another participant considers that transaction undesirable. What started as a technical disagreement over block space eventually became a much broader debate about Bitcoin’s identity, governance and who ultimately has the authority to determine which rules the network should follow.

The first attempt to enforce BIP-110 in August already demonstrated how difficult it would be to challenge Bitcoin’s established network. The minority chain received only a small fraction of Bitcoin’s mining support and stalled after producing just two blocks. Miner signaling for BIP-110 reportedly peaked at only 2.53%, far below the 55% support threshold its proponents had sought. Rather than abandon the effort, Dashjr’s supporters changed their strategy for the September launch. Instead of attempting to compete directly for Bitcoin’s existing SHA-256 mining hardware, the new chain would switch its proof of work algorithm to BLAKE2b. That decision separated the new network from Bitcoin’s enormous fleet of specialized SHA-256 ASIC miners and meant that the new chain would effectively have to establish its own mining ecosystem. In theory, this could have created an opportunity for a more accessible mining network. In practice, it immediately exposed one of the biggest advantages Bitcoin has accumulated over more than a decade.

Bitcoin’s mining industry is built around highly specialized SHA-256 ASIC hardware. Modern Bitcoin miners are designed specifically to perform SHA-256 calculations at enormous speeds while consuming as little electricity as possible. Those machines cannot simply be pointed toward the BLAKE2b chain and continue mining it. The fork therefore had to attract a completely different group of miners and convince them that securing the new network could be economically worthwhile. BLAKE2b itself is a modern cryptographic hashing algorithm, and supporters of the fork have argued that using it could reduce the dominance of Bitcoin’s existing specialized mining industry and allow a broader range of hardware to participate. That idea may be appealing from a decentralization perspective, but mining ultimately comes down to economics. Miners need a valuable asset to earn, sufficient liquidity to sell their rewards and enough demand to justify the cost of electricity and hardware. A new algorithm can change the technical requirements for mining, but it cannot create demand for the underlying cryptocurrency.

That became apparent almost immediately after the BLAKE2b chain went live. While the new network began producing blocks, there was little evidence of miners meaningfully migrating toward it. Bitcoin’s existing SHA-256 network continued operating normally, securing the overwhelming majority of economic activity while the new chain struggled to attract comparable hash power. Reporting following the launch described the fork as arriving with almost no meaningful mining support, while the broader mining industry, exchanges and traders largely continued to ignore it. For miners, this is arguably the most important part of the story because network launches often generate excitement around potential mining opportunities without considering the economics that determine whether those opportunities can actually survive. A network can technically function with a small amount of hash power, but that does not mean it has created a sustainable mining market. Without enough miners, network security can become a concern. Without enough users and transactions, there may be little demand for block space. Without enough buyers, miners can have difficulty turning their rewards into usable capital.

The exchange situation made those problems even more obvious. Although major cryptocurrency exchanges did not embrace the new asset, one smaller exchange did open a market for the forked coin under the ticker BTCB2. For a short period, this gave traders at least one place to buy and sell the new asset. The market, however, was extremely thin, and the available order book showed just how little liquidity existed. At one point, BTCB2 bids were reported around $82 while the lowest ask was approximately $190, representing a spread of more than 130%. That is an enormous gap for an asset that is supposedly trading in an established market. A displayed asking price in a thin order book should not be confused with a genuine market valuation. If there are very few buyers and sellers, a small number of orders can create an impressive looking price that bears little resemblance to what a large holder could actually sell the asset for. The situation highlighted one of the biggest challenges facing the new chain: creating a blockchain is relatively straightforward compared with creating a liquid and trusted market around it.

The bigger problem for BTCB2 came almost immediately after the listing. The exchange that had provided the market reportedly announced that it intended to delist the BLAKE2b coin. That development is particularly significant because the new asset already had extremely limited exchange support. Instead of gradually expanding from one exchange to several, the project was potentially losing the one platform that had actually created a market for the coin. For a new cryptocurrency, losing exchange access can have an enormous impact because exchanges provide the connection between the blockchain and the broader financial market. Without them, miners have fewer options for selling their rewards, investors have fewer ways to acquire the asset and liquidity becomes even more limited. In this case, the fact that the coin faced delisting almost immediately after launch illustrates just how difficult the road ahead could be for the BLAKE2b project.

The situation also demonstrates the difference between launching a blockchain and launching a viable cryptocurrency. Anyone can publish software, operate nodes and create blocks, but building an economic network around those blocks is considerably harder. Bitcoin has spent more than 15 years building its network. It has an enormous mining industry, specialized ASIC manufacturers, major exchanges, custodians, wallets, payment infrastructure, institutional investors and a global market built around its established chain. The BLAKE2b fork has none of that infrastructure at a comparable scale. Its supporters may argue that starting from scratch is precisely what makes the project valuable. If Bitcoin’s existing mining ecosystem has become too centralized or too dependent on specialized hardware, then creating a new chain with a different algorithm could theoretically provide an opportunity to build something more decentralized. The problem is that starting over also means starting without Bitcoin’s network effects, and those network effects may ultimately be much more difficult to replicate than the underlying technology.

This is where the fork’s ideological argument collides with the realities of cryptocurrency markets. Dashjr has argued that the established Bitcoin chain is no longer following the principles of the original Bitcoin design. He has referred to the main chain as “Spamcoin” and argued that the BLAKE2b network represents the continuation of Bitcoin under what he considers the correct rules. The broader market has not accepted that interpretation. Bitcoin’s established SHA-256 chain continued operating throughout the fork, its BTC ticker remained recognized across the global cryptocurrency market and exchanges, miners and users continued treating that network as Bitcoin. The BLAKE2b project therefore faces a challenge that goes far beyond technical development. It has to convince miners to secure it, exchanges to support it, users to transact on it and the broader market to recognize it as something more than another Bitcoin fork.

Ripple CTO emeritus David Schwartz has also criticized the broader BIP-110 argument, questioning the premise that the existing Bitcoin network is fundamentally broken and needs to be “fixed.” His comments highlight the deeper issue behind the fork. The disagreement is not simply about block size, inscriptions or mining algorithms. It is about who gets to decide what Bitcoin is and whether a group of participants can create a competing network and successfully convince the market that it represents the continuation of the original project. The open nature of cryptocurrency makes that possible from a technical standpoint, but the market is under no obligation to recognize the new chain as the dominant version. Ultimately, users and businesses decide which network they are willing to support through their economic activity.

Blockstream CEO Adam Back captured the irony of the situation with a short statement after the fork went live: “Live by the fork, die by the fork.” The comment reflects the central challenge facing the project. The BLAKE2b chain was created because its supporters believed the existing Bitcoin network had moved away from their preferred rules. Once they created a competing chain, however, they faced the same market forces that every other Bitcoin fork has encountered. Miners have to decide where to point their hardware, exchanges have to decide what they will list and users have to decide which chain they actually value. The code can establish a set of rules, but it cannot force the market to accept those rules.

So far, the market has made its choice clear. Bitcoin’s original SHA-256 chain has continued operating normally, while the BLAKE2b chain has struggled to attract meaningful mining power. Major exchanges have not embraced the new asset, the available trading market has been extremely illiquid and the exchange that did provide a market has already indicated that it intends to remove the coin. For a project that was supposed to demonstrate an alternative future for Bitcoin, those developments represent a difficult start. The chain may continue operating and its supporters may remain committed to the project, but the early market response suggests that technical independence does not automatically translate into economic relevance.

For miners watching the situation, the lesson may be more important than the politics surrounding BIP-110. A new mining algorithm can sound attractive on paper, especially when it promises to create opportunities outside of Bitcoin’s established ASIC ecosystem. However, mining profitability ultimately follows economics rather than ideology. Miners need a combination of reasonable network difficulty, valuable block rewards, efficient hardware, reliable infrastructure and a liquid market where mined coins can actually be sold. If a new network has very little demand, even highly efficient mining equipment may not produce a meaningful return. If exchange support disappears, the situation becomes even more difficult because miners may have no practical way to convert their rewards into Bitcoin, dollars or other assets.

That is the challenge the BLAKE2b fork now faces. The project can continue producing blocks, developers can continue maintaining the software and supporters can continue arguing that the new chain represents the “real” Bitcoin. None of those things automatically create a market. The next several weeks will therefore be much more important than the September 1 launch itself. The question is no longer whether the chain can technically fork from Bitcoin because it already has. The real question is whether anyone outside the project’s existing community will decide that the new chain is worth securing, trading and using.

At the moment, the evidence points in the opposite direction. The BLAKE2b fork was supposed to demonstrate that Bitcoin could return to a more decentralized mining model and a narrower focus on monetary transactions. Instead, its first days have demonstrated just how difficult it is to recreate Bitcoin’s network effects from scratch. Bitcoin’s greatest advantage may not simply be SHA-256, its block reward or even its 21 million coin supply. It may be the enormous economic network that has formed around those rules. That network includes miners, exchanges, developers, businesses, investors and millions of users who have collectively spent more than a decade establishing Bitcoin as the dominant proof of work cryptocurrency.

For Bitcoin miners, investors and the broader crypto market, that may ultimately be the most interesting takeaway from the BLAKE2b experiment. The fork proves that creating an alternative set of Bitcoin rules is possible, but it also shows that convincing the market to follow those rules is an entirely different challenge. The BLAKE2b chain now has the opportunity to prove its supporters right, but its early difficulties with mining participation, liquidity and exchange support suggest that the hardest part of the experiment is only beginning.