Bitcoin SV (BSV, where “SV” stands for “Satoshi Vision”) is a cryptocurrency that forked from Bitcoin Cash in November 2018, built on the premise that Satoshi Nakamoto’s original Bitcoin protocol should be restored and kept stable rather than continuously modified. It sits in a lineage of splits that traces back to Bitcoin itself, making it one of the most contentious third-generation forks in crypto history.
Background
To understand Bitcoin SV, you need to understand what its proponents were reacting to. The Bitcoin community spent years debating how best to scale the network — the disagreement eventually spawned Bitcoin Cash in 2017. Bitcoin Cash raised the block size limit from 1 MB to 8 MB and later to 32 MB. A faction within that community, led by the developer group nChain and advocate Craig Wright, argued that even these changes did not go far enough — and that Bitcoin Cash was drifting from what they believed to be the original design Satoshi intended.
Their proposed solution was dramatically larger blocks (starting at 128 MB and with ambitions into the gigabyte range) and a philosophy of locking the protocol at what they characterized as its foundational state. The argument was that unpredictable protocol changes deter enterprise developers from building on the chain, and that massive on-chain throughput — rather than second-layer solutions — is the correct path to global-scale payments.
Whether this thesis is technically sound or economically justified is debated vigorously in the broader crypto community. Critics argue that very large blocks centralize mining and node operation, since only well-resourced operators can store and process the chain. Supporters counter that economies of scale will keep costs manageable and that on-chain data capacity enables use cases no other chain can handle.
History
The split from Bitcoin Cash was triggered by competing upgrade proposals in mid-2018. One camp, led by Bitcoin ABC (which later became eCash), wanted to introduce new scripting features and change some data structures. The nChain camp opposed these changes and proposed its own roadmap centered on large blocks and what it called “restoring” original opcodes — bits of scripting functionality that had been disabled in early Bitcoin.
When both sides refused to compromise, the Bitcoin Cash network forked on November 15, 2018. The resulting hash war, in which both chains competed for mining power to establish legitimacy, was one of the most publicly dramatic events in crypto’s history. Both chains survived, though neither side “won” in any decisive sense: Bitcoin Cash retained its ticker on most major exchanges, and the new chain was listed as Bitcoin SV.
In the years following the fork, BSV pursued a series of increasingly large block upgrades. The network set records for block sizes that far exceeded any other public blockchain. At the same time, several major exchanges delisted BSV, citing concerns about community conduct and controversies surrounding Craig Wright, who publicly claimed to be Satoshi Nakamoto — a claim that has been disputed by large portions of the crypto community and that has resulted in significant legal proceedings in multiple jurisdictions.
The project also suffered a number of reorganization attacks (51% attacks) on its network, where miners temporarily rewrote transaction history. These events highlighted one of the risks facing any proof-of-work chain that does not command the majority of its shared hashing algorithm’s total power.
Technology
Bitcoin SV uses the same proof-of-work mining algorithm as Bitcoin — SHA-256 — meaning BSV miners compete using the same class of hardware (ASICs) as Bitcoin miners. A new block is added roughly every ten minutes, and the difficulty of the cryptographic puzzle adjusts to maintain that pace as total network hash rate rises or falls. You can read more about how this process works on the mining explained page.
The defining technical feature of BSV is its block size. While Bitcoin’s effective throughput is constrained to a few transactions per second and Bitcoin Cash targets a modest multiple of that, BSV has pursued blocks that can contain gigabytes of data. The theoretical throughput is enormous by blockchain standards. In practice, average utilization of that capacity has varied, with periods of artificially inflated data volumes from specific applications or test projects.
BSV also reintroduced a set of scripting opcodes that were present in early Bitcoin but later disabled. The intent is to make BSV’s scripting layer Turing-complete enough to support complex applications and data storage directly on-chain — a different design philosophy from Ethereum, which pursues programmability through a dedicated virtual machine, and from Bitcoin, which deliberately keeps on-chain scripting minimal.
BSV’s core thesis is that a blockchain should be like an internet protocol: stable, predictable, and never changed after a certain maturity point, so that businesses can build on it without fearing protocol-level surprises.
Running a full node on BSV is substantially more resource-intensive than on chains with smaller blocks. The chain accumulates data rapidly, which means participating fully in the network requires significant storage and bandwidth — a trade-off that matters when thinking about nodes and validators and what decentralization really means in practice.
Tokenomics
BSV’s supply model is inherited directly from Bitcoin’s original design. The maximum supply is capped at 21,000,000 coins, mirroring Bitcoin’s supply schedule. New coins are issued as block rewards to miners who successfully add blocks to the chain.
Like Bitcoin, BSV undergoes periodic halving events — approximately every 210,000 blocks, the block reward is cut in half. This controlled inflation and emissions schedule is intended to make the coin disinflationary over time, with supply growth slowing until the last BSV is mined sometime around the year 2140.
There is no staking mechanism, no token burn program, and no governance token. Miners are the primary economic actors securing the chain, and their revenue comes from a combination of block rewards and transaction fees. The theory is that as the block reward diminishes, a high volume of small-fee transactions across very large blocks will sustain miner revenue — a bet on throughput rather than per-transaction fee value.
BSV does not have a formal foundation treasury or developer fund built into the protocol. Development has been primarily driven by nChain and affiliated organizations rather than a decentralized community of contributors.
In summary
Bitcoin SV occupies a genuinely unusual position in the cryptocurrency landscape: it is simultaneously a throwback project (arguing for a return to a specific early design) and an experiment in extreme on-chain scaling that no other major chain has attempted at the same scale. Its controversies — around its founders, its exchange delistings, and its security incidents — are real and worth understanding before engaging with it.
For anyone learning about consensus mechanisms, the history of forks, or the ongoing debate about how blockchains should scale, BSV is an instructive case study in how sharply a community can fracture over protocol design philosophy. Understanding why it split from Bitcoin Cash, and what both sides were arguing about, illuminates questions that remain relevant across the broader crypto ecosystem.
This page is educational only and does not constitute financial advice.
Last reviewed January 1, 2026.