Expropriation and the scale
of electronic cash.

The claim that a government cannot take bitcoin is a poor substitute for an account of how property is controlled. The relevant questions are who can be compelled, what can be identified and what it costs to enforce a claim across a working monetary system.

My objection to much of the BTC discussion is that it treats a displayed address balance as though it were both a self-contained property object and a complete defence against state action. It is neither. Public records, concentrated service providers and identifiable industrial operations leave points at which legal and political power can act.

I expect mining to remain an industrial activity in which a relatively small number of substantial operators matter disproportionately. That is an economic expectation about capital, energy, operations and competition, not a theorem fixing the number of miners forever. It should be tested against evidence about actual control, not defended by counting labels on a block explorer.

The answer I favour is scale: a system used for ordinary commerce, capable of supporting millions of low-value coins and payments economically, rather than one organised principally around a small set of conspicuous stores of value. This is an argument about the structure and cost of intervention. It is not a promise that small outputs become anonymous, untouchable or exempt from lawful process.

Begin with coins, not the account display

The Bitcoin developer guide describes transactions in terms of unspent transaction outputs. An input refers to an earlier output by transaction identifier and output index; the output specifies an amount and spending conditions. A wallet balance aggregates relevant outputs. An address is a useful representation in common payment arrangements, not the complete accounting object.

That distinction changes the argument. Millions of addresses need not mean millions of owners, millions of independent signing arrangements or millions of independent businesses. One custodian can control many outputs. One key-management system can expose a large population of them. Conversely, a single person's commercial activity can involve many separate coins and counterparties.

When I criticise treating everything as an address, I mean collapsing those different relationships into one label. The engineering analysis should follow the spending conditions and control arrangements. The property analysis should follow the rights and evidence. The economic analysis should follow the activity and the cost of interfering with it.

State action already has practical mechanisms

In its 8 February 2022 Bitfinex announcement, the US Department of Justice reported recovering more than 94,000 bitcoin after court-authorised searches yielded files containing the relevant private keys. The mechanism matters: the reported recovery involved access to keys. It did not demonstrate that miners could spend arbitrary outputs without satisfying their spending conditions.

That case concerned stolen funds and criminal enforcement. It should not be casually relabelled as confiscation of an innocent person's property. Lawful recovery, forfeiture and political expropriation raise different legal and moral questions. The narrower technical point is that digital form did not make the assets beyond the reach of institutions acting through a concrete control mechanism.

Future intervention might likewise operate through a person controlling keys, a custodian, infrastructure within a jurisdiction or another legally reachable intermediary. The applicable authority and safeguards would depend on the jurisdiction and circumstances. Predicting a general power to take every holding from this example would exceed the evidence.

A serious account of resistance must therefore identify the proposed mechanism of taking. Obtaining control, preventing a payment, imposing a claim on an intermediary and changing the rules recognised by a market are different acts. They require different powers and have different limits.

A mining concentration argument needs the right boundary

The developer guide's account of pooled mining separates pool operators from the miners contributing work. A pool's share of observed blocks cannot, by itself, establish common ownership of all the machines behind it or the ease with which those machines could move elsewhere. Concentration should be examined at the level relevant to the proposed intervention: template selection, hash-power ownership, custody, energy supply or jurisdiction.

My concern is that industrial concentration makes some interventions more tractable than the rhetoric of a vast, ownerless network suggests. A state does not need to send an instruction to every wallet user to affect a service on which many users rely. The number of effective control points, their legal exposure and the cost of replacing them matter more than the number of addresses.

But mining power is not a general signing authority. The Bitcoin white paper's Section 11 explicitly limits the attacker considered there: controlling the competing chain does not simply permit arbitrary value creation or taking coins that never belonged to the attacker, because valid transactions remain subject to their rules. Censorship or reorganisation pressure must not be confused with the ability to forge a valid spend of somebody else's output.

A proposal to recognise a new category of spend would raise a separate rule-change and market-acceptance question. It cannot be smuggled into an argument by saying that a few miners exist. This is one reason I place such weight on stable foundational rules and distinguish them from a provider's commercial policy.

Visible amounts are evidence, not complete attribution

A public transaction record can expose amounts and relationships that remain available for later analysis. Identifying the human or legal person behind a particular output requires additional evidence, and linkage can be uncertain. “Public” does not mean that every owner is immediately known. Nor does an unfamiliar address establish that the activity cannot be traced.

The white paper's privacy discussion recognises this distinction. It describes separating public transaction information from identities, while acknowledging that combining inputs can reveal common ownership relationships. The useful lesson is to analyse the information actually exposed, rather than infer privacy from a wallet interface.

Moving the same economic value into many outputs does not, on its own, remove common control or erase the transaction history. Automated analysis may make the marginal cost of following additional outputs small. Where one key store or custodian controls them all, acquiring that control can affect the whole set. An argument for scale must confront those cases.

Scale changes the economic object of intervention

The model I favour is electronic cash used in a dense commercial economy: small-value coins, frequent payments and many independently operated services. Millions of addresses are useful only insofar as they serve that real activity. Multiplying labels around a single hoard does not create the same institutional structure.

Such an economy changes what intervention disrupts. It can involve merchants, workers, customers and ongoing contractual performance, rather than only the custody of a few highly visible balances. The costs of identifying affected rights, resolving competing claims and preserving legitimate commerce can then become central to the policy decision.

That is a conditional economic argument. A government may still be willing to bear substantial costs. Automation can reduce administrative costs. Shared custodians can recreate concentration inside a large transaction population. A larger network can also leave more public evidence. Scale does not settle the outcome in advance.

Low-value cash use also requires low enough transaction costs. If creating and spending small coins costs more than the commerce they support, the proposed structure will not be used. My case for BSV scaling is that the system should be engineered and commercially evaluated for that broad transaction economy, rather than assume high-value custody is the final purpose of digital money. Whether a particular deployment delivers that service remains an empirical question.

Make the expropriation claim testable

I would compare systems using the same total value and distinguish at least three arrangements: concentrated custody, dispersed outputs under common control, and genuine low-value commerce across independent participants. Count reachable control points, attribution requirements, administration costs and collateral disruption to lawful activity. Do not count a million addresses as a million independent barriers.

The analysis should also separate preventing future use from transferring title or obtaining spendable control. It should state the legal powers assumed, the time horizon and the role of private intermediaries. Those assumptions determine what the proposed comparison can establish.

My conclusion is that scale and widespread cash use belong at the centre of the economic argument. The strongest answer to fears of expropriation is not an unsupported declaration that governments are powerless. It is a clear account of the property, the control structure, the commerce that depends on it and the cost of intervention, alongside enforceable rights and due process.