HB 639 gives residents a self-custody right, exempts miners and validators from money-transmitter licensing, and creates a dedicated superior-court docket for blockchain disputes.
New Hampshire Governor Kelly Ayotte signed HB 639, the Blockchain Basics Act, into law last week, giving the state the widest set of statutory protections for cryptocurrency users, miners and node operators enacted anywhere in the United States. The bill establishes a right of self-custody, blocks state and municipal taxes on payments made in digital assets, exempts blockchain infrastructure activity from money-transmitter licensing, and creates a dedicated blockchain dispute docket inside the state superior court.
The bill's prime sponsor, Representative Keith Ammon, is also president of the New Hampshire Blockchain Council, the trade group that pushed the legislation. "With Governor Ayotte's signature on HB 639, New Hampshire has once again demonstrated that it intends to lead the nation in blockchain innovation," Ammon said in a statement released after the signing. He described the law as protecting "one of the most fundamental rights in the digital economy, the right of individuals to control their own digital assets through self-custody."
The self-custody provision is the load-bearing part of the statute. It prevents state agencies and local governments from restricting residents' ability to hold cryptocurrency in personal wallets, and it stops them from taxing, fining or penalising a transaction solely because it settles in digital assets. That is a defensive posture rather than an expansive one; New Hampshire has not built anything new, it has ring-fenced what already existed from future state and municipal encroachment.
The infrastructure carve-out matters more in operational terms. Under HB 639, running a node, mining bitcoin, staking, or acting as a validator no longer triggers money-transmitter classification at the state level. That is the same threshold that has caused years of licensing headaches for smaller operators elsewhere in the country, where states like New York and Louisiana have treated crypto infrastructure work as a regulated financial activity. Ammon's statement framed the exemption as clearing a path for "blockchain developers, miners, validators, entrepreneurs, and businesses building the next generation of financial technology." The legislative language is narrower than the rhetoric, but it does what it needs to.
The blockchain dispute docket is the more experimental provision. Modelled loosely on Delaware's Court of Chancery, it routes blockchain-related civil actions to judges who develop expertise in the area, on the theory that specialist benches produce faster and more predictable rulings than general courts. Whether that actually pans out depends on caseload; a specialised docket that hears three disputes a year is administrative theatre. New Hampshire is small enough that its case volume will take time to build, but the docket's real value may be reputational rather than jurisprudential, signalling that the state treats blockchain litigation as a category worth institutionalising.
HB 639 is a companion piece to HB 302, the strategic Bitcoin reserve law Ayotte signed in May 2025. That statute made New Hampshire the first US state to permit its treasurer to invest up to five per cent of specific public funds in bitcoin and precious metals, and it turned the state into a reference case for other jurisdictions weighing similar moves. Texas funded its own state reserve with a $5 million bitcoin purchase later in 2025. The federal government's own Strategic Bitcoin Reserve, created by President Donald Trump in March 2025, uses similar language but has been running into jurisdictional problems that state-level reserves have so far avoided.
New Hampshire's crypto ambitions have not been uniformly successful. The state's executive council rejected a proposal from the New Hampshire Business Finance Authority last week that would have allowed the state to issue the world's first Bitcoin-backed municipal bond. The bond would have been paired with a taxable revenue instrument of up to $100 million, tied to a borrower connected to the mining firm CleanSpark. The council's block was procedural rather than ideological, but it suggests the state's political consensus around crypto stops short of putting public credit behind the asset directly.
The Blockchain Basics Act does not touch corporate governance, taxation of gains, or securities treatment. Its ambition is bounded: prevent state overreach, protect infrastructure operators, and create an institutional home for disputes. That combination is enough to shift the marginal decision about where to open a crypto business toward New Hampshire, particularly for smaller operators for whom money-transmitter licensing has been a fixed cost they cannot easily absorb. It will not, on its own, produce a Miami or Austin-style migration.
The broader question is whether other states copy the template. Wyoming built the first American crypto legal architecture in 2019 and 2020 but has spent the intervening years watching its lead erode; Texas has taken the treasury angle; Florida has tried on-and-off to build a payments framework. New Hampshire is the first to package self-custody protection, infrastructure exemptions and a specialised court docket in a single statute. If two or three more states adopt substantially similar language in the next legislative session, HB 639 will function as a model bill in fact rather than in name. If none do, it will remain a jurisdictional oddity that does not scale beyond the state line.
