When a SoFi customer in the US sends money to family in Mexico, dollars leave their account and pesos arrive in a Mexican bank account. In between — invisibly — those dollars became Bitcoin, crossed the Lightning Network, and were converted back to local currency. The user never holds crypto, never sees a wallet, never learns a seed phrase.

That's the model Jack Mallers built with Strike's Send Globally, now live across corridors like Mexico, the Philippines, Vietnam, Nigeria, Kenya and Ghana. It's also what David Marcus's Lightspark is wiring directly into regulated banks: SoFi announced the integration in August 2025 as one of the first US banks to settle cross-border transfers over Bitcoin's Lightning rail, starting with the US–Mexico corridor for its 11.7 million members. Fiat in, Bitcoin hidden in transit, fiat out.

The numbers, honestly

Lightning's volume is real and growing — but smaller than the headlines suggest. In November 2025 the network processed an estimated $1.17 billion across 5.22 million transactions, its first month above $1 billion. Tellingly, the average transaction was $223, up from $118 a year earlier. Lightning today moves larger sums between exchanges more than it powers everyday micro-purchases. Public capacity hit an all-time high of 5,637 BTC in December 2025 — but that growth came from institutions adding Bitcoin to existing channels, not from more users or nodes (node count actually sits near 14,900, down from a 2022 peak above 20,000).

A data note: these are estimates. River extrapolates from operators covering roughly half of network capacity, and private channels are invisible by design. Treat them as the best available picture, not ground truth.

But Bitcoin isn't the dominant rail

Here's the part most "Bitcoin is eating payments" takes skip: it isn't. Stablecoins are. Crypto-powered remittances are projected to reach roughly $34.96 billion in 2026, up from $27.87 billion in 2025 — and the large majority runs on dollar-pegged stablecoins like USDC and USDT, not BTC. The total stablecoin market hit $320 billion in February 2026; USDC's circulating supply alone sits between $75 and $78 billion. For a recipient who wants dollars, a dollar token is the obvious choice.

So the honest framing isn't Bitcoin versus stablecoins. It's two different settlement architectures with different trust assumptions.

The difference that matters: the kill switch

A regulated stablecoin is efficient and dollar-stable. It is also freezable by a single issuer. Both USDC and USDT embed a blacklist directly in their smart contracts: a blacklisted address can no longer send or receive the token.

The scale, per recent on-chain analysis covering 2023–2025: Circle has blacklisted roughly 372 USDC addresses holding about $109 million; Tether has blacklisted around 7,268 addresses holding roughly $3.29 billion (Tether's own figure is higher, above $4.2 billion). These are cumulative totals to date and will keep moving.

This isn't theoretical. In March 2026, Circle froze 16 active business wallets tied to a sealed US civil case, disrupting exchanges and payment platforms — then began reversing some freezes within days after public backlash, when the evidence behind several addresses looked thin. Back in 2022, Circle blocked addresses and froze over 75,000 USDC after the US Treasury sanctioned the Tornado Cash mixer.

There is a genuine other side to this. Those same freeze powers have returned funds to hack victims and helped authorities seize money tied to fraud, trafficking and terrorism. Centralized control is a feature for law enforcement and a liability for the censored. Both are true at once.

"A CBDC by the back door"?

A critique has emerged — voiced across the political spectrum — that regulated stablecoins are becoming a central bank digital currency by the back door. Strip away the rhetoric and look at the structure. The US GENIUS Act, signed in July 2025, placed stablecoin issuance, custody and auditing under a federal framework. It was paired with an Anti-CBDC Surveillance State Act barring the Federal Reserve from issuing a retail digital dollar directly. The result is a system of private tokens running on government-defined rails, with KYC at every on- and off-ramp.

Whether that's prudent regulation or control-by-proxy is a values question, not a factual one. But the mechanics aren't in dispute: a programmable, blacklist-capable token, issued under federal supervision, is structurally close to what a CBDC would do — minus the central bank as direct issuer.

Where Bitcoin actually sits

Bitcoin's distinct property here isn't speed or cost. Lightning is fast and cheap, but so are stablecoin rails. It's that self-custodied Bitcoin has no issuer and no blacklist. No company can freeze a key it doesn't hold.

And here's the catch the hype skips: in the invisible-rail model, users usually don't self-custody. Strike and SoFi are custodial, fiat-to-fiat — Bitcoin only transits. The censorship-resistance lives in the protocol, not automatically in the product. You get Bitcoin's neutrality as plumbing, but the "not your keys" tradeoff returns the moment a custodian holds the balance. Self-custody is a choice the user still has to make — the rail doesn't make it for them.

The takeaway

This isn't good rail versus evil rail. It's a structural tradeoff. Stablecoins give you dollar-stability, smooth UX, and a single issuer who can freeze and is federally supervised. Bitcoin gives you volatility and neutrality — censorship-resistant, but only when you actually self-custody.

The interesting question for the next decade isn't which rail "wins." It's which property people value when it costs them something: dollar-stability and convenience, or self-custody and the absence of a kill switch.

Before you trust a rail, study how it's built — and who can stop it. That's not a Bitcoin slogan. It's just methodical honesty.

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Sources: River, AMBOSS, Bitcoin Visuals (Lightning metrics, Nov–Dec 2025); Strike & Lightspark/SoFi announcements (2022–2025); CoinLaw (crypto-remittance projections, 2026); AMLBot/Dune Analytics (stablecoin freeze data, 2023–2025); Circle, Yahoo Finance, CoinDesk (USDC freeze events, 2022–2026); GENIUS Act & Anti-CBDC Surveillance State Act (July 2025). Figures are time-stamped; network-volume and freeze totals are best-available estimates and move over time.