A structural shift is underway in crypto infrastructure: the companies that once built *on* blockchains are now building their *own*. In the span of 14 months, Coinbase launched Base, Kraken shipped Ink, Sony deployed Soneium, Stripe announced Tempo, and Robinhood went live with its Arbitrum-base...
"Four million transactions in the first week of Robinhood Chain testnet. Developers are already building on our L2, designed for tokenized real world assets and onchain financial services. The next chapter of finance runs onchain." — Vlad Tenev, CEO, Robinhood
A structural shift is underway in crypto infrastructure: the companies that once built on blockchains are now building their own. In the span of 14 months, Coinbase launched Base, Kraken shipped Ink, Sony deployed Soneium, Stripe announced Tempo, and Robinhood went live with its Arbitrum-based L2 testnet — logging 4 million transactions and 600,000 smart contract deployments in its first week alone. These are not science experiments. They are strategic bets by companies with hundreds of millions of users that the future of financial infrastructure is proprietary chain ownership.
The implications are profound. When a brokerage with 24 million funded accounts builds its own settlement layer, it is not experimenting with crypto — it is re-architecting the pipes of modern finance. When a payments processor handling $1 trillion in annual volume builds a Layer 1 blockchain, it is signaling that existing rails are too slow, too expensive, or too constrained. The question is no longer whether fintechs will adopt blockchain. It is whether public, permissionless chains can survive the corporate invasion.
This report maps the emerging landscape of fintech-owned blockchains, analyzes their strategic motivations, and assesses what this consolidation means for the broader Web3 ecosystem.
The roster of corporations operating their own blockchain infrastructure in early 2026 reads like a fintech all-star team:
| Company | Chain | Type | Stack | Status | Focus | |---------|-------|------|-------|--------|-------| | Coinbase | Base | L2 | Forked OP Stack → Unified | Live (Jan 2024) | DeFi, consumer apps | | Kraken | Ink | L2 | OP Stack (Superchain) | Live (Dec 2024) | DeFi, perps | | Sony | Soneium | L2 | OP Stack (Superchain) | Live (Jan 2025) | Entertainment, creators | | Stripe | Tempo | L1 | Custom EVM | Testnet (Dec 2025) | Payments, stablecoins | | Robinhood | Robinhood Chain | L2 | Arbitrum Orbit/Nitro | Testnet (Feb 2026) | Tokenized equities, RWA |
This is not a coincidence. It is a pattern. Every major fintech platform processing significant transaction volume has concluded — independently — that owning the settlement layer is a competitive necessity.
The numbers tell the story of early traction. Base currently holds approximately $3.9 billion in TVL and captured 62% of all L2 revenue in 2025, generating $75.4 million. Kraken's Ink crossed $500 million in TVL by January 2026, with its flagship applications Nado and Tydro generating $5.77 million in monthly app revenue — up from $500,000 just three months prior. Sony's Soneium has processed over 500 million transactions and attracted 5.4 million active wallets since its mainnet launch.
The standard objection to corporate chains is simple: why build your own blockchain when you can deploy on Ethereum, Solana, or any existing L1? The answer comes down to three forces converging simultaneously.
Control over compliance infrastructure. Regulated fintechs cannot afford to have their settlement layer governed by anonymous token holders. Robinhood's chain, for instance, is specifically designed to embed compliance tooling — KYC gates, transaction monitoring, and regulatory reporting — directly into the protocol layer. This is not possible on a permissionless L1 without significant middleware, and middleware introduces latency, cost, and counterparty risk.
Economics of sequencer revenue. When you operate your own L2, you capture sequencer fees — the spread between what users pay for transactions and what the L2 pays to post data to Ethereum. Base demonstrated this model at scale: its sequencer revenue contributed meaningfully to Coinbase's bottom line, enough that the company concluded it needed to own the full stack rather than share economics with Optimism. This was a direct factor in Base's February 2026 decision to fork off the OP Stack entirely.
Distribution as moat. In a world with 100+ L2s competing for developers and liquidity, chains backed by companies with existing user bases have an asymmetric advantage. Robinhood brings 24 million funded accounts. Coinbase brings 110 million verified users. Stripe brings relationships with millions of internet businesses. These distribution advantages make corporate chains fundamentally different from protocol-native L2s that must bootstrap their user bases from zero.
Robinhood's entry is the most strategically significant of the cohort because it represents the first major U.S. brokerage building a blockchain for regulated securities settlement.
The chain launched its public testnet on February 10, 2026, at Consensus Hong Kong, built on Arbitrum Orbit and Nitro technology. The technical specifications are tailored for financial markets: 100-millisecond block times, Ethereum-inherited security guarantees, and purpose-built infrastructure for tokenized real-world assets.
The early metrics are striking. In its first week, the testnet processed 4 million transactions with over 600,000 smart contracts deployed. Users receive test ETH alongside simulated stock tokens representing real-world equities — Tesla, Amazon, and others — creating a sandbox for developers to build tokenized equity applications.
The ecosystem architecture reveals Robinhood's ambitions. Partnerships with Alchemy (infrastructure), Chainlink (oracles), LayerZero (cross-chain bridging), and TRM Labs (compliance) suggest a chain designed to meet institutional standards from day one. The company has committed $1 million to the 2026 Arbitrum Open House program, funding buildathons across New York, Dubai, London, and Singapore.
The strategic endgame is clear: Robinhood wants users to store, trade, and settle tokenized stocks, bonds, ETFs, and eventually private securities directly on-chain — outside the legacy DTCC settlement infrastructure. A mainnet launch is planned for later in 2026.
The most dramatic development in the corporate chain space came on February 18, 2026, when Coinbase's Base announced it would transition away from the Optimism OP Stack and migrate to a proprietary "unified stack" — a single codebase called base/base.
The market reaction was immediate. Optimism's OP token dropped nearly 20% as investors recalculated the value of a platform that just lost its most important customer. Base had contributed 41% of the Optimism Collective's lifetime revenue.
The technical rationale is straightforward: Base plans six major hard forks per year — double the previous pace — requiring development velocity that a shared codebase with external dependencies could not support. But the economic rationale is equally compelling. By controlling its own stack, Coinbase eliminates revenue-sharing obligations and gains full sovereignty over its infrastructure roadmap.
This move crystallizes a tension at the heart of the modular blockchain thesis. OP Stack and Arbitrum Orbit were designed as franchise models — standardized toolkits that let companies launch L2s quickly while contributing to a shared ecosystem. Base's departure suggests the franchise model may work for bootstrapping but becomes a constraint at scale. The question now is whether Kraken's Ink, which remains on the OP Stack, will follow suit.
The financial logic of corporate chain ownership becomes clearer when examined through the lens of value capture across the stack.
Sequencer revenue is the most direct benefit. L2 sequencers earn the spread between user-facing gas fees and L1 data availability costs. For Base, this represented tens of millions in annual revenue — revenue that would otherwise flow to third-party validators or protocol treasuries.
Data monetization is the second-order benefit. When you own the chain, you own the transaction graph. Every swap, mint, transfer, and settlement generates data about user behavior, market microstructure, and capital flows. For companies like Coinbase and Robinhood, this data has immense strategic value — informing product development, market-making, and institutional sales.
Vertical integration is the third benefit. Stripe's Tempo illustrates this most clearly. By building a Layer 1 with a built-in stablecoin AMM, 100,000+ TPS capability, and sub-second finality, Stripe can offer its merchants an end-to-end payment stack: stablecoin issuance, real-time settlement, cross-border transfers, and programmable payroll — all without touching a single legacy banking rail. The $500 million Series A at a $5 billion valuation reflects investor conviction that this vertical integration is worth a premium.
Ecosystem lock-in is the fourth benefit, though less discussed. Developers who build on Robinhood Chain or Base are building within proprietary ecosystems. Their smart contracts, integrations, and user bases become sticky — creating switching costs that benefit the chain operator.
The corporate chain thesis is not without significant risks.
Centralization concerns are real. Most corporate L2s operate with a single sequencer controlled by the parent company. Kraken explicitly acknowledged this with Ink, stating it will "decentralize over time." But "over time" in crypto often means "never," and a blockchain with a single sequencer is functionally a database with extra steps.
Regulatory fragmentation is accelerating. Each corporate chain introduces its own compliance framework, creating a balkanized landscape where tokenized assets on Robinhood Chain may not be interoperable with those on Base or Tempo. This could recreate the walled-garden problem that blockchain was supposed to solve.
The TVL exodus is already visible. Base's TVL dropped from $5.3 billion in January to $3.9 billion in mid-February 2026 — a $1.4 billion decline coinciding with internal strategic disagreements and the OP Stack departure. Corporate chains inherit the volatility of their parent companies' strategic decisions, which can spook capital allocators.
Liquidity fragmentation may be the most structural risk. Every new corporate chain splits DeFi liquidity across yet another settlement layer. With L2 TVL already distributed across dozens of chains, adding Robinhood Chain, Tempo, and others risks diluting the composability that makes DeFi valuable in the first place.
Five major fintechs — Coinbase, Kraken, Stripe, Sony, and Robinhood — now operate or are building proprietary blockchain infrastructure, collectively representing access to hundreds of millions of users.
Base's OP Stack departure on February 18 signals that corporate chains will prioritize sovereignty over ecosystem participation when they reach scale, undermining the "shared infrastructure" thesis.
Robinhood Chain's first-week metrics — 4 million transactions, 600,000+ smart contracts — demonstrate that TradFi user bases can generate meaningful blockchain activity when given the right on-ramp.
Stripe's Tempo represents the most ambitious play: a purpose-built L1 for payments with 100,000+ TPS, backed by $500 million in funding and partnerships with Visa, Standard Chartered, Nubank, and Revolut.
The economic model is proven. Base generated $75.4 million in sequencer revenue in 2025, capturing 62% of all L2 revenue — demonstrating that corporate chain ownership is not just strategic but highly profitable.
Centralization and fragmentation risks are mounting. Single-sequencer architectures, proprietary compliance frameworks, and liquidity balkanization threaten the permissionless, composable properties that define Web3's value proposition.
The fintech blockchain land grab of 2025-2026 marks an inflection point in crypto's institutional evolution. The question is no longer whether traditional finance will adopt blockchain technology — it already has. The question is whether the resulting infrastructure will resemble the open, composable, permissionless networks that Web3 builders envisioned, or whether it will converge toward a collection of corporate-controlled settlement layers that look remarkably like the legacy financial system they were meant to replace.
The data suggests a middle path is emerging. Corporate chains leverage public infrastructure (Ethereum for security, Arbitrum and OP Stack for tooling) while capturing economics and compliance at the application layer. This hybrid model offers genuine improvements — faster settlement, lower costs, 24/7 markets — but at the cost of the radical openness that gave blockchain its original edge.
For investors and builders, the strategic calculus is clear: in a world where every fintech owns its own chain, value accrues not to the infrastructure layer but to the applications and assets that sit on top. The winners will be the platforms that can attract the most economic activity to their chains — and in that race, distribution, not decentralization, is the deciding factor.