What Is Onchain Finance?

Onchain finance is financial activity that runs on public blockchains. Payments, foreign exchange, lending, trading, and the issuance of assets such as bonds and funds happen as transactions on a shared ledger, settled by code rather than by a chain of intermediaries. The result is finance that can operate 24 hours a day, settle in minutes, and be programmed.

The term has moved from crypto circles into mainstream finance and policy. In Japan, "onchain finance" (オンチェーン金融) is now used by banks and companies to describe the next stage of the financial system, and JPYSC, Japan's first trust-type yen stablecoin*, is one of its first building blocks. This article explains what onchain finance is, how it differs from the system we use today, and what it is made of.

How onchain finance differs from traditional finance

Traditional finance records value in separate databases held by banks, brokers, clearing houses, and payment networks, and reconciles them with each other in batches. Onchain finance records value on one shared ledger that every participant can read and that updates as transactions happen.

That single change produces the differences people notice:

• Settlement time. A bank transfer settles in hours or days; an onchain transfer can settle in minutes.
• Operating hours. Markets and payment rails close at night and on weekends. Blockchains do not.
• Intermediaries. Cross-border payments pass through correspondent banks, each adding time and fees. Onchain, value moves directly between two wallets.
• Programmability. Onchain money can carry conditions: pay when goods arrive, split revenue automatically, settle a trade only when both sides deliver.
• Transparency. Transactions are visible on a public record, which makes audit and reconciliation simpler.

Onchain finance does not remove regulation or institutions. Regulated banks, trust companies, and exchanges are building on blockchains under existing law, which is exactly what Japan's stablecoin framework was designed to allow.

The building blocks

Onchain finance is made of four layers that fit together.

Stablecoins are the cash layer. A stablecoin is a blockchain token designed to be worth exactly one unit of a national currency, backed by reserves and redeemable at par. Without stablecoins, onchain markets would have no stable unit to price and settle in. JPYSC aims to bring the Japanese yen into this layer (see What is a yen stablecoin?).

Tokenized assets are the securities layer. Tokenization is the process of issuing a real-world asset, such as a bond, a fund share, real estate, or a stock, as a blockchain token. Tokenized assets can be traded and settled against stablecoins in the same transaction, which has the potential to remove the delay between trade and settlement.

Smart contracts are the rules layer. A smart contract is a program on the blockchain that executes automatically when its conditions are met. Lending markets, exchanges, payment schedules, and escrow all run as smart contracts.

Wallets and accounts are the access layer. Users hold and move onchain assets through wallets. Modern smart accounts remove the need to manage private keys or hold a separate token for fees, so onchain finance can feel like a normal financial app. Startale App is built on this model.

Onchain finance, DeFi, and crypto: what is the difference?

Onchain finance is the broad category: any financial activity settled on a blockchain, whether run by a regulated institution or an open protocol.

Decentralized finance (DeFi) is the subset that runs as open protocols without an operating company in the middle, such as automated exchanges and lending pools. DeFi is part of onchain finance, but onchain finance also includes regulated stablecoins, tokenized bonds issued by banks, and payment rails run by licensed companies.

Crypto assets such as Bitcoin and Ether are the native assets of blockchains. They are one asset class within onchain finance, not the whole of it. Most of the value moving onchain today is stablecoins and tokenized real-world assets.

Why Japan is leading

Japan was one of the first major economies to write stablecoins into law. Since June 2023, fiat-pegged stablecoins have been regulated as Electronic Payment Instruments under the Payment Services Act, with clear rules on who may issue them, how reserves must be held, and who may distribute them.

That clarity is why onchain finance in Japan is being built by regulated institutions. JPYSC, launched on June 24, 2026, is issued by SBI Shinsei Trust & Banking, distributed by SBI VC Trade, and developed with Startale Group. In the launch announcement, SBI Holdings Chairman Yoshitaka Kitao described the shift to onchain finance as irreversible, and Startale Group CEO Sota Watanabe called onchain finance an extremely important strategic field for Japan.

The pieces are arriving in order: a regulated yen stablecoin, tokenized assets settled in yen, and consumer applications that make holding and using them simple.

What onchain finance makes possible

Once a regulated currency exists onchain, the use cases follow:

• Onchain foreign exchange. Yen and dollar stablecoins trading in pools that never close.
• Institutional lending. Yen borrowing and lending markets that can settle quickly and transparently.
• Tokenized-asset settlement. Buying a tokenized bond and paying for it in the same transaction.
• Cross-border payments. The potential to send yen abroad in minutes without correspondent banks.
• Programmable payments. Payroll, subscriptions, royalties, and escrow that execute automatically.
• Agent payments. Software agents that pay each other in stablecoins for services, with no human in the loop.

What to watch

Onchain finance is early. Three things decide whether it earns trust at scale. First, the quality of the stablecoin: who issues it, what backs it, and whether it can always be redeemed. Second, the security of the code and the wallets that hold value. Third, the pace at which regulators confirm how onchain assets are taxed and supervised. Japan has moved early on rules for issuers and reserves. What remains is clarifying the legal and tax treatment for public-chain distribution. That regulatory clarity is why the first two are being built there by licensed institutions.

* As of June 24, 2026, per the companies' own research: the first stablecoin issued under a trust-type scheme among yen-denominated stablecoins classified as Electronic Payment Instruments under Japan's Payment Services Act.