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Digital payments are being adopted across a wide range of industries. QR-code payments and mobile wallets have become part of consumers’ everyday lives, while business-to-business payments are becoming faster and more automated. Yet these conventional electronic payment systems depend on a structure in which a central operator manages the ledger and users trust that operator. This creates limits on demonstrating transparency and designing incentives.

An alternative attracting attention is to use blockchain, or distributed ledger technology, as the foundation for payment instruments. In this context, blockchain does not mean speculative trading in crypto assets. It means embedding technologies such as tokens and smart contracts into real-world payment operations, making it possible to attach meaning to the act of payment itself in ways that conventional IT systems find difficult to achieve.

This article explains the value blockchain can bring to digital payments through three functions—proof, recording, and control—and describes the business impact of combining them, along with four steps for evaluating adoption.

Contents

1. Why blockchain matters for payments now
2. Structural differences from conventional electronic payments
3. Three core functions of blockchain payments
4. Three business impacts of combining the functions
5. Japan’s regulatory environment: legal clarity at the forefront of Asia
6. Four steps for evaluating adoption
7. Three constraints to recognize
8. Conclusion: adding meaning to payments

1. Why blockchain matters for payments now

The digital payments market is expanding rapidly. As payment infrastructure becomes more sophisticated, demand is also growing for ways to give meaning to the movement of money.

For example, organizations may want to track which beneficiaries receive donations, keep rewards for volunteer work circulating within a community, or transparently manage the use of public benefits. Conventional electronic payments can record the transfer of an amount, but they cannot, on their own, trace the purpose of a payment and the conditions under which it was made.

Blockchain makes this payment context digitally recordable and verifiable. When considering its adoption as a payment mechanism, the key question is what it makes possible that conventional payments cannot achieve, alongside considerations of speed and cost.

2. Structural differences from conventional electronic payments

Conventional electronic payments and blockchain-based payments have fundamentally different architectures.

Blockchain payments are not a universal upgrade over conventional systems. Conventional systems often have advantages in processing speed and cost. Blockchain is particularly useful where transparency, programmability, and independently verifiable validity are required.

3. Three core functions of blockchain payments

The value blockchain brings to digital payment instruments can be grouped into three functions: proof, recording, and control.

Function 1: Proof—verification without contacting the issuer

The value of paper vouchers and loyalty cards depends on the issuer’s brand and management practices. With blockchain tokens, the complete history of issuance, transfers, and redemption is recorded in a tamper-resistant form. This allows participants to verify that a unit was validly issued and has not yet been spent without contacting the issuer. This independently verifiable validity supports interoperability between different parties.

Function 2: Recording—connecting payments with their meaning

In conventional payments, the payment and the record of its meaning are managed in separate systems. Blockchain can embed metadata and execution conditions in the token itself, allowing payment context to be recorded and verified automatically when a payment occurs.

Function 3: Control—programmable circulation and conditions

Smart contracts can enforce rules such as:

• Restricted circulation: use only within a particular region or at participating merchants.
• Expiration dates: digital tickets that expire automatically.
• Conditions of use: requirements such as identity verification or the presence of a support worker.
• Restrictions on purpose: meal vouchers usable only at dining facilities, or medical benefits usable only at healthcare providers.

4. Three business impacts of combining the functions

• Impact 1: Automated transparency and accountability
  Combining proof and recording enables real-time tracking of public funds and donations, substantially reducing reporting costs.
• Impact 2: More precise incentive design
  Combining recording and control allows rules for awarding tokens in response to specific actions to be encoded. This supports new forms of motivation, including community currencies and the recognition of contributions.
• Impact 3: Gradual integration with financial services
  Combining proof and control enables accumulated transaction data to support more advanced financial services, such as credit assessment and installment payments, opening pathways to financial inclusion.

5. Japan’s regulatory environment: legal clarity at the forefront of Asia

From 2025 to 2026, Japan developed one of the world’s clearest legal frameworks for digital assets.

• Legal definition of electronic payment instruments (EPIs): fiat-linked stablecoins are recognized within the framework, with full-reserve requirements for issuers. Amendments in March 2025 allow up to 50% of reserve assets to be invested in short-term government bonds and certain other assets.
• Consideration of a shift to the Financial Instruments and Exchange Act: a policy direction announced in December 2025 envisaged moving crypto-asset regulation to the FIEA, with a comprehensive investor-protection framework under consideration.
• A new licensing category: a new category for intermediaries in electronic payment instruments and related transactions (ECISB) was planned for 2026. Major banks were also advancing pilot projects.

6. Four steps for evaluating adoption

1. Step 1: Select the use case
   Identify why blockchain is needed, such as transparency, conditional use, or management by multiple parties.
2. Step 2: Design the token
   Avoid unnecessary complexity. A simple two-layer structure combining a single token with non-transferable, or soulbound, points provides a starting point.
3. Step 3: Implement in stages
   Begin with a semi-distributed ledger such as Firestore, then consider moving to blockchain infrastructure such as Fireblocks once an operating track record has been established.
4. Step 4: Expand the ecosystem
   Gradually extend the system to visualize payment data, support reporting to public authorities, and connect to financial institutions through APIs.

7. Three constraints to recognize

1. Constraint 1: The trade-off between performance and cost
   Gas fees and processing limits require an appropriate balance between on-chain and off-chain operations.
2. Constraint 2: Uncertainty over legal classification
   Depending on the design, an instrument may fall under prepaid payment instruments, electronic payment instruments, or crypto assets. Prior consultation is therefore essential.
3. Constraint 3: User experience complexity
   Private-key management can create a substantial barrier for older users. A practical approach is to use blockchain in the back end while keeping the user interface familiar, resembling existing QR-code payments.

8. Conclusion: adding meaning to payments

The significance of blockchain in payments lies in making proof of value, the recording of context, and circulation rules programmable. Building on Japan’s clear regulatory framework, the use of blockchain as part of social infrastructure, beyond a tool for speculation, is moving closer to practical implementation.

By Tokyo Emerging Technologies Capital (TETC) / Nova Capital Advisory Inc.

This article does not indicate a contractual relationship with any particular company or organization and does not constitute an investment recommendation.