What Makes SBT Different from NFT? Understanding Soulbound Tokens Through Features and Use Cases

What Is SBT (Soulbound Token)?

SBT (Soulbound Token) refers to a non-transferable NFT. NFTs are digital assets that exist on the blockchain and are used to prove ownership in fields such as art and gaming. However, because NFTs can be bought, sold, and transferred by anyone, they are not suitable for proving personal abilities, credentials, or achievements.

To address this limitation, SBT was proposed by Vitalik Buterin, one of the co-founders of Ethereum, along with other researchers. Once an SBT is issued, it cannot be transferred to another person by any owner, making it an ideal tool for proving an individual's identity and rights. This non-transferable characteristic ensures that SBTs remain permanently bound to the original recipient's wallet and identity.

SBTs represent a paradigm shift in how we think about digital ownership and identity verification. Unlike traditional NFTs that focus on tradeable digital assets, SBTs are designed to represent aspects of a person or entity that shouldn't be commodified or transferred, such as educational credentials, professional certifications, membership status, or reputation scores.

Three Key Features of SBT

• Non-Transferable Nature
• Identity and Rights Verification
• Blockchain Technology Integration

Feature 1: Non-Transferable Nature

Once acquired, an SBT is permanently linked to an individual's wallet and ID, making it impossible to sell or transfer to others. This design ensures the integrity of the token as a personal identifier.

This non-transferable characteristic allows SBTs to record "personal proof" and "trust" on the blockchain, preventing unauthorized acquisition of the owner's rights. The permanent binding between the token and its original recipient creates an immutable record of achievements, credentials, or affiliations that cannot be borrowed, stolen, or fraudulently claimed by others.

The non-transferability also creates a new paradigm for digital credentials. Unlike traditional certificates that can be forged or misrepresented, SBTs provide verifiable proof that remains permanently associated with the legitimate recipient. This feature makes SBTs particularly valuable for representing accomplishments and qualifications that should not be tradeable or transferable.

Feature 2: Identity and Rights Verification

SBTs serve to prove "personal identity," "trust," and "rights," making them ideal for assets that cannot be purchased, such as qualifications, achievements, and records. They provide a tamper-proof way to represent non-fungible aspects of personal identity.

SBTs can be used for various purposes including:

• Driver's licenses and passports: Official identification documents that prove citizenship and driving privileges
• Professional certifications and licenses: Credentials that demonstrate specialized skills, training, or authorization to practice in specific fields
• Digital art and music credentials: Proof of creation, authorship, or contribution to creative works
• Academic degrees and diplomas: Educational achievements and qualifications from institutions
• Membership credentials: Proof of belonging to organizations, clubs, or exclusive communities

These applications demonstrate how SBTs can serve as verifiable proof of personal rights and prevent forgery or tampering. The blockchain-based nature of SBTs ensures that these credentials can be instantly verified by any party with appropriate access, eliminating the need for time-consuming manual verification processes.

Feature 3: Blockchain Technology Integration

SBTs are issued using blockchain technology, which makes them highly resistant to tampering and fraud. This technological foundation ensures the security and authenticity of the tokens.

By leveraging blockchain technology, SBTs can more securely protect the owner's identity and rights, enabling them to function as highly reliable proof mechanisms. The decentralized nature of blockchain means that SBT records are distributed across multiple nodes, making it virtually impossible for any single entity to alter or delete credential information without detection.

The transparency of blockchain technology also allows for public verification of SBT authenticity while maintaining privacy of personal information. Smart contracts can be programmed to automatically manage SBT issuance, revocation, and verification processes, reducing administrative overhead and human error in credential management systems.

Differences Between SBT and NFT

While both SBTs and NFTs are digital assets issued using blockchain technology, they have important fundamental differences that determine their appropriate use cases.

SBTs, being non-transferable, are suitable digital assets for proving identity and rights, while NFTs, being transferable, are suitable digital assets for proving ownership of digital art, games, and other tradeable items.

The adoption of SBTs is progressing within Japan and internationally, with many companies and local governments beginning to utilize them. As technology development and regulatory frameworks for both SBTs and NFTs continue to advance, further applications across various fields are expected. The complementary nature of these technologies suggests that both will play important roles in the future digital economy.

SBT Use Cases

• Digital Certificates and Academic Credentials
• Credit History Verification
• Crowdfunding and Community Participation

Use Case 1: Academic and Professional Credential Verification

Because SBTs cannot be transferred to anyone else once issued, they are ideal digital assets for proving academic and professional credentials. This immutability ensures that credentials remain authentic and verifiable throughout a person's lifetime.

In practice, the Chiba Institute of Technology's Transformation Center, led by Joi Ito, has initiated Japan's first issuance of NFT-based learning credential certificates. This groundbreaking implementation demonstrates how educational institutions can leverage blockchain technology to issue tamper-proof academic records.

Traditional academic certificates and professional resumes carry risks of forgery and tampering. By utilizing SBTs, these risks can be significantly reduced, allowing for more reliable verification of academic and professional credentials. Educational institutions can issue SBTs upon degree completion, professional organizations can issue them for certifications, and employers can verify these credentials instantly without contacting issuing institutions.

The use of SBTs for academic credentials also enables the creation of comprehensive, verifiable learning portfolios that follow individuals throughout their educational and professional journeys. This can include not only formal degrees but also completed courses, acquired skills, participation in workshops, and other learning achievements.

Use Case 2: Credit History Verification

By holding an individual's payment history and credit scores through SBTs, they can serve as collateral for creditworthiness when applying for loans or financing. This creates a portable, verifiable credit reputation system.

The domestic NFT project "Live Like A Cat" has begun issuing EC site membership rights as SBTs through their official online shop "Matatabi-ya," conducting practical experiments with SBTs in e-commerce settings. This innovative approach demonstrates how SBTs can be used to build trust and reputation in online marketplaces.

SBT-based credit systems can potentially provide financial inclusion for individuals who lack traditional credit histories. By recording on-chain payment behaviors, community participation, and other trust indicators, SBTs can help build alternative credit scoring systems that are more transparent and accessible than traditional credit bureaus.

Use Case 3: Crowdfunding and Community Participation

SBTs can also function as crowdfunding mechanisms and proof of community participation. They enable creators to build engaged communities while providing supporters with verifiable proof of their contribution and support.

One example is the crowdfunding campaign for the TV anime series "Shinobanai! Crypto Ninja Sakuya," which began in recent years. By purchasing SBTs, supporters could contribute to the anime production activities, marking a world-first case of using SBTs for anime production funding. Additionally, passport NFT holders were scheduled to receive airdrops of physical items, creating a bridge between digital and physical rewards.

This use case demonstrates how SBTs can create lasting bonds between creators and their communities. Unlike traditional crowdfunding where the relationship often ends after the project is funded, SBT-based crowdfunding creates permanent, verifiable records of support that can unlock ongoing benefits and recognition for early supporters.

Future Prospects of SBT

SBT (Soulbound Token) is a non-transferable digital asset issued using blockchain technology. Because SBTs serve to prove the owner's identity and rights, they are expected to be utilized in various applications across different sectors.

The future prospects of SBTs can be viewed from two main perspectives:

1. Increasing Corporate Adoption
2. Growing Use by Public Institutions

1. Increasing Corporate Adoption

Because SBTs are suitable digital assets for identity and rights verification, they are expected to be utilized in various business operations. Companies across industries are exploring how SBTs can streamline processes and enhance security.

Potential corporate applications include:

• Identity verification: Streamlining KYC (Know Your Customer) processes and employee authentication
• Professional certification: Verifying employee qualifications, training completion, and skill levels
• Customer relationship management: Creating verifiable loyalty programs and membership tiers
• Supply chain verification: Tracking certifications and compliance throughout supply chains
• Access control: Managing secure access to facilities, systems, and confidential information

As improvements in operational efficiency and security are anticipated, it is expected that more companies will adopt SBTs in the coming years. The technology's ability to reduce fraud, streamline verification processes, and create transparent credential systems makes it attractive to businesses seeking to improve their operations.

2. Growing Use by Public Institutions

By utilizing blockchain technology, SBTs can prevent data tampering and unauthorized use, making them valuable for public institutions. Governments and municipalities are increasingly exploring SBT implementations for various public services.

Potential benefits for public institutions include:

• Administrative efficiency: Streamlining government services, reducing paperwork, and automating verification processes
• Enhanced security: Protecting citizen data and preventing identity fraud in government systems
• Digital identity systems: Creating comprehensive, secure digital identity frameworks for citizens
• Educational credentials: Issuing tamper-proof diplomas and certificates from public institutions
• Voting systems: Potentially enabling secure, verifiable digital voting mechanisms
• Healthcare records: Managing medical credentials and patient records securely

By leveraging SBTs, public institutions can gain these benefits, making it highly likely that they will be introduced in administrative procedures and public service delivery. The technology's transparency and security features align well with the needs of government organizations to serve citizens efficiently while maintaining data integrity.

Conclusion: SBT Has High Potential for Social Implementation

This article has explained the overview of SBT, its differences from NFT, its features, and use cases. SBT (Soulbound Token) is a non-transferable digital asset issued using blockchain technology that serves as a powerful tool for identity and rights verification.

While SBT is still a newly implemented technology, as technological development and regulatory frameworks continue to advance, its utilization across various applications is expected to expand significantly. The technology addresses fundamental challenges in digital identity, credential verification, and trust establishment in online environments.

Attention is focused on the future expansion and social adoption of SBTs, as they have the potential to transform how we prove identity, establish trust, and manage credentials in the digital age. The unique characteristics of SBTs—their non-transferability, blockchain-based security, and ability to represent non-fungible aspects of identity—position them as a crucial technology for building more secure, efficient, and trustworthy digital systems across both private and public sectors.

FAQ

What is the core difference between SBT (Soulbound Token) and NFT?

NFTs are tradeable and transferable digital assets with monetary value. SBTs are non-transferable tokens bound to holders, representing reputation or credentials without trading capability or market value.

Why can't SBT be transferred or traded, and what's the significance of this design?

SBT's non-transferability ensures authenticity and prevents fraud. By binding tokens to individual wallets, it establishes verifiable credentials and identity records that cannot be manipulated or counterfeited, protecting ecosystem integrity.

What are the practical use cases of SBT? What advantages does it have compared to NFT?

SBT serves as permanent, non-transferable identity verification and credentials for education, employment, and reputation systems. Unlike NFT, SBT cannot be traded or transferred, making it ideal for soulbound achievements and qualifications that require long-term validity and authenticity.

How to understand the 'soulbound' characteristic of SBT? How does it ensure the authenticity of identity?

SBT's 'soulbound' feature binds tokens to on-chain identities, creating an immutable credential record. It ensures authenticity through blockchain verification, preventing forgery and enabling transparent identity validation across web3 ecosystems.

SBT在凭证、证书、会员权益等领域如何应用？

SBT用于存储和验证专业证书、执照、学位等数字凭证，允许个人安全控制和共享数据。在会员权益中，SBT记录用户身份和权益状态，实现去中心化身份认证与权限管理。

What is the technical difference between SBT and NFT?

SBT (Soulbound Token) is non-transferable and bound to a wallet address, while NFT (Non-Fungible Token) is freely transferable and tradable. SBT cannot be sold or exchanged, whereas NFT can be traded on markets. SBT is designed for identity and credentials, while NFT represents unique digital assets.