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Token Trust: How Soulbound NFTs unlock the future of Onchain finance

March 18, 2025

blockchain technology tokenization, and smart contracts -- real world use cases blog series with Maredith Hannon Sapp
Maredith Hannon

Maredith Hannon

Director of Business Development, Digital Assets

Kelly Reddington

Kelly Reddington

Marketing and Research Analyst

Token Trust: How Soulbound NFTs unlock the future of Onchain finance

By Maredith Hannon and Kelly Reddington

Over the past decade, the financial world has wrestled with a critical challenge: identity verification. Whether in traditional finance or onchain transactions, verifying who someone is, remains a fundamental issue. The implications range from fraud prevention and anti-money laundering (AML) compliance to improving customer experience and regulatory adherence.

Identity verification is a pain point in both traditional markets and blockchain-based ecosystems. In traditional finance, legacy identity systems rely on centralized databases, manual processes, and repeated verifications across different institutions. These systems are costly, inefficient, and vulnerable to breaches. Meanwhile, onchain identity presents its own challenges—wallet addresses are pseudonymous by default, making it difficult to enforce compliance without introducing invasive tracking.

At WisdomTree, we believe that upgradeable, non-transferable identity tokens, such as Soulbound NFTs (SBTs), offer an innovative solution. SBTs are blockchain-based credentials that are permanently bound to a specific wallet and cannot be transferred or traded. These tokens can serve as verifiable proof of identity, reputation, or credentials while maintaining user privacy. By leveraging SBTs, financial institutions can bridge the gap between compliance and user privacy, enabling more seamless operations in both traditional and decentralized finance (DeFi) worlds.

The Identity Problem: TradFi vs. DeFi

Traditional Finance:

  • Every time a customer interacts with a financial institution—opening an account, applying for credit, or moving funds—they undergo Know Your Customer (KYC) and AML verification.
  • These processes are repetitive, requiring customers to share sensitive data with multiple institutions, increasing both security risks and compliance costs.
  • Centralized databases storing identity data become prime targets for hackers.

DeFi and Onchain Identity:

  • Wallet addresses do not inherently contain identity information, making them easy for bad actors to exploit.
  • Protocols that want to enforce compliance (e.g., accredited investor checks) currently rely on offchain databases or whitelists—both of which are cumbersome and easy to circumvent.
  • Without identity solutions, DeFi risks either falling outside regulatory frameworks or becoming as bureaucratic as TradFi.

Soulbound NFTs: A Secure, Onchain Identity Framework

Soulbound NFTs provide a novel way to link verified identities to blockchain wallets without compromising privacy or security. Here’s how they work:

  • Non-Transferable: Unlike traditional NFTs, SBTs cannot be sold or moved between wallets. They remain permanently bound to the original holder’s wallet address, preventing identity fraud.
  • Upgradeable and Revocable: Institutions can update and/or revoke credentials as compliance requirements change, ensuring they remain relevant over time.
  • Zero-Knowledge Proofs for Privacy: SBTs can be designed to allow users to prove aspects of their identity (e.g., age, accreditation status) without revealing personal details.

How SBTs Solve the Compliance Puzzle
By integrating verified identity information directly onchain, SBTs provide a streamlined framework that not only simplifies compliance but also enhances security and efficiency throughout every stage of user verification.

  1. KYC Without Repetition
    • Once a user is verified by an institution like WisdomTree, they receive a Soulbound NFT attesting to their verified status.
    • Other platforms or financial services can then check the SBT rather than requiring the user to go through KYC again.
  2. Dynamic Compliance & Access Control
    • Smart contracts can query an SBT before permitting transactions, ensuring that only eligible users can access regulated products.
    • For instance, an SBT could verify that a user is an accredited investor without exposing their net worth or personal details.
  3. Mitigating Wallet Theft & Fraud
    • If a wallet is compromised, identity recovery is possible through social recovery mechanisms or multi-signature wallets that require institutional reissuance of the SBT.
    • This is a significant improvement over current crypto identity models where lost private keys mean permanent loss of assets.

WisdomTree’s Implementation of Soulbound NFTs

At WisdomTree, we’ve integrated Soulbound NFTs into our WisdomTree Connect platform, which allows businesses to purchase and manage tokenized assets in a compliant manner.

  • Institutional Onboarding:
    • Institutions receive a Soulbound NFT after completing KYC verification, which they can use to transact seamlessly across our platform.
  • Regulatory-Compliant Tokenized Assets:
    • Tokenized funds require users to hold an SBT, in seeking to ensure wallet-to-wallet transactions only occur between verified users.
  • Interoperability & Cross-Chain Identity:
    • Our SBT framework is designed to work across Ethereum, Stellar, and other blockchain ecosystems, making it flexible for both TradFi and DeFi use cases.

Looking Ahead: The Future of Onchain Identity

The move from centralized identity databases to decentralized, blockchain-based identity solutions is inevitable. WisdomTree is at the forefront of this shift, leveraging Soulbound NFTs to provide secure, scalable, and compliant identity verification.

In the coming years, we expect:

  • Adoption Across Financial Services: More banks, asset managers, and fintech platforms will integrate Soulbound NFTs for KYC, lending, and trading.
  • Regulatory Alignment: Governments and regulators will recognize the benefits of decentralized identity and provide clearer guidance for implementation.
  • Privacy-Enhancing Technologies (PETs): Zero-knowledge proofs and multi-party computation will further enhance the security and privacy of onchain identity.

By embracing Soulbound NFTs as a compliance tool, we can create an ecosystem that balances financial innovation with the security and trust that institutions and users require.

At WisdomTree, we are excited to lead this transformation—because the future of finance is onchain, and identity is the key to unlocking it.

Learn More
To learn more about WisdomTree’s digital asset initiatives and how we’re integrating onchain identity, visit WisdomTree Connect.

About the contributors

Maredith Hannon

Maredith Hannon

Director of Business Development, Digital Assets

Maredith Hannon joined WisdomTree in May 2022 as Director of Business Development for Digital Assets. In this role, she is responsible for leading business development and partnerships for WisdomTree’s digital assets division, including WisdomTree Prime.

Prior to joining WisdomTree, Maredith was an Executive Director at Morgan Stanley, Head of Business Development and Strategy for the Outsourced Chief Investment Office (OCIO). In this role, she was responsible for sales and operations across business development, marketing, strategic initiatives, and business management. OCIO’s client base included institutional clients, including family offices, ultra-high net worth clients, defined contribution and defined benefit plans, nonprofits, and corporations, both domestic and international. Maredith began her career at Bank of America Merrill Lynch where she worked across product, sales, and strategy roles before becoming Director, Head of Sales Performance and Strategy for their Workplace Financial Solutions business, which focused on delivering wealth management solutions to institutional clients and their employees.

Maredith graduated cum laude with a Bachelor of Arts degree from Georgetown University.

Kelly Reddington

Kelly Reddington

Marketing and Research Analyst

Kelly Reddington is a Marketer and Research Analyst at WisdomTree, specializing in digital assets and the evolving financial infrastructure. He plays a key role in product marketing, executive communications, and content strategy for WisdomTree's digital assets initiatives, helping articulate the firm's vision for the future of tokenization and onchain finance. Prior to joining WisdomTree, Kelly built a career at the intersection of cybersecurity, marketing, and blockchain technology. He holds a degree in Business Administration and Marketing from the University at Buffalo. With a passion for crypto, DeFi, and emerging financial technologies, Kelly brings a unique perspective to how these innovations are communicated and understood by both institutional and retail audiences.

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