Backed Finance bCSPX is a tokenized financial instrument that brings exposure to the S&P 500 index into blockchain infrastructure. Its underlying asset is the iShares Core S&P 500 UCITS ETF USD (CSPX), which tracks the U.S. large-cap equity index. Legally, bCSPX is a tracker certificate rather than an ETF share registered directly in the token holder's name. The model combines traditional securities, institutional custody, 1:1 backing, and the ability to use the token in compatible Web3 applications.
Contents:
- Backed Finance bCSPX: Tokenized S&P 500 ETF
- bCSPX: Backing, Issuance, and Token Redemption
- Backed Finance Regulation and the Legal Structure of bCSPX
- Blockchain Networks, Chainlink, and bCSPX DeFi Integrations
- bCSPX Risks and the Development of Tokenized ETFs
1. Backed Finance bCSPX: Tokenized S&P 500 ETF
Backed Finance was founded in 2021 and focused on bringing publicly traded financial assets into blockchain infrastructure. bCSPX became the company's first product. It was initially issued as an ERC-20 tracker certificate tracking the value of CSPX — the iShares Core S&P 500 UCITS ETF USD. This means Backed does not create its own index or build a separate portfolio of 500 individual stocks.
The underlying CSPX is managed by iShares and has the ISIN IE00B5BMR087. The ETF's investment objective is to replicate the net total return of the S&P 500 index while accounting for fund expenses. The index includes around 500 large U.S. companies and provides diversified exposure to sectors such as technology, financials, healthcare, industrials, and consumer markets.
bCSPX tracks the value of this ETF through a separate structured product. When an eligible participant issues bCSPX, Backed arranges the purchase of the corresponding underlying asset through brokerage and custody infrastructure. The tracker certificate is then issued as a blockchain token. During redemption, the process is reversed: tokens are removed from circulation, and the value of the backing assets is used to calculate the payout.
This structure separates the blockchain trading layer from the traditional market. CSPX continues to exist as a regulated UCITS ETF and trades through conventional financial infrastructure, while bCSPX is a separate security that tracks its price. Therefore, the term "tokenized S&P 500 ETF" is useful for describing the product, but legally bCSPX is more accurately defined as a tokenized tracker certificate linked to CSPX.
2. bCSPX: Backing, Issuance, and Token Redemption
The Backed model is based on fully backed tokenized products. Each bToken is created against a corresponding underlying asset held by third-party custody providers. For bCSPX, that asset is CSPX. The collateral structure is designed to maintain a connection between the number of tokens issued and the value of the traditional securities backing them.
Direct issuance and redemption are not available to every wallet holder. Backed works directly with eligible investors and licensed resellers that complete the required compliance procedures. According to the product information, bCSPX has a 0.5% fee for issuance and redemption. On the secondary onchain market, transaction conditions and costs depend on the platform, blockchain network, and available liquidity.
Key elements of the bCSPX model:
- Underlying asset — iShares Core S&P 500 UCITS ETF USD with the ticker CSPX.
- Tracker certificate — bCSPX legally represents a certificate that tracks the value of the underlying ETF.
- 1:1 collateralization — the structured product is backed by the corresponding underlying asset.
- Tokenization — the financial instrument is represented as a compatible blockchain token.
- Issuance — eligible participants can create new tokens through Backed's infrastructure.
- Redemption — certificates can be redeemed according to the established product terms.
- Self-custody — once received, tokens can be held in a compatible non-custodial wallet.
The price of bCSPX is designed to follow the value of the underlying CSPX, but temporary deviations may occur on the secondary market due to liquidity, traditional exchange trading hours, and conditions in DeFi pools. Blockchain allows the token to be transferred outside standard stock market hours, while the underlying ETF itself remains dependent on the schedule and mechanics of traditional markets.
3. Backed Finance Regulation and the Legal Structure of bCSPX
The legal structure of bCSPX differs from direct ETF ownership. The current issuer of the tokenized tracker certificates is Backed Assets (JE) Limited, a company registered in Jersey and owned by Switzerland-based Backed Finance AG. The issuer has obtained the relevant corporate and regulatory consents from the Jersey Financial Services Commission.
In May 2026, Liechtenstein's Financial Market Authority approved the current Base Prospectus for the Backed program. The products are classified as certificates tracking underlying assets, while the instruments themselves are governed by Swiss law. The prospectus defines issuance terms, investor rights, risks, and other characteristics of the securities. Its approval does not constitute a guarantee of returns or an absence of investment risk.
| Component | Function | Role in bCSPX |
|---|---|---|
| Backed Assets (JE) Limited | Issuer | Issues tracker certificates |
| Backed Finance AG | Tokenizer | Provides tokenization infrastructure |
| CSPX | Underlying ETF | Determines the economic exposure of bCSPX |
| Custodians | Asset custody | Hold the underlying financial assets |
| Security Agent | Protection of holders' interests | Participates in the collateral structure |
| Blockchain | Digital settlement layer | Enables token transfers and usage |
bCSPX also has its own ISIN, CH1173294237. Backed products are not registered under the U.S. Securities Act and are not offered in the United States or to U.S. persons. Geographic and eligibility restrictions must be considered separately from the token's technical accessibility: the presence of bCSPX on a public blockchain does not by itself mean that the product is legally available to a particular investor in their jurisdiction.
4. Blockchain Networks, Chainlink, and bCSPX DeFi Integrations
bCSPX began as an ERC-20 asset, but Backed's infrastructure gradually evolved into a multichain ecosystem. For bTokens, the company has listed support for Ethereum, Gnosis, Polygon, Arbitrum, Avalanche, BNB Smart Chain, Base, and other EVM networks. Specific versions and the availability of individual assets depend on the network. Backed also introduced a bridge powered by Chainlink CCIP to move bTokens between supported blockchain networks.
Chainlink Price Feeds and Proof of Reserve became important parts of the infrastructure. Price Feeds allow DeFi protocols to access independent pricing data for the underlying CSPX. Proof of Reserve is used to compare offchain collateral with the amount of tokenized assets in circulation. Reserve data is obtained through external infrastructure and transmitted onchain through an oracle network.
bCSPX has also been used in DeFi on Gnosis Chain. In late 2024, GnosisDAO approved a liquidity incentive program for Backed's tokenized assets. In early 2025, a bCSPX/sDAI pool was created on Balancer, while bCSPX was also integrated into PWN for lending operations and use as collateral. At the peak of the program, the amount of bCSPX on Gnosis was measured in millions of dollars.
This type of composability is one of the main differences between a tokenized certificate and a traditional ETF held in a brokerage account. A blockchain asset can be programmatically integrated with DEXs, lending protocols, wallets, and cross-chain infrastructure. However, each additional integration introduces its own smart contract, oracle, liquidity, and bridge risks, meaning that using bCSPX in DeFi should not be considered equivalent to simply holding the underlying ETF.
5. bCSPX Risks and the Development of Tokenized ETFs
The first layer of bCSPX risk is associated with the S&P 500 itself. The value of the index changes along with the prices of major U.S. companies, so bCSPX is not a fixed-income instrument and does not provide capital protection. In addition, investors receive a tracker certificate rather than CSPX itself in a brokerage account, adding legal, issuer, custody, and operational layers of risk.
The blockchain model introduces additional factors, including smart contract vulnerabilities, loss of wallet access, oracle failures, bridge risks, and insufficient liquidity on a particular DEX. Proof of Reserve improves the transparency of collateral monitoring but does not eliminate market risk or guarantee immediate liquidity of the underlying assets. The price of bCSPX on DeFi markets may also temporarily deviate from the value of CSPX.
Backed's strategy changed significantly after the launch of bCSPX. In June 2025, the company worked with Kraken to launch xStocks, a broader range of tokenized U.S. stocks and ETFs. By March 2026, the number of xStocks had reached 100, while cumulative transaction volume since launch had exceeded $25 billion according to Kraken. In December 2025, Kraken announced the acquisition of Backed, bringing the issuer's team and infrastructure into a larger tokenized markets ecosystem.
bCSPX remains a notable example of an early RWA model in which a traditional ETF is used as backing for a transferable blockchain certificate. The instrument provides onchain exposure to the S&P 500 and enables DeFi integrations, but it does not make the token holder a direct owner of shares in 500 companies or a conventional holder of CSPX ETF shares. When evaluating bCSPX, it is important to consider the performance of the S&P 500, the collateral structure, prospectus terms, liquidity, custody, and the technological risks associated with blockchain infrastructure.
