On-chain credit score: what it is and how to build one in 2026
An on-chain credit score is a single number, derived from your public wallet history, that lenders and DeFi protocols can use to decide whether to extend you credit without a bureau pull or a paystub. The Teller Score is one example: it summarizes swap volume, borrow repayments, holdings, and verified income on a 0–1000 scale.
For two decades, “your credit score” meant one of three bureau-reported numbers built from cards, auto loans, and mortgages. That model works for the off-chain economy, but it doesn’t see any of the activity that happens on a public blockchain — your swaps, your loan repayments, the assets you’ve held for years. An on-chain credit score is the missing layer. It reads the wallet history that lenders, marketplaces, and DeFi protocols can already see, and turns it into one number they can underwrite against.
What is an on-chain credit score?
An on-chain credit score is a number — usually on a 0–1000 scale — derived from a wallet’s public activity. The score summarizes signals that a lender or protocol cares about: how much value moves through the wallet, whether prior loans were repaid, how long the wallet has been active, and (in newer systems) verified off-chain attributes like KYC and income.
Unlike a bureau credit score, every input is verifiable. Anyone with a block explorer can confirm a transaction happened. That makes the score portable: a lender on Base, a marketplace on Solana, and an underwriter on Ethereum can all read the same wallet and come away with the same view.
How is an on-chain credit score calculated?
Each scoring system weighs inputs differently, but most rely on the same six categories. The Teller Score uses these:
| Category | Cap | What it measures |
|---|---|---|
| Swap | 200 | Weekly USD swap volume, capped so churning doesn’t game the score. |
| Borrow | 200 | Monthly USD borrow originations and on-time repayments. |
| Apply | 200 | Completed partner programs — cards, brokerages, savings. |
| Refer | 200 | Friends you referred who funded their own wallets and earned points. |
| Hold | 100 | Connected-exchange balances and verifiable USD holdings. |
| Income | 100 | Verified annual income (on-chain inflows, payroll, or W-2). |
The total is capped at 1,000. Higher tiers unlock larger loan amounts, lower APRs, and access to gated affiliate offers.
Why does an on-chain credit score matter?
Three things change once a wallet has a usable score:
- Better loan terms. Collateralized lenders can drop required loan-to-value ratios as the score rises. Unsecured lenders (cards, personal loans) can extend a line at all.
- Pre-qualification without a bureau pull. Wallets with a strong score can be matched to offers without the lender running a hard or soft inquiry on a U.S. credit file.
- Portability. The score moves with the wallet, not the device or the email. Connect the same wallet to a different app and your standing is preserved.
How do I build an on-chain credit score?
Four moves get most wallets to a usable tier within a few weeks:
- Hold and use the wallet for routine activity.Swap volume, deposits to staking or yield products, and bridging across chains all register.
- Take and repay a small collateralized loan.The repayment is what really moves the borrow category — origination alone caps lower.
- Verify identity and income. A zk-KYC proof (via Self Protocol or similar) plus an on-chain recurring-income detection or a W-2 upload pushes the Income category quickly.
- Connect a centralized exchange or bank. Coinbase OAuth, an exchange API key, or an EU/UK bank connection raises the Hold category by proving your full balance sheet.
What an on-chain credit score is not
Worth being explicit, because lenders and regulators care:
- It is not a FICO score, VantageScore, Schufa, or bureau credit-file product, and it has no relationship to your regulated credit history.
- It does not create or hide a hard inquiry.
- It is not investment advice. The score doesn’t tell you what to hold; it tells lenders what you’ve done.
- It is not a guarantee any lender will approve you. Lenders run their own underwriting on top of the score.
Where to start
The Teller Score is free to check, computes in real time from any connected wallet, and feeds the loan-offer marketplace directly. Open the app, connect a wallet, and the score appears on the Score page with a per-category breakdown and the next-best move to grow each one.
Frequently asked questions
No. A FICO score is built from bureau-reported credit history (cards, loans, mortgages) and is regulated by the U.S. Fair Credit Reporting Act. An on-chain credit score is built from public blockchain activity (swaps, borrows, repayments, holdings). The two are independent and complementary — many borrowers will eventually have both.
No. On-chain credit scores are not reported to Equifax, Experian, or TransUnion, and reading on-chain data does not generate a hard or soft credit inquiry. They live in a separate, parallel system.
Typical inputs include swap volume, borrow originations and repayments, length of on-chain history, balance and asset diversity, and verified income inflows (recurring stablecoin deposits). Some scoring systems also factor in connected centralized-exchange balances and completed partner programs.
Yes. Defaults, liquidations, dormant activity, and unwinding holdings can all reduce the score. Most scoring systems also cap how much volume in a given category contributes to your total, so you can't game the score by churning trades.
You can typically reach the lower tiers within a few weeks of consistent swap and borrow activity, plus verifying your identity and income. Reaching the top tier usually requires a multi-month track record of timely loan repayments and verified income above a threshold.
Open Teller and put this into practice
Connect a wallet, build your on-chain credit score, and see real loan offers matched to your position — all in one place.
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