Bitcoin lender comparison
Compare Unchained's multisig Bitcoin-backed business loans with Stackit.ai's onchain treasury and agent workflow.
Last reviewed July 11, 2026 · Official sources linked below
Short answer
Unchained offers large Bitcoin-backed business loans using a collaborative multisig custody model where the borrower holds a key. Stackit.ai is a BTC/ETH treasury-policy layer using onchain lending rails and machine integrations. Unchained fits a U.S. business seeking a large, serviced BTC loan; Stackit.ai fits a team building recurring treasury automation and onchain monitoring.
This compares product structure, not just the lowest advertised APR. Rates, LTVs, eligibility, fees, and market parameters can change.
| Dimension | Stackit.ai | Unchained |
|---|---|---|
| What it is | A treasury policy and orchestration layer that uses third-party lending markets. The public product currently includes a self-serve sandbox and live market-rate reads; production access is assisted and the Base production API is marked in development. | A Bitcoin financial-services company offering business loans secured by BTC. |
| Borrow rate | The underlying Aave variable borrow rate is passed through and shown separately from Stackit.ai action fees. Live native-USDC rates are available for Base, Arbitrum, and Polygon. | A quoted fixed loan rate/APR shown by Unchained for the available business product. |
| LTV and downside response | Rules are designed to monitor LTV and prepare or execute approved repayment actions as risk rises. Exact thresholds and execution depend on the approved policy, liquidity, oracle data, gas, and production availability; liquidation risk cannot be eliminated. | Loan-specific starting LTV and thresholds are defined in the borrower's agreement. Margin-call and liquidation provisions apply; the borrower manages the loan with Unchained's servicing team. |
| Custody and control | Documented wallet-sovereign flows return unsigned transactions. Delegated automation requires revocable, policy-scoped permission; Stackit.ai says it does not hold private keys. | Collaborative multisig model in which the borrower holds one key; Unchained says collateral is not rehypothecated. |
| Term | No separate fixed loan term in the public sandbox; the underlying onchain market determines the debt mechanics. | Current public materials describe a fixed payment/term structure. |
| Other costs | Aave interest plus published Stackit.ai per-action fees and network/protocol costs. Current fees are itemized in fees.json; protection and repayment actions carry no Stackit.ai fee, though gas and protocol costs can still apply. | Quoted interest/APR and agreement-specific fees. The public page currently targets loans of at least $150,000. |
About the alternative
Unchained's current loan page targets U.S. business entities, with a $150,000 minimum, a fixed term, and a collaborative custody structure. Its comparison material emphasizes no rehypothecation and borrower participation in multisig key control.
The key distinction
Stackit.ai aims at smaller, repeatable treasury actions and agent/API operation rather than a large manually originated business loan. Its rate is tied to the underlying onchain market instead of a quoted lender APR.
Eligible U.S. businesses needing a large Bitcoin-backed loan and prioritizing collaborative multisig custody and human loan servicing.
Businesses and autonomous agents that want recurring BTC/ETH treasury policies, live protocol rates, and API/MCP integration.
The reviewed current loan page is specifically for eligible U.S. business entities. Availability can change, so verify directly with Unchained.
Unchained describes collaborative multisig custody where the borrower holds one key and the collateral is not rehypothecated.
Stackit.ai explicitly publishes REST, MCP, x402, OpenAPI, and sandbox interfaces. Unchained's reviewed loan experience is a serviced business lending product.
Competitor facts come from official product or protocol documentation. Stackit.ai facts come from its public docs, endpoints, and current availability switch. Marketing rates are not treated as guaranteed offers. Review your personalized terms before borrowing.
Educational comparison only; not financial, legal, tax, or investment advice. Crypto-backed loans can lose collateral through liquidation, smart-contract failure, oracle error, market gaps, custody failure, or other execution risks.
Start with live protocol rates, add every fee, then test how your LTV behaves before you choose a borrowing path.
