Dolomite adds $100 million in Concrete’s Bitcoin-backed collateral

Dolomite has added $100 million in BTCcx as collateral in its lending and borrowing markets. BTCcx is Concrete’s custody-native version of Bitcoin, backed 1:1 by coins held at BitGo. The integration was announced on October 19, 2026, and borrowing is already live. The coins themselves never leave BitGo’s qualified custody. How the BTCcx setup works BTCcx is built on Concrete’s AssetCX architecture. AssetCX issues ERC-4626 vault shares on Ethereum. ERC-4626 is a standard format for tokenized vaults, so other protocols can read and use these shares in a predictable way. Each BTCcx token reflects Bitcoin held in a 1:1 ratio at BitGo. The result is that custodied Bitcoin can serve as collateral inside Dolomite without first being moved to a wallet or wrapped by a third-party bridge. Dolomite runs the collateral market. Concrete supplies the link to regulated custody. There are two notable limits. First, only Concrete can borrow against BTCcx collateral. Second, liquidations work differently from the DeFi norm. If a position needs to be unwound, the process runs through offchain custody settlement rather than an instant onchain sale of the collateral. Building on the WLFIcx playbook BTC...