Sell. The established path: convert to USD, document the conversion, fund the down payment. It works with any crypto-experienced lender, and the sale can be timed at closing rather than months early. The cost is the taxable event and — if you cash out through a retail exchange — withdrawal limits and wire timing that need managing.
Pledge. The 2026 development: token-backed mortgage products in the Better/Coinbase mold let qualified borrowers pledge BTC or USDC as down-payment collateral without selling. Read the custody terms before falling in love: these programs require the pledged assets to sit in the partner exchange's custody — coins in your hardware wallet don't qualify until you move them there — and they carry program-specific liquidation and lien terms. They fit borrowers who want leverage, refuse to sell, and are comfortable handing custody to an exchange for the life of the arrangement. They don't fit self-custody holders, and they're irrelevant to cash buyers. The crypto-backed mortgage breakdown runs the full cost-benefit.
Verify. The third path, and the one the industry's exchange-centric framing skips: your holdings can be verified as assets wherever they live — cold storage, hardware wallet, multisig, or an exchange account. A RealScore™ report documents ownership, holdings, and a volatility-adjusted USD value in a form a lender can independently verify — without you moving a single coin. Pair it with conversion at closing and you've answered both of the lender's questions with no exchange custody, no early sale, and no seasoning detour.