strkBTC is a privacy-focused Bitcoin token on Starknet. It's an ERC20 token backed 1:1 by real BTC locked on the Bitcoin network, redeemable at any time. The core idea is to solve one of Bitcoin's oldest contradictions: it's the most sovereign money ever created, yet every transaction, your balances, counterparties, payment history, contracts , is permanently visible to anyone on the public ledger. strkBTC gives Bitcoin holders the ability to transact privately without giving up Bitcoin's underlying verifiability.