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Starknet Launches strkBTC for Optional Shielded Bitcoin on Layer 2

The wrapped asset targets institutions that need private transactions with selective disclosure for audits.

Overview

  • strkBTC went live on Starknet on Tuesday, May 12, offering a choice between standard public transfers and a privacy mode.
  • In shielded mode, STARK proofs verify transactions while hiding the sender, receiver, and amount from public view.
  • A five-member federation oversees minting and redemptions, with NEAR handling the bridge and Atomiq and Garden supplying BTC and WBTC routes.
  • Users can share viewing keys for audits, and Starknet routes those keys to an independent third‑party auditor.
  • The launch follows a broader shift to build Bitcoin privacy in adjacent systems like Liquid, WBTC with RAILGUN, Fedimint, and Cashu rather than changing Bitcoin’s base layer.