tzBTC Review 2026: Bitcoin-backed token on Tezos

tzBTC is a Bitcoin-backed token intended for use on Tezos. The project says each token is backed by BTC held by a group of institutional Keyholders, with Gatekeepers managing minting and burning after KYC checks. This gives users access to Bitcoin value in Tezos applications, but makes redemption dependent on those institutions and compliance providers.

The 2.0 version is presented as an upgrade to the original system, with automated Keyholder processes and a cheaper self-service route for eligible individuals. The project also outlined plans for minting and burning on selected additional blockchains. Its page includes 2024 milestones but does not confirm which upgrades have been completed, so check the current service status before relying on them.

tzBTC is designed to bring Bitcoin value onto Tezos. The project says BTC collateral is held by Keyholders, a group of independent institutions that manage the Bitcoin reserve and authorize changes to the token supply. Gatekeepers provide the user-facing route: they conduct compliance checks and handle minting or burning requests. This means the token depends on both the backing institutions and the process for redeeming it, rather than relying only on a trustless on-chain mechanism.

The 2.0 proposal aims to automate Keyholder operations using the Acurast execution environment and offer eligible individuals self-service access through the tzBTC website. The project says this should reduce delays and fees, while retaining Gatekeeper KYC. Its page also lists multichain minting and burning as a planned extension. It does not clearly establish whether those upgrades or the multichain feature are now operational.

The tzBTC 2.0 page describes minting and burning with no service fees beyond network gas. It also says Keyholder fees are intended to be covered by a Tezos Foundation subsidy. The page does not confirm whether these terms are currently in effect, so check the applicable Gatekeeper terms and transaction details before proceeding.

tzBTC relies on institutional custody: Keyholders hold the BTC backing and participate in token supply management, while Gatekeepers control user access to minting and redemption. This creates counterparty and redemption risk in addition to the usual smart-contract and wallet risks. The project describes its Keyholders as independent, licensed institutions and its compliance model as KYC-based, but these descriptions do not remove the need to assess the custodians and applicable terms.

The page describes Acurast automation and the use of secure elements, but does not identify an independent smart-contract audit or provide an independent reserve attestation. It also does not confirm whether the 2.0 automation is live. Review current redemption procedures and verify the token contract before use. Check local rules before using crypto services; users should be 18 or older and gamble responsibly—tzBTC is not a gambling product.

tzBTC may suit Tezos users who want exposure to Bitcoin value in Tezos applications and are willing to complete KYC to mint or redeem. It is less suitable for users who require permissionless BTC bridging, direct control of the Bitcoin reserve, or a fully trust-minimized redemption process.