SUBFROST

Set up Subfrost and your Bitcoin wallet

Head to the official Subfrost app to access the PERMAFROST $FUEL farming campaign . в†’ Create a new Bitcoin wallet with one of the wallet options shown in the interface, such as Subfrost, Oyl, OKX, UniSat or Xverse . в†’ Save the recovery phrase securely offline, and use this wallet specifically for Subfrost , and do not send Ordinals, Runes or BRC-20 assets to it . Important wallet warning: Subfrost explicitly warns that using a wallet containing Ordinals, Runes or BRC-20 assets will result in burning them because transactions may spend the Bitcoin UTXOs carrying those assets. в†’ Transfer the $BTC you plan to use, and keep some BTC aside for Bitcoin network fees. Before transferring funds: check Subfrost on DefiLlama for the latest TVL, and review the latest frBTC signer setup and audit information in the official documentation. Subfrost currently documents nine signers whose identities are not yet public, while its frBTC documentation states that the complete end-to-end protocol has not undergone a formal audit. These details can change, so verify the latest status before depositing. Security history: In July 2026, an Alkanes indexer bug created phantom $DIESEL and allowed an attacker to obtain 82.3 frBTC in the corrupted indexed state. According to Subfrost's official incident post-mortem, the signer layer rejected the attempted unwraps and no reserve BTC left the protocol .