Tether is based on Bitcoin's blockchain protocol, the secure and reliable distributed ledger technology. Tethers is a pegged cryptocurrency, reserved in a 1-to-1 ratio backed by USD, and is independent from market volatility, and liquidity limitations. Tether implements the Proof-of-Reserve protocol and is subject to regular audits. The underpinning bank partnerships, compliance and legal framework supply a secure basis for the custody of reserve assets and to issue Tether while minimizing risk.