Quantstamp is a leader in blockchain security, offering expert security audits and blockchain solutions. Major corporate and crypto companies including Ethereum 2.0 (Client Prysmatic Labs), Binance, MakerDAO, Chainlink, eToro and the World Economic Forum choose Quantstamp to protect their blockchain applications. QSP is an ERC-20 token used to verify smart contracts in QSP Decentralized Security Protocol. Users can purchase automated smart contract scans with QSPs, and validators can earn QSPs to help provide decentralized security scans across the network at protocol.quantstamp.com. The decentralized protocol is open sourced at https://github.com/quantstamp.