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In conventional blockchain designs, it is impossible to achieve scale if every computer has to process all transactions. To solve this problem, Nexus has designed a blockchain architecture using parallel processing which can achieve scale while providing other desirable qualities such as immutability and security. This architecture has been named “Multi Dimensional Chaining”, due to it having three core dimensions that define its structure, along with three forms of consensus. Trust, Nexus’ time-based security mechanism, is used to improve the security of the network by requiring time to be continuously contributed in order to validate transactions. This design ensures that the protocol stays distributed while share based weighting lowers miner centralization. This architecture is being implemented through three major upgrades: Tritium (3.0), Amine (4.0), and Obsidian (5.0).Nexus incorporates technology designed to negate the threat posed by theoretical quantum computers. The ledger combines 571-bit private keys, 1024-bit Skein and Keccak quantum-resistant hashing algorithms, and an evolving signature scheme called signature chains. With Tritium, signature chains will maintain the integrity and security of your account by updating your key-pair after every transaction, and obscuring public keys until a transaction is made. This offers several advantages over equivalent quantum-resistant schemes, being extremely compact and lightweight, making it ideal for blockchain applications.