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Nexus Market, as a platform using blockchain technologies to ensure data safety, uses a number of mechanisms to prevent unauthorized information changes. These mechanisms include in detail: 1. Using blockchain technology for data storage All transactions and operations are recorded in blocks, which are then binded by a chain. Each block contains the hash of the previous block, which creates an irreversible chain. If someone tries to change the data in one block, its hedgehog will change, which will lead to the inconsistency of the entire chain and the detection of unauthorized changes. 2. Cryptographic signatures and authentication Each transaction is signed by the sender's private key. This allows you to verify the authenticity of the data and the owner. If someone tries to change the transaction, the signature will become invalid, which will immediately be revealed during verification. 3. Distributed network of participants (decentralized consensus) Nexus Market works on the basis of a decentralized network of nodes that coordinate and confirm each transaction. Before adding a new block, the nodes use consensus algorithms (for example, Proof of Work or another mechanism), which makes any attempts to change the data after confirmation by almost impossible without the consent of most participants. 4. Data immutability After confirming and adding the block to the chain, its contents become practically unchanging. Any change will require the recalculation of all subsequent hashes and re -approval with the entire network, which is very costly and practically impossible. 5. Transparency and verification All transactions and changes are recorded in a public chain, which allows any participant or an outside observer to check the integrity of the data. This increases the level of trust and complicates attempts to hide or change information. Together, these mechanisms make the Nexus Market system resistant to unauthorized changes, ensuring a high level of safety and confidence in working with data.