A Transaction Gatekeeper is an entity or mechanism that controls or filters which transactions are allowed to proceed within a financial or blockchain system. In centralized systems, this role is often performed by banks or payment processors; in decentralized contexts, it could involve smart contracts or specific protocol rules. These gatekeepers enforce compliance, security policies, or network parameters, preventing unauthorized or malicious activities. They serve as a point of control within a transaction flow.
Context
Transaction Gatekeepers are frequently discussed in news concerning regulatory oversight, censorship resistance, and network security within both traditional finance and digital asset ecosystems. Debates often arise regarding the balance between maintaining network openness and implementing necessary controls to prevent illicit activities. The role of such gatekeepers is particularly scrutinized in decentralized systems, where their presence can challenge the core principles of permissionless access. Their function is critical for maintaining order and security.
The Proof of Inference Model (PoIm) enables cost-effective, on-chain machine learning inference to function as a real-time transaction firewall, mitigating billions in DeFi exploits.
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