👉 Authentication: The `authentication:fumes` feature is a method used in blockchain and cryptocurrency systems, particularly in proof-of-fumes (PoF) consensus mechanisms, to verify the authenticity of transactions or blocks by leveraging environmental data, such as energy consumption. When a node (validator) uses PoF, it requires a certain amount of energy to generate proof, which can be measured through the fumes produced by the energy-intensive process. This ensures that only nodes with significant energy resources can participate, making the network more secure and resistant to attacks. The `authentication:fumes` mechanism acts as a practical and sustainable alternative to traditional proof-of-work (PoW) systems, reducing environmental impact while maintaining security and integrity.