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Poseidon is a modern hash function designed specifically for use in zero-knowledge proof systems like zk-Rollups and zk-STARKs.
Unlike older general-purpose hashes (like SHA-2 or SHA-3), Poseidon is built to be extremely efficient inside zk-proofs— which means faster, cheaper, and smaller proofs.
Poseidon is optimized for use inside arithmetic circuits — ideal for zk-STARKs.
It reduces the time and size of zero-knowledge proofs, but still maintains strong cryptographic security.
Based on hash functions, not elliptic curves—safe from quantum attacks.
Poseidon can be customized for different field sizes and applications, giving developers more control.
Traditional hash functions like SHA-256 are slow and processor intensive inside zk-proofs. Poseidon cuts down:
Proof size
Proof generation time
Computation cost
In Xcoin, Poseidon is used as part of its zero-knowledge infrastructure— ensuring that every private transaction is lightweight, fast, and quantum-secure.