xProof

xProof is a programmable trust primitive that anchors and certifies file outputs—such as documents, code, or AI agent-generated content—on the MultiversX blockchain, providing public, tamper-proof, and verifiable proof of authorship, existence, and agent/output provenance. Built for both human and AI agent workflows, xProof is particularly useful for developers, regulated industries, compliance teams, and any multi-agent workflow requiring audit trails or trustless certification. It offers instant, on-chain certification via web interface, API, and integration with popular AI/agent frameworks such as LangChain, CrewAI, and more.