According to @provenauthority in a November 21, 2025 X post, accountability in digital systems requires identity, and scaling Human-to-Agent and Agent-to-Agent transactions as well as stablecoins used as machine money is impossible without robust Agent Identity (source: @provenauthority, X, Nov 21, 2025). According to @provenauthority, zero-knowledge proofs are presented as the key to enable privacy-preserving Agent Identity, positioning ZK stacks as foundational infrastructure for stablecoin settlement in AI agent workflows and machine-to-machine payments (source: @provenauthority, X, Nov 21, 2025). According to @provenauthority, this frames a trading thesis that identity and ZK middleware could become critical bottlenecks for stablecoin throughput and adoption in AI-driven payments, directing attention to identity rails and ZK verification cost dynamics as potential value drivers within crypto market infrastructure (source: @provenauthority, X, Nov 21, 2025). According to @provenauthority, no empirical data, token mentions, or timelines are provided in the post, so these points should be treated as the author’s stated thesis rather than quantified guidance (source: @provenauthority, X, Nov 21, 2025).