AI Rig Complex (ARC): Project Update

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Biggest Stories of 2025

• Arc Public Testnet Launch — The Arc public testnet went live, marking a key milestone toward the network's mainnet ambitions. (October 28, 2025) 1
• Circle Explores Arc Network Native Token — Circle revealed in its 2025 Q3 Earnings Report that it is exploring the possibility of launching a native token on the Arc Network. (November 12, 2025) 2
• Arc Litepaper Published — Circle shared the Arc litepaper, detailing a BFT consensus based on Tendermint (Malachite) with an initially permissioned validator set, an EIP-1559-inspired fee market directing fees to an onchain Arc Treasury, and plans for encrypted mempools, confidential transfers, and support for regulated real-world assets. (August 12, 2025) 3
• Circle Introduces Arc L1 — Circle introduced Arc, an EVM-compatible Layer 1 blockchain intended as an enterprise-grade foundation for stablecoin payments, FX, and capital markets applications, using USDC as its native gas token. (August 12, 2025) 4
• AI Rig Complex (ARC): AI Agent Framework in Rust — The AI Rig Complex was introduced as an advanced AI agent framework developed in Rust, featuring a modular architecture, a unified API through the Rig Framework, and support for retrieval-augmented generation (RAG) and multi-agent systems. (January 7, 2025) 5