Arc
Circle Internet Group
- Seam
- Base layers
- Status
- Mainnet
- Live since
- 2026
- Verified
- 2026-09-16
Circle's USDC-native L1: permissioned Malachite BFT, Reth execution, dollar gas. Public mainnet 16 September 2026.
Project site ↗Sourced figures
- Time to finality0.5s
Seconds until a committed transaction is economically irreversible.
Arcscan measured 506 ms mainnet block time on 2026-08-10 and reports finality as instant. Circle’s Malachite overview quotes a <350 ms benchmark with 20 validators — that is a benchmark, not this figure.
Source ↗ - Total value locked$308M
Dollar value of assets deposited in the network’s contracts.
DefiLlama v2/chains row name=Arc, chainId=5042, ~$308.3M during the 2026-09-16 session. Day-one public mainnet; re-pull before citing.
Source ↗
The silicon
Malachite BFT + Reth
Circle / Informal Systems / Paradigm (Reth)Consensus is Malachite (Tendermint-family BFT, Informal Systems team joined Circle in 2025). Execution is Reth. No proving ASIC, no DePIN fleet — commodity validator boxes under a permissioned set. The silicon seam is empty on purpose.
Source ↗