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Arc follows a phased deployment model, progressively expanding network access and decentralization. The Public Testnet is the current active network, and developer access is permissionless at every phase: you can deploy contracts and send transactions without approval.

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Deployment phases

For connection details, see RPC endpoints. To explore testnet activity, visit testnet.arcscan.app.

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Testnet performance

The Public Testnet has demonstrated production-grade performance since launch. The following metrics are from the Q1 2026 monthly review.

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Validator model at launch

Arc launches with a permissioned Proof-of-Authority (PoA) validator set — a consensus model in which a fixed group of known, vetted institutions produce and validate blocks, rather than anonymous participants staking tokens. Approximately 20 SOC 2-certified validators operate across multiple global regions, each bound by uptime SLAs and compliance obligations. Block production rotates among validators to ensure fairness and liveness. For full details on the validator set, see Consensus layer.

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Future evolution

Arc may transition from Proof-of-Authority to a permissioned Proof-of-Stake (PoS) model — a consensus mechanism where validators lock tokens as collateral rather than relying solely on institutional selection. This broadens validator participation while maintaining the compliance requirements and institutional accountability that define the network. See the consensus layer roadmap for details.