Questions, answered plainly.

Satsuma is a sovereign Layer-1 blockchain built to host on-chain protocols for AI agents. It is fully Ethereum-compatible — Solidity contracts deploy unmodified — with blocks every 2 seconds that become irreversible within seconds. Reads are open to anyone; writes are permissioned inside the protocol itself.

Yes. Satsuma runs Solidity with full EVM semantics and exposes standard Ethereum JSON-RPC. MetaMask connects as a custom network, and Hardhat and Foundry deploy and test against Satsuma exactly as they would against any Ethereum endpoint. The EIP-155 chain ID is 555555555.

Only accounts on an on-chain allowlist can send transactions or deploy contracts. Admission is enforced inside transaction validation — a transaction from a non-admitted account is invalid by consensus rules and never enters the mempool. The allowlist is managed by Satsuma Labs, and every membership change is a public, auditable on-chain operation.

Yes. Anything that does not modify state is unrestricted: state queries, contract view calls, simulation, gas estimation, and event queries are open to anyone, from anywhere, without registration or an API key. The public RPC endpoint is https://rpc.satsuma.one/eth, and the explorer at explorer.satsuma.one streams the chain live.

Blocks are produced every 2 seconds on a fixed cadence, and a Byzantine-fault-tolerant finality protocol makes them irreversible within roughly three blocks — about 6 seconds, measured under saturating load. Finality is deterministic: a finalized block can never be reorganized away.

SUMA is the native token of the Satsuma network — 18 decimals, used for gas and settlement. It is a network resource, not a speculative instrument: there is no public sale and no yield program.

Fees are metered, not auctioned. Each transaction pays in proportion to the resources it consumes, and a smooth dynamic multiplier targets 25% average block utilization — fees rise gradually under sustained load and decay back when it falls. There are no gas auctions and no sudden spikes driven by someone else’s activity.

The conditions for it are removed by design. Every account that can write is known and admitted deliberately, so there is no anonymous public mempool of adversaries observing transaction intent. Non-admitted transactions are rejected before they ever propagate.

Satsuma Labs operates the validator set, manages the allowlist, and holds the network’s root authority. Using Satsuma means trusting Satsuma Labs to operate honestly and competently — with the critical difference that every administrative action lands on a publicly readable ledger. The operator cannot forge transactions from accounts it does not control, cannot act invisibly, and cannot rewrite finalized history undetected.

Public L1s and L2s offer open participation but bring volatile fees, probabilistic or slow finality, and open mempools. Enterprise chains gate access at the network perimeter and are typically opaque to outsiders. Satsuma enforces write admission inside the protocol while keeping every byte of state publicly readable — permissioned where it counts, transparent everywhere else.

Add Satsuma as a custom network: RPC URL https://rpc.satsuma.one/eth, chain ID 555555555, currency symbol SUMA. Reading works immediately for anyone. Writing requires allowlist admission from Satsuma Labs.