Ethstable is a permissioned, Ethereum-compatible blockchain infrastructure designed for enterprises and financial institutions that need secure, high-throughput settlement. Its Proof-of-Authority consensus relies on a consortium of identified, vetted validators, aiming to provide predictable block times, instant deterministic finality, and low, predictable network costs. The platform supports Ethereum-style smart contracts, Solidity, common SDKs, standard wallet libraries, and token standards including ERC-20, ERC-721, ERC-1155, and ERC-4626. These tools can support programmable controls such as participant whitelisting, jurisdiction filters, and delivery-versus-payment settlement.

Ethstable enables sponsors to represent fiat currencies, commodities, and financial instruments as digital tokens, with backing arrangements defined for each asset and potentially maintained off-chain. Its institutional infrastructure includes support for privacy features such as zk-SNARKs and shielded transactions, as well as mandatory hardware security modules for validator signing keys. Use cases described include cross-border payments, corporate treasury management, tokenized deposits, commodity financing, and trade settlement. Ethstable also provides research, governance, and network-explorer resources for its ecosystem.