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OrdoFi 소개
OrdoFi is an execution-layer service built on Robinhood Chain, an Ethereum Layer 2 based on Arbitrum Nitro with a single sequencer, no public mempool, roughly 100ms block times and chain ID 4663, associated with the Arc ecosystem. OrdoFi provides verifiable ordering and receipts rather than replacing base-layer consensus. Its core is a sealed-bid, second-price backrun auction: users submit transactions through a private JSON-RPC gateway, the sequencer gathers bids within a roughly 200ms closing window, EIP-712 signatures secure order integrity, and results are anchored on-chain as Merkle receipts (OrdoReceiptLog), with about 90% of rebates returned to submitters. The contract is deployed at 0xfe2f…3b167.
Narratively, OrdoFi is positioned as the MEV and execution infrastructure of Robinhood Chain; its private order flow and receipt model aim to reduce front-running risk. After the Robinhood Chain mainnet launched in July 2026, the project was discussed as an on-chain transaction-ordering and verifiable-receipt solution, with its private gateway and backrun auction forming the main technical differentiator.
OrdoFi went live on Robinhood Chain on September 1, 2026 as an execution layer for a Nitro chain that has no public mempool and orders transactions strictly by arrival. A protected JSON-RPC gateway simulates before forwarding and refuses transactions that would revert, so they never pay gas; trades that touch a pool enter a 200-millisecond sealed-bid, second-price backrun auction, with 90% of the clearing price returned as rebates and the rest split between user, originating app and protocol. Rounds are receipted under EIP-712 signatures and anchored onchain for outside checks.