RISCy Docs

What is RISCy?

RISCy is a low-fee, Turing-complete UTXO network for Bitcoin builders, designed for instant finality and high-throughput applications. Built on a Nexa-derived architecture, it pairs the UTXO model with a general-purpose RISC-V virtual machine, so you can write smart contracts in Rust, C, Zig — or anything that compiles to RISC-V.

Under the hood, the RISCy Network is secured by Bitcoin miners via Drivechain (BIP-300/301) and builds on a fork of the Nexa protocol (a Nexa v2.0 derivative). See Architecture for the full stack.

Why RISCy?

• Real programmability — a RISC-V VM, not a constrained scripting language or EVM-compatibility layer.
• UTXO parallelism — the Nexa-derived UTXO model enables parallel transaction validation with no global-state bottleneck.
• Instant finality — eCash-style pre-consensus settles transactions in seconds. See Instant Finality.
• Fast, cheap settlement — inherits Nexa’s near-instant confirmations and sub-cent fees.
• Bitcoin-anchored security — Drivechain (BIP-300/301) hashrate escrow.
• Builder-aligned economics — up to 70% of the fees a contract generates can be paid back to its builder.

Start here

• Getting Started — what RISCy is and how it relates to Nexa.
• Architecture — the UTXO + RISC-V VM + pre-consensus + Drivechain stack.
• Instant Finality — pre-consensus explained.
• Smart Contracts — write and deploy on the RISC-V VM.
• Running a Node — network parameters and participation.

Documentation is under active development. Sections will expand over time.