# OP_NET > Smart contracts on Bitcoin OP_NET is a consensus layer on Bitcoin that enables smart contracts, fungible tokens, and DeFi applications directly on Bitcoin Layer 1 without sidechains or bridges. OP_NET targets developers familiar with TypeScript and Bitcoin users seeking on-chain applications without trust trade-offs. Users can deploy WebAssembly smart contracts, create tokens using the OP_20 standard, mint NFTs via OP_721, and interact with DeFi protocols using BTC as gas. State is derived deterministically from Bitcoin blocks by OP_NET nodes and checkpointed every five blocks via an epoch system, without bridges or protocol forks. - Type: Protocol - Sector: Blockchain Platforms - Status: Active - Founded: 2026-03-19 - Profile: https://thegrid.id/profiles/op_net ## Products - [OP_NET](https://thegrid.id/profiles/op_net): OP_NET is a consensus layer on Bitcoin Layer 1 that enables smart contract deployment and execution without modifying Bitcoin's base protocol. Developers write contracts in AssemblyScript or Rust, compile to WebAssembly, and deploy them via standard Bitcoin Taproot transactions with contract bytecode embedded in witness fields. Contracts execute in a deterministic virtual machine called OP_VM, with state organized into five-block epochs (~50 minutes). Gas fees are paid in BTC with no separate token required. The protocol uses an SHA-1 near-collision mining system for reward distribution and time-delayed attestations to achieve deterministic state finality across nodes. Contract addresses use a P2OP format derived from the deployer's public key, a random salt, and the bytecode hash. (L2, Live, Main Product) - [OP_WALLET](https://thegrid.id/profiles/op_net): OP_WALLET is a self-custodial browser extension wallet for Bitcoin and the OP_NET ecosystem. It supports storage and management of BTC and OP_20 tokens, transaction signing with ML-DSA post-quantum cryptography, and direct interaction with OP_NET smart contracts and dApps. Keys remain on the user's device. A mobile version is listed as forthcoming. (Wallet, Live) - [OPScan](https://thegrid.id/profiles/op_net): OPScan is a block explorer for the OP_NET network. Users can search by address or transaction ID to view transaction types, gas usage, block confirmations, token balances, and smart contract activity for on-chain OP_NET events. (Block Explorer, Live) - [OP_NET Mempool Explorer](https://thegrid.id/profiles/op_net): OP_NET Mempool Explorer is a Bitcoin block and mempool viewer configured for the OP_NET network. It provides block browsing, transaction lookup, and address analysis for Bitcoin transactions processed by OP_NET nodes, with support for multiple locales. (Block Explorer, Live) - [Motoswap](https://thegrid.id/profiles/op_net): Motoswap is a decentralized exchange deployed on the OP_NET Bitcoin Layer 1 network. Users can swap OP_20 tokens and provide liquidity directly on Bitcoin without bridges or wrapped asset mechanisms. (Decentralised Exchange, Live) - [OP_NET AI](https://thegrid.id/profiles/op_net): OP_NET AI is an AI-assisted developer tool for exploring the OP_NET protocol and building Bitcoin applications. It serves as an interactive entry point for developers starting to build on OP_NET. (Developer Tooling, Live) ## Links - [Main](https://opnet.org) - [Documentation](https://docs.opnet.org) - [Whitepaper](https://opnet.org/litepaper/op_net_litepaper_english.pdf) - [Media Kit/branding](https://opnet.org/branding) - [Privacy policy](https://opnet.org/privacy) - [Terms of Service](https://opnet.org/tos) - [Twitter / X](https://x.com/opnetbtc) - [Telegram](https://t.me/opnetbtc) - [Telegram](https://t.me/opnetdev) - [Discord](https://discord.gg/opnet) - [GitHub](https://github.com/btc-vision) ## Legal This data is provided under two licensing models. Model 1 - open data. 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