{"id":128489,"date":"2026-01-20T13:08:34","date_gmt":"2026-01-20T13:08:34","guid":{"rendered":"https:\/\/mycryptomania.com\/?p=128489"},"modified":"2026-01-20T13:08:34","modified_gmt":"2026-01-20T13:08:34","slug":"developing-in-web3-deploying-privacy-first-dapps-with-sapphire-rofl","status":"publish","type":"post","link":"https:\/\/mycryptomania.com\/?p=128489","title":{"rendered":"Developing in Web3: Deploying Privacy-First dApps with Sapphire + ROFL"},"content":{"rendered":"

TL;DR<\/strong><\/p>\n

Sapphire provides confidential EVM smart contracts. OPL lets existing dApps add privacy without migrating chains.ROFL enables verifiable, privacy-preserving off-chain computation.Together, Sapphire + ROFL form a full stack for building private, AI-ready web3 applications.<\/p>\n

The crypto landscape today is flooded with web3 and AI dApps (decentralized applications). You need to choose the right chain and the right tools to develop and deploy your dApp, as it can make all the difference in attracting the right attention from the end-users. The choices are too many, and they often distract more than add value. It is also hard to come by solid, reliable information to make a decision.<\/p>\n

I believe in Oasis as a pioneer of smart privacy for web3 and AI. Let me tell you point by point why I became a believer.<\/p>\n

The Tech Stack: Sapphire\u00a0EVM<\/h3>\n

In the blockchain trilemma scene, privacy has always taken the backseat, as most protocols emphasize decentralization and scalability. And then there is the debate and confusion of how to frame the rising privacy narrative\u200a\u2014\u200ais it privacy coin or privacy blockchain?<\/p>\n

Oasis has emerged as a pioneer in the field of smart privacy. It is a modular L1 blockchain that aims to finally complete the blockchain picture\u200a\u2014\u200adecentralization, scalability, and privacy (and security) together.<\/p>\n

Privacy-preserving techniques have garnered much attention in recent times. Long before zero-knowledge proofs (ZKPs), fully homomorphic encryption (FHE), and secure multiparty computation (sMPC) became trending, Oasis had adopted trusted execution environments ( TEEs<\/a>) for end-to-end encryption and confidential computation.<\/p>\n

In Oasis Sapphire<\/a>, you get the world\u2019s first and only production-ready confidential EVM. Its key features help you build better dApps that are privacy-first.<\/p>\n

EVM compatibilityPrivate storageEncryption precompilesFree view\u00a0callsWeb2 authenticationROFL (runtime off-chain logic)<\/p>\n

So, as a web3 developer, you get to work with smart privacy, cross-chain simplicity, and low technical overhead. How it differs from most other projects also offering privacy solutions is that you get the best of both worlds here\u200a\u2014\u200atransparent when you need it, confidentiality when it matters. Further, you can build with full spectrum of confidentiality customization\u200a\u2014\u200a100% public to 100% private or anywhere in\u00a0between.<\/p>\n

Build with\u00a0docs<\/a>Repository research<\/a>Sapphire 101 video\u00a0tutorial<\/a><\/p>\n

Deployed already? Use the OPL\u00a0hack<\/strong><\/p>\n

But what happens if you have already built your dApp on another EVM chain? It is unfeasible to dismantle everything there and start rebuilding from scratch for the sake of privacy. Acknowledging this dilemma, Oasis offers the services of the Oasis Privacy Layer (\u00a0OPL<\/a>).<\/p>\n

OPL is simple to use\u200a\u2014\u200aa few hundred lines of code, practically a plug-and-play solution. Behind the scenes, it uses a message passing bridge and a gas\u00a0relayer.<\/p>\n

It gives the flexibility to leverage Sapphire\u2019s features and functionalities for your dApp right from your home network, paying transaction fees with your chain\u2019s native token. What you assuredly get from this\u00a0setup:<\/p>\n

Customizable privacyCross-chain convenienceProductive transparencyLow complexityAccess to cryptographic primitives<\/p>\n

Learn more about OPL\u2019s technical advantage and utility here<\/a>, and start building<\/a>.<\/p>\n

The Framework: ROFL<\/h3>\n

Now, Sapphire is the runtime on-chain logic, but computation-heavy dApps, with end-to-end encryption and\/or powered by AI, are a huge challenge. When you add the criteria that the privacy you get and the computations you process should be verifiable and trustless, the feasibility of doing everything on-chain plummets.<\/p>\n

The challenges mount when dealing with cryptoAI, as it has two main problems\u200a\u2014\u200acrypto\u2019s limited application layer and AI\u2019s trust issues. Off-chain computation is a viable answer in this situation. Oasis has thus developed the ROFL<\/a> framework, essentially working like a decentralized TEE cloud with on-chain privacy and verifiability.<\/p>\n

ROFL\u2019s 5-part architecture involves a hardware layer, an application layer, a remote attestation layer, a blockchain layer, and a user interaction layer. Key features\u00a0include:<\/p>\n

Uncapped computational powerTamper-proof processingVerifiable executionDecentralized key management solutionDirect access to confidential virtual\u00a0machines<\/p>\n

The reason ROFL is so crucial and pivotal to the next-gen private and trustless web3 and AI dApps can be simply summed up by what it doesn\u2019t need, which you will definitely appreciate.<\/p>\n

No chain dependencyNo coding language dependencyNo prior TEE experience<\/p>\n

Start exploring the scope of ROFL with these resources:<\/p>\n

Build with templates<\/a>Build with\u00a0CLI<\/a><\/p>\n

Real-World Integrations<\/h3>\n

The applicability of the Sapphire + ROFL solution, with its impact and scope, is limitless. The features and primitives that ROFL unlocks are also significant.<\/p>\n

Already, multiple live collaborations have transpired.<\/p>\n

Zeph<\/strong>\u200a\u2014\u200adeveloping AI companions empowered by DeAI and\u00a0DeCCTamarin<\/strong>\u200a\u2014\u200aempowering secure and private cross-border healthcare data\u00a0analysisTradable<\/strong>\u200a\u2014\u200atrading with privacy-preserving AI\u00a0insightsFlashback<\/strong>\u200a\u2014\u200aprivacy-first AI training that lets users own and monetize their\u00a0dataPlurality<\/strong>\u200a\u2014\u200aconfidential reputation scoring and AI context\u00a0flowTalos<\/strong>\u200a\u2014\u200acombining DAO 2.0 and DeFAI in the form of a new model for on-chain sovereign intelligencezkAGI<\/strong>\u200a\u2014\u200abuilding PawPad, a privacy-preserving platform for trustless trading\u00a0agentsHeurist<\/strong>\u200a\u2014\u200aenabling privacy-first MCP servers for AI\u00a0agentsHuralya<\/strong>\u200a\u2014\u200abuilding private AI wellness assistantsCarrotfunding<\/strong>\u200a\u2014\u200aservicing on-chain prop trading, introducing a new model for parallel verification of the risk and evaluation engine<\/p>\n

Talos<\/a> and Carrotfunding<\/a> here deserve special focus, standing out as pathbreaking case studies redefining DeFi.<\/p>\n

Final words<\/h3>\n

The takeaway from all this is that what Oasis offers to blockchain and web3 developers is not just some concept\u200a\u2014\u200ait\u2019s something real and tangible.
In a space where half-baked or well-intentioned ideas sound promising but often don\u2019t deliver in their execution, a working blueprint for next-gen dApp builders stands\u00a0out.<\/p>\n

So, if you want to deploy your dApp in a web3 universe where privacy, scalability, trustlessness, and AI-ready performance all matter equally, take a moment to explore Oasis\u200a\u2014\u200aand help shape what comes\u00a0next.<\/p>\n

Originally published at <\/em>https:\/\/dev.to<\/em><\/a> on January 20,\u00a02026.<\/em><\/p>\n

Developing in Web3: Deploying Privacy-First dApps with Sapphire + ROFL<\/a> was originally published in Coinmonks<\/a> on Medium, where people are continuing the conversation by highlighting and responding to this story.<\/p>","protected":false},"excerpt":{"rendered":"

TL;DR Sapphire provides confidential EVM smart contracts. OPL lets existing dApps add privacy without migrating chains.ROFL enables verifiable, privacy-preserving off-chain computation.Together, Sapphire + ROFL form a full stack for building private, AI-ready web3 applications. The crypto landscape today is flooded with web3 and AI dApps (decentralized applications). You need to choose the right chain and […]<\/p>\n","protected":false},"author":0,"featured_media":128490,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-128489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-interesting"],"_links":{"self":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts\/128489"}],"collection":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=128489"}],"version-history":[{"count":0,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/posts\/128489\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=\/wp\/v2\/media\/128490"}],"wp:attachment":[{"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=128489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=128489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycryptomania.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=128489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}