Top Builders

Explore the top contributors showcasing the highest number of app submissions within our community.

Arc

Arc is a purpose-built, EVM-compatible Layer-1 blockchain advancing the frontier of stablecoin finance and tokenization. It features USDC as native gas, deterministic settlement finality, opt-in privacy, and a stable transaction fee architecture. Optimized for stablecoin-native use cases, such as global payments, FX, and capital markets, Arc serves as a foundational settlement layer for programmable money on the internet.

General
CompanyCircle Internet Group
WebsiteArc Network
Documentationhttps://www.arc.network/litepaper
TypeLayer-1 Blockchain
LaunchPublic Testnet Fall 2025, Mainnet Beta 2026
ConsensusMalachite (Byzantine Fault Tolerant)
CompatibilityEVM-Compatible

Core Architecture

Malachite Consensus Engine

  • High-performance Byzantine Fault Tolerant (BFT) consensus
  • Built on Tendermint algorithm with Rust implementation
  • Sub-second deterministic finality (under 350ms with 20 validators)
  • Performance up to 10,000 TPS with 4 validators
  • No probabilistic confirmations or chain reorganizations

USDC as Native Gas Token

  • Transaction fees paid directly in USDC stablecoin
  • Predictable, dollar-denominated costs for enterprises
  • Eliminates volatile crypto token exposure for gas payments
  • Enhanced EIP-1559 fee mechanism with weighted moving averages
  • Stable transaction fee architecture optimized for business use

EVM Compatibility

  • Full Ethereum Virtual Machine compatibility
  • Seamless migration of existing Ethereum applications
  • Support for existing developer tools and frameworks
  • Native integration with Solidity smart contracts

Key Features

Deterministic Settlement Finality

  • Transactions achieve irreversible finality in under 1 second
  • No risk of chain reorganizations or reversals
  • Guaranteed final settlement for enterprise applications
  • Superior to probabilistic finality models

Built-in FX Engine

  • Institutional-grade Request-for-Quote (RFQ) system
  • 24/7 on-chain foreign exchange and settlement
  • Payment-versus-Payment (PvP) atomic swaps
  • Support for multiple stablecoin pairs (USDC, EURC, etc.)
  • Perpetual futures markets for stablecoin trading

Opt-in Privacy Controls

  • Confidential transfers hiding transaction amounts
  • Addresses remain visible for compliance
  • View keys for selective disclosure to regulators/auditors
  • Trusted Execution Environment (TEE) implementation
  • Future support for MPC, FHE, and Zero-Knowledge proofs

MEV Mitigation

  • Classification of constructive vs. harmful MEV
  • Encrypted mempools to prevent front-running
  • Batch transaction processing
  • Multi-proposer mechanisms for fair ordering
  • Protection against sandwich attacks and value extraction

Enterprise Integration

Circle Platform Integration

  • Native support for Circle Payments Network (CPN)
  • Full integration with USDC, EURC, and USYC tokens
  • Circle Mint, Wallets, and Contracts compatibility
  • Cross-Chain Transfer Protocol (CCTP) support
  • Gateway interoperability service integration

Real-World Asset Tokenization

  • Support for tokenized equities, bonds, and securities
  • Private credit and institutional fund tokenization
  • Partnership with licensed asset issuers and custodians
  • Regulated real-world asset (RWA) framework
  • Compliance-ready tokenization infrastructure

Institutional Validator Network

  • Permissioned Proof-of-Authority consensus initially
  • Hand-selected institutional validators
  • Geographic distribution of validator nodes
  • High compliance and regulatory standards
  • Future transition to broader validator participation

Use Cases

Global Payments & Remittances

  • Cross-border payments with instant settlement
  • Reduced intermediary costs and complexity
  • 24/7 operation independent of banking hours
  • Multi-currency stablecoin support

Capital Markets & Trading

  • Institutional trading settlement
  • Tokenized securities and derivatives
  • Automated delivery-versus-payment (DvP)
  • Real-time collateral management

Foreign Exchange

  • On-chain FX trading and settlement
  • Stablecoin pair perpetual futures
  • Institutional-grade price discovery
  • Automated currency conversion

Treasury Management

  • AI-powered treasury optimization
  • Yield-bearing stablecoin integration (USYC)
  • Programmable finance workflows
  • Automated compliance reporting

Technical Specifications

  • Throughput: 3,000-10,000 TPS depending on validator count
  • Finality: Sub-second (100-350ms) deterministic settlement
  • Consensus: Malachite BFT based on Tendermint
  • Virtual Machine: Ethereum Virtual Machine (EVM) compatible
  • Gas Token: USDC native gas payments
  • Privacy: Opt-in confidential transfers with compliance features
  • Interoperability: Cross-chain bridges and CCTP integration

Development Timeline

  • Private Testnet: August 2025 (launched)
  • Public Testnet: Fall 2025
  • Mainnet Beta: 2026
  • Full Production: TBD with community and regulatory readiness

Arc represents Circle's vision for a stablecoin-native financial infrastructure that bridges traditional finance with programmable blockchain technology, designed specifically for enterprise adoption and regulatory compliance.

Arc AI technology page Hackathon projects

Discover innovative solutions crafted with Arc AI technology page, developed by our community members during our engaging hackathons.

RoboDk based Quantum state simulator

RoboDk based Quantum state simulator

The Quantum‑Enhanced Robotics Simulator (QERS) is a fully‑functional digital testbed for designing, testing and validating robotic systems without physical hardware. Our goal is to narrow the reality gap between simulation and the real world by combining deterministic macro‑physics from engines like PyBullet with a quantum‑stochastic plugin that injects realistic noise via Qiskit. The simulator supports deterministic, stochastic and quantum‑perturbed stepping modes and exposes a FastAPI REST API for running jobs, retrieving metrics and managing assets. A Celery/Redis job system queues and executes simulation runs asynchronously, while the Next.js/Three.js web application provides a real‑time dashboard with a 3D viewport, scene tree, metrics panel and controls to toggle between classical domain randomization and quantum noise. Reality profiles define configurable dynamics, sensor and actuation parameters, enabling multi‑profile evaluation of policies. QERS computes gap metrics such as G<sub>dyn</sub>, G<sub>perc</sub> and G<sub>perf</sub> and includes scripts for benchmarking across profiles and generating reports. Users can import URDFs, run batch simulations and compute performance drops and rank stability. Future phases will add mesh segmentation, an AI‑driven text‑to‑algorithm pipeline for generating planner and controller skeletons, and neural‑augmented simulation informed by real data. By combining quantum computing, domain randomization, residual learning and modern web technologies, QERS demonstrates a practical path to sim‑to‑real transfer and a production‑minded robotics startup.

Make it agentic MIA

Make it agentic MIA

A mobile web app no-code AI agent platform that automates the full sales lifecycle for medium-sized businesses—from customer conversation to USDC payment settlement—without requiring engineering resources or infrastructure management. Business owners can deploy an AI sales agent in under two minutes using a visual builder. The agent can handle customer inquiries, qualify leads, negotiate offers, and complete transactions inside any messaging channel (such as chat-based commerce environments). This allows non-technical teams to launch AI-driven sales workflows with production-grade reliability. Payments are powered entirely by USDC on Circle’s ARC blockchain testnet, with gas fees sponsored in USDC to ensure predictable costs. Using Circle’s SDK, the platform programmatically creates and manages wallets for both businesses and customers, abstracting blockchain complexity while preserving on-chain transparency. This enables seamless, global, stablecoin-native transactions without relying on traditional payment rails. From a technical standpoint, the MVP demonstrates how complex AI agent logic, wallet orchestration, and payment flows can be composed into a single, user-friendly system. For developers, it provides a concrete example of AI + stablecoin commerce in a production-like environment. For businesses, it compresses weeks of integration work into minutes. This MVP is a strong hackathon submission because it delivers a working, technically sound prototype that connects AI agents, USDC payments, Circle ARC infrastructure, and no-code deployment into a credible, real-world commerce use case.

HumanGrid AI- The Error-Handling Layer for Agents

HumanGrid AI- The Error-Handling Layer for Agents

We are entering the era of Autonomous AI Agents, yet even the most advanced models (like Gemini or GPT-4) suffer from the "Last Mile Reliability Problem." When an agent encounters ambiguous data, sarcasm, or high-stakes verification tasks, it often hallucinates or crashes. There is currently no standard API for an AI to programmatically ask a human for help. HumanGrid AI is the error-handling layer for the autonomous economy. We have built a decentralized marketplace where AI agents can offload confusing tasks to a global grid of human workers in milliseconds. How It Works: The Trigger: An AI Agent (powered by Google Gemini) detects low confidence in a task. The Handoff: The agent calls the HumanGrid API, posting the task with a bounty. The Work: A human verifies the data via our real-time dashboard. The Agentic Payment: Using Circle Developer-Controlled Wallets, the agent autonomously pays the worker in USDC on the Arc Network. Why This Matters: By leveraging Arc’s sub-second finality and Circle’s programmable wallets, we transform AI verification from a slow, manual process into a high-speed, agentic transaction. This creates a symbiotic economy where agents act as employers and humans provide the intuition that code lacks. Tech Stack: AI: Google Gemini Flash 1.5 (Function Calling) Settlement: Arc Testnet (Native USDC Gas) Payments: Circle Programmable Wallets (Agent Treasury) Backend: Rust (Axum) for high-performance verification Frontend: Next.js with Real-time Supabase integration