Arc & Circle
Grants & Hackathons

Arc Microgrants

20 microgrants of $500 USDC each, from a $10,000 pool, for projects already deployed and working on Arc MAINNET: PoC, small apps, demos, hackathon continuations. No company or traction required. Pseudonymous submission allowed.

Circle Developer Grants (2026 Cohort 2)

Milestone-based USDC funding, mentorship, and co-marketing for production-grade apps on Arc and the Circle Developer Platform. Focus areas: onchain lending, capital markets, FX, agentic commerce, payments, treasury management, prediction markets. ~$204K available this cohort. Traction, pilot, or revenue proof prioritized.

Tameion Agents Hackathon

Builder series for AI agents that hold, allocate, and disburse a business's money: treasury, invoices, contractors, autonomous operations, audit trail. Settled on Arc in USDC.

Arc Acceleration Season

6-week accelerator: onboard, build on testnet, ship on mainnet, Demo Day. Primarily for LatAm fintech and AI startups with existing traction, with direct support from the Circle/Arc team. Applications closed Sep 22. Program is actively running.

Arc Bug Bounty Program

HackerOne-hosted, ongoing, no fixed deadline. Rewards: Extreme (unlimited mint, consensus failure) up to $1,000,000; Critical $20K–$200K; High $10K–$20K; Medium/Low lower tiers.

Circle Developer Bounties

Specific integration challenges (USDC, CCTP, Paymaster, Wallets) for USDC rewards. $20,000 total pool, $1,500 per challenge, multiple winners possible. New bounties added on a rolling basis.

Arc Architects Program

Community contribution rewards for hackathons, meetups, content, and beta testing. Points-based system (not token/airdrop) granting ecosystem visibility and special access. Ongoing, rolling.

Circle House @ TOKEN2049 Singapore

In-person Circle House at TOKEN2049 Singapore.

Arc Community Co-working

In-person Arc builder co-working session in London.

Encode London Hackathon & Conference

Hackathon and conference in London.

Arc Demos & Meetup

In-person Arc builder demos and meetup in London.

Pragma Mumbai

In-person conference in Mumbai.

ETHGlobal Mumbai

In-person ETHGlobal hackathon in Mumbai. Arc typically sponsors a $10K–$15K USDC track.