Programmable Money Hackathon submission. StreetRail: street dance merch + on-chain move rights on Circle's Arc Testnet, paid in USDC, EURC or cirBTC. Demos four payment modes — H2H, H2A, A2A, A2H — with x402 nanopayment batching.
Registrai (Arc ecosystem data, builder.registrai.cc). Permissionless bonded oracle agents + verifiable rule-bytecode aggregation. Fork-and-ship infrastructure for any Arc app.
A USDC settlement rail for Circle Arc that cannot settle past its proven reserves. Prove-then-settle, EIP-712 reserve attestation, Arc testnet only.
Library that supports confidentiality analysis of Solidity contracts on Circle's opt-in confidential execution environment.
On-chain rent escrow that holds USDC while a NYC HPD housing violation is open, then settles based on the resolution. ETHGlobal NY 2026.
Open data on the Arc ecosystem: projects with status and sources, daily app activity, Arc chain figures. CC BY 4.0. By Registrai (registrai.cc).
USDC/USDT tips and unlocks for Ren'Py games, paid straight to your wallet. No server, no tokens, no NFTs. Ethereum, Arbitrum, Polygon, Base, Arc, Solana.
Arcodian — stablecoin-native launchpad, wallet, swap/bridge, and agent pay on Circle Arc
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