arc-attribution-kit (github.com/OoJae/arc-attribution-kit, MIT, demo at arc-attribution-kit.vercel.app) exposes AttributionEscrow.sol — configurable platform-fee bps, per-subject creator mapping, operator-credited multi-creator splits (e.g. 80/20), and on-demand creator withdrawals — for multi-recipient post-checkout attribution. It ships viem read/write helpers, Foundry-free solc compile/deploy scripts, a CCTP v2 sweep generator minting USDC from Polygon Amoy into the escrow, Modular Wallets passkey enrollment, Paymaster v0.8 gas sponsorship on the claim userOp, and a minimal Next.js demo dapp with /admin and /dashboard routes. Babel Markets, its first user, is a multilingual agent (Claude Sonnet via the Vercel AI SDK) that translates non-English news into Polymarket questions with on-chain builder-fee attribution on Arc.
Building arc
1 (Solo) — OoJae