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Replace all XRPL/XRP logic, dependencies, and adapters with EVM equivalents. No backward compatibility layer — clean break. ### API changes - Replace `xrpl` package with `viem` for EVM signing and tx submission - New `apps/api/src/evm/client.ts` for operator-signed ETH transfers - Remove `apps/api/src/xrpl/` directory (client, tx-builder, memo, ledger-sync) - Remove `apps/api/src/db/models/escrows.ts` (escrow model) - Rename all `*_drops` fields to `*_wei` in DB models and routes - Rename `ledger_events` → `chain_events`, `ledger_index` → `block_number` - Market auto-opens immediately on creation (no escrow tx required) - Auto-payouts via `signAndSubmitWithOperator` using operator private key - Update config: `EVM_RPC_URL`, `EVM_CHAIN_ID`, `EVM_OPERATOR_ADDRESS/PRIVATE_KEY` - Update default user provider: `"gemwallet"` → `"metamask"` ### Routes - `bets.ts`: amountWei, effectiveAmountWei, plain EVM unsignedTx (no trustSet) - `offers.ts`: ethAmountWei, blockNumber, volumeWei - `resolve.ts`: removed duplicate /resolve endpoint (now in markets.ts), amountWei - `markets.ts`: /resolve handles auto-payouts via viem ### Frontend changes - Replace GemWallet (`@gemwallet/api`) with MetaMask (EIP-1193 `window.ethereum`) - `WalletContext.tsx`: eth_requestAccounts, eth_sendTransaction, eth_chainId - `api.ts`: all types updated (totalPoolWei, amountWei, blockNumber, etc.) - Remove XRP helpers (formatXrp, xrpToDrops); add ETH helpers (formatEth, ethToWei) - Admin page: simplified 1-step market creation (no escrow signing flow) - Bet panel: ETH quick amounts [0.001, 0.01, 0.1, 1], single tx signing step - All components updated: formatEth, metaMaskInstalled, ETH labels - Footer updated: "EVM Parimutuel Prediction Market" ### Docs - README.md, DEMO.md, docs/ADR.md, docs/runbook.md: XRPL → EVM throughout Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Breaking changes
Validation