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feat: blockchain reorganization detection for transaction confirmations (#514) #537

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13 changes: 8 additions & 5 deletions backend/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -89,16 +89,19 @@
"@types/validator": "^13.11.6",
"@types/web-push": "^3.6.4",
"@types/ws": "^8.5.12",
"autocannon": "^7.15.0",
"eslint": "^9.0.0",
"openapi-fetch": "^0.13.5",
"openapi-typescript": "^7.4.4",
"pino-pretty": "^13.0.0",
"prisma": "^5.22.0",
"ts-morph": "^24.0.0",
"tsx": "^4.19.0",
"typescript": "^5.6.0",
"typescript-eslint": "^8.0.0",
"vitest": "^4.1.1",
"autocannon": "^7.15.0",
"openapi-fetch": "^0.13.5",
"openapi-typescript": "^7.4.4",
"pino-pretty": "^13.0.0"
"vitest": "^4.1.1"
},
"optionalDependencies": {
"@rollup/rollup-linux-x64-gnu": "^4.62.2"
}
}
67 changes: 67 additions & 0 deletions backend/prisma/schema.prisma
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Expand Up @@ -27,6 +27,21 @@ enum PaymentStatus {
failed
cancelled
refunded
pending_review
}

enum ReorgEventStatus {
detected
investigating
resolved
false_positive
}

enum TransactionReorgStatus {
pending_review
re_verified
confirmed
rolled_back
}

enum PaymentType {
Expand Down Expand Up @@ -119,6 +134,7 @@ model Payment {
user User? @relation(fields: [userId], references: [id])
project Project? @relation(fields: [projectId], references: [id])
milestone Milestone? @relation(fields: [milestoneId], references: [id])
transactionReorgs TransactionReorg[]

@@index([tenantId, createdAt])
@@index([status], map: "payments_active_status_idx")
Expand Down Expand Up @@ -648,3 +664,54 @@ model ApiVersionEndpoint {
@@map("api_version_endpoints")
}

// ─── Chain Reorganization Models ─────────────────────────────────────────────

model ReorgEvent {
id String @id @default(uuid())
network String
detectedAt DateTime @default(now()) @map("detected_at")
reorgDepth Int @map("reorg_depth")
safetyThreshold Int @map("safety_threshold")
canonicalBlockHash String @map("canonical_block_hash")
orphanedBlockHash String @map("orphaned_block_hash")
fromBlockNumber Int @map("from_block_number")
toBlockNumber Int @map("to_block_number")
status ReorgEventStatus @default(detected)
resolvedAt DateTime? @map("resolved_at")
metadata Json?
createdAt DateTime @default(now()) @map("created_at")
updatedAt DateTime @updatedAt @map("updated_at")

affectedTransactions TransactionReorg[]

@@index([network, detectedAt])
@@index([status])
@@index([reorgDepth])
@@map("reorg_events")
}

model TransactionReorg {
id String @id @default(uuid())
reorgEventId String @map("reorg_event_id")
txHash String @map("tx_hash")
paymentId String? @map("payment_id")
network String
status TransactionReorgStatus @default(pending_review)
originalBlock Int? @map("original_block")
reorgDetails Json? @map("reorg_details")
reVerifiedAt DateTime? @map("re_verified_at")
resolvedAt DateTime? @map("resolved_at")
createdAt DateTime @default(now()) @map("created_at")
updatedAt DateTime @updatedAt @map("updated_at")

reorgEvent ReorgEvent @relation(fields: [reorgEventId], references: [id])
payment Payment? @relation(fields: [paymentId], references: [id])

@@index([reorgEventId])
@@index([txHash])
@@index([paymentId])
@@index([status])
@@index([network, createdAt])
@@map("transaction_reorgs")
}

23 changes: 23 additions & 0 deletions backend/src/index.ts
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Expand Up @@ -108,6 +108,8 @@ import { coldStartMonitorRouter } from './routes/cold-start-monitor.js';
import { rateLimitAnalyticsRouter } from './routes/rate-limit-analytics.js';
import { startScheduledRotation, stopScheduledRotation } from './config/credential-rotation.js';
import devDevRouter from './routes/dev/reload.js';
import { reorgRouter } from './routes/reorg.js';
import { getReorgDetector } from './services/chain/reorg-detector.js';

// Validate environment variables at startup
validateEnv();
Expand Down Expand Up @@ -268,6 +270,7 @@ apiV1Router.use('/escrow', escrowRouter);
apiV1Router.use('/disputes', disputesRouter);
apiV1Router.use('/withdrawals', withdrawalsRouter);
apiV1Router.use('/swap', swapSimulationRouter);
apiV1Router.use('/chain/reorgs', reorgRouter);
apiV1Router.get('/compression/metrics', (_req, res) => {
res.json(getCompressionMetrics());
});
Expand Down Expand Up @@ -456,6 +459,19 @@ server.listen(config.server.port, () => {
// Webhook worker
startWebhookWorker();

// Chain reorganization detector (Issue #514)
if (
process.env.ETHEREUM_RPC_URL ||
process.env.POLYGON_RPC_URL ||
process.env.STELLAR_RPC_URL
) {
getReorgDetector().start().then(() => {
console.log('[ReorgDetector] Chain reorg monitoring started');
}).catch((err: Error) => {
console.error('[ReorgDetector] Startup error:', err.message);
});
}

// Auto-escalation cron
setInterval(async () => {
const count = await disputeService.processEscalations();
Expand Down Expand Up @@ -525,6 +541,13 @@ const shutdown = (signal: string) => {
console.error('Error stopping batch processor:', err);
}

try {
getReorgDetector().stop();
console.log('Reorg detector stopped.');
} catch (err) {
console.error('Error stopping reorg detector:', err);
}

clearInterval(analyticsInterval);

try {
Expand Down
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