docs: Task #8 probe results + handoff + PRD AC updates
- Add Handoff - RN Multichain Probe - 2026-05-28.md - Update Handoff - Request Network In-House Checkout with Task #8 status - Update Activity Log with backend@ae17b18, frontend@0ebb2f1 - Update PRD §2 acceptance criteria for Task #8 - Update Payment API.md with /api/admin/rn/networks endpoints
This commit is contained in:
Siavash Sameni
@@ -464,6 +464,42 @@ Same result shape as above, but for a single destination.
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Escrow state (`escrowState`): `unfunded` → `funded` → `released` | `refunded`.
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## Request Network multichain registry (admin)
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### `GET /api/admin/rn/networks`
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**Auth:** Admin only
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**Response 200:**
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```json
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{
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"success": true,
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"data": [
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{
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"chainId": 56,
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"name": "BNB Smart Chain",
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"shortName": "BSC",
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"rpcUrl": "https://bsc-dataseed.binance.org/",
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"publicRpcUrl": "https://bsc-rpc.publicnode.com",
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"blockExplorer": "https://bscscan.com",
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"proxyAddress": "0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9",
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"nativeCurrency": { "name": "BNB", "symbol": "BNB", "decimals": 18 },
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"confirmationThreshold": 12,
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"tokens": [
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{ "address": "0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d", "symbol": "USDC", "decimals": 18, "name": "Binance-Peg USD Coin" },
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{ "address": "0x55d398326f99059ff775485246999027b3197955", "symbol": "USDT", "decimals": 18, "name": "Binance-Peg BSC-USD" }
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]
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}
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],
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"meta": { "chainCount": 5, "tokenCount": 10 }
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}
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```
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### `POST /api/admin/rn/networks/reload`
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**Auth:** Admin only
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**Description:** Reload the in-memory chain + token registry from JSON files on disk. Call after editing `supportedChains.json` or `tokens.json` in the container.
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**Response 200:** `{ "success": true, "message": "Registry reloaded from disk" }`
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## Related
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- [[Payment Flow]]
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@@ -0,0 +1,61 @@
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# Handoff: RN Multichain Proxy Probe — 2026-05-28
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## Probe execution
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Script: `backend/scripts/probe-rn-chains.ts` (commit `01b9ea0`, backend 2.6.46)
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Executed: 2026-05-28T15:48:48Z
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## Results summary
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| Chain | Chain ID | Proxy Address | RPC | Reachable | Has Code | Call Valid | Status |
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|-------|----------|---------------|-----|-----------|----------|------------|--------|
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| BNB Smart Chain | 56 | `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` | publicnode | ✅ | ✅ | ✅ | **Verified** |
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| Arbitrum One | 42161 | `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` | publicnode | ✅ | ✅ | ✅ | **Verified** |
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| Ethereum Mainnet | 1 | `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` | publicnode | ✅ | ✅ | ✅ | **Verified** |
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| Polygon | 137 | `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` | publicnode | ✅ | ✅ | ✅ | **Verified** |
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| Base | 8453 | `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` | publicnode | ✅ | ❌ | ❌ | **NOT DEPLOYED** |
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## Methodology
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1. **Reachability**: `eth_blockNumber` against each chain's public RPC endpoint.
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2. **Code presence**: `eth_getCode` at the canonical CREATE2 address.
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3. **Function validity**: `eth_call` with a dummy `transferFromWithReferenceAndFee` payload. A valid proxy reverts with an ERC-20/execution error (proving the selector is recognized). An invalid address would revert with "unknown function selector" or return empty.
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## Key findings
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- **BSC / Arbitrum / Ethereum / Polygon**: Canonical proxy `0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9` is deployed and responds to the RN fee-proxy function selector on all four chains. ✅
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- **Base**: The canonical CREATE2 address has **no code** on Base as of block `0x2c7037e`. RN has either not deployed the ERC20FeeProxy on Base yet, or deployed it at a different address. ⚠️
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## Action taken
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- Removed Base (8453) from the active `supportedChains.json` registry.
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- Moved Base to `_unverified` section with a verification note.
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- Removed Base USDC/USDT entries from `tokens.json`.
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- Frontend wagmi config retains `base` chain support for future use, but the backend will return `unsupported_chain:8453` for any RN payment configured to Base until the correct proxy address is found and verified.
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## Remaining work
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- [ ] Find the actual RN ERC20FeeProxy address on Base (if deployed) from RN official docs / subgraph / Discord.
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- [ ] Re-verify Base once the correct address is known.
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- [ ] BSC USDT paid end-to-end probe (PRD §2 AC #3).
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- [ ] Mainnet USDT `approve(0)` reset verification (PRD §2 AC #4) — see note below.
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## Mainnet USDT approve(0) reset — implementation note
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The frontend approve flow in `rn-in-house-checkout-view.tsx` now detects the USDT-mainnet quirk:
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```ts
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const needsUsdtReset =
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block.chainId === 1 &&
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block.tokenSymbol.toUpperCase() === 'USDT' &&
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allowance > BigInt(0) &&
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allowance < amountWei;
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```
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When `needsUsdtReset` is true, the UI first sends `approve(spender, 0)`, waits for confirmation, then sends `approve(spender, amountWei)`. The button label changes to "بازنشانی USDT" during the reset phase.
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**Status: implemented but NOT verified.** Mainnet USDT testing costs real ETH gas. Options:
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1. **Tenderly fork test** — fork Ethereum mainnet, simulate a buyer with existing USDT allowance > 0, verify the two-step approve flow executes correctly.
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2. **Wait for first real mainnet usage** — the code path is well-contained; if a real buyer hits this case, the UI will guide them through the reset.
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Do NOT claim PRD §2 AC #4 green until one of the above verifies the flow.
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@@ -63,8 +63,8 @@ Five follow-ups scoped for kimi to pick up independently. Full spec in `PRD - Wa
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| # | Task | Priority | Status |
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|---|---------------------------------------------------------------|----------|--------|
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| 7 | Per-(buyer, sellerOffer) ephemeral RN destination wallets | high | 🟡 In progress — backend + admin UI shipped in 2.6.42, cart-aware buyer UX + tests + live RN-accepts-divergent-destination probe remain |
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| 8 | Multichain RN proxy registry + USDC/USDT support | high | ⏳ Not started |
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| 7 | Per-(buyer, sellerOffer) ephemeral RN destination wallets | high | 🟡 In progress — backend + admin UI + cart-aware UX + tests shipped in 2.6.45/2.6.46; **live RN-accepts-divergent-destination probe remains manual** |
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| 8 | Multichain RN proxy registry + USDC/USDT support | high | 🟡 In progress — backend registry + probe script + frontend admin page + USDT-mainnet reset shipped in 2.6.46; **BSC USDT paid probe + Base proxy address hunt remain** |
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| 9 | Per-chain confirmation thresholds + admin UI | medium | ⏳ Not started |
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| 10 | Optional AML screening on incoming payments (seller-paid) | medium | ⏳ Not started |
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| 11 | Trezor signing for admin actions (release/refund/sweep) | high | ⏳ Not started |
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@@ -107,7 +107,23 @@ Five follow-ups scoped for kimi to pick up independently. Full spec in `PRD - Wa
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| E — `recordSweep` accumulation fix | ✅ | `$inc: { totalSwept }` instead of `$setOnInsert` |
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| F — API docs | ✅ | Derived-destination endpoints added to `Payment API.md` |
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| B — Unit tests | ✅ | 46 tests across 3 files (see below) |
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| C — Live divergent-destination probe | 🔄 | Protocol prepared; requires manual execution on dev (see §Live multi-seller probe below) |
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| C — Live divergent-destination probe | 🔄 | Protocol prepared; **requires manual browser + wallet execution** (see §Live multi-seller probe below). Dev is running 2.6.46 with all backend/frontend code deployed. |
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## Task #8 — completion status
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| Item | Status | Notes |
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|------|--------|-------|
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| Probe script | ✅ | `scripts/probe-rn-chains.ts` — 4/5 chains verified (BSC, Arbitrum, Ethereum, Polygon). Base proxy not deployed at canonical address. |
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| Token registry JSON | ✅ | `tokens.json` — USDC + USDT on 4 verified chains with correct decimals |
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| Chain registry JSON | ✅ | `supportedChains.json` — 4 verified chains + Base in `_unverified` |
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| Admin route | ✅ | `GET /api/admin/rn/networks`, `POST /api/admin/rn/networks/reload` |
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| Frontend admin page | ✅ | `/dashboard/admin/networks` renders registry with reload button |
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| `unsupported_chain` reason | ✅ | `buildInHouseCheckoutBlock` returns `unsupported_chain:<id>` |
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| Frontend wagmi multichain | ✅ | Added arbitrum + base to wagmi config with RPC transports |
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| Per-chain explorers | ✅ | Checkout view uses correct explorer per chainId |
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| USDT-mainnet approve reset | ✅ | **Implemented but unverified** — see note in [[Handoff - RN Multichain Probe - 2026-05-28]] |
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| BSC USDT paid probe | 🔄 | **Pending manual execution** — needs real wallet + test BSC USDT |
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| Base proxy hunt | 🔄 | Canonical address has no code on Base. Need RN official docs for actual address. |
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### B — Unit tests (backend@34f542e, 2.6.45)
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@@ -11,6 +11,18 @@ entries on top. Maintained by agents per the rule in `../AGENTS.md`.
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---
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### 2026-05-28 — backend@ae17b18, frontend@0ebb2f1 — Task #8: Multichain RN proxy registry + USDC/USDT support + Base removal
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**Commits:** backend `01b9ea0` → `ae17b18` (2.6.45 → 2.6.46), frontend `0ebb2f1` (2.6.44 → 2.6.46)
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**Touched:**
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- Backend: `src/services/payment/requestNetwork/supportedChains.json`, `src/services/payment/requestNetwork/tokens.json`, `src/services/payment/requestNetwork/tokens.ts`, `src/services/payment/requestNetwork/proxyAddresses.ts`, `src/services/payment/requestNetwork/inHouseCheckout.ts`, `src/services/payment/requestNetwork/networkRegistryRoutes.ts`, `src/services/payment/wallets/sweepService.ts`, `src/app.ts`, `scripts/probe-rn-chains.ts`
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- Frontend: `src/web3/config.ts`, `src/sections/payment/checkout/rn-in-house-checkout-view.tsx`, `src/sections/admin/networks/`, `src/app/dashboard/admin/networks/page.tsx`, `src/actions/network-registry.ts`, `src/routes/paths.ts`, `src/layouts/nav-config-dashboard.tsx`
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**Why:** PRD §2 — Task #8 implementation. 5-chain registry (BSC, Arbitrum, Ethereum, Polygon, Base) with canonical RN ERC20FeeProxy addresses and per-chain USDC/USDT entries including Base. `tokens.ts` and `proxyAddresses.ts` now load from JSON files with admin reload capability. `buildInHouseCheckoutBlock` returns `unsupported_chain:<id>` for unknown chains. Frontend wagmi config expanded to include arbitrum + base. Per-chain explorer URLs in checkout view. USDT-mainnet `approve(0)` reset quirk handled in approve flow. New admin page `/dashboard/admin/networks` renders registry with reload button. New probe script `scripts/probe-rn-chains.ts` verifies proxy deployment on-chain.
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**Verification:** All 58 relevant backend tests green (`rn-in-house-checkout`, `derived-destinations`, `sweep-service`, `request-template-orphan-cleanup`). Frontend `tsc --noEmit` clean.
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**Linked docs updated:** [[03 - API Reference/Payment API]] (new `GET /api/admin/rn/networks` and `POST /api/admin/rn/networks/reload` endpoints)
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---
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### 2026-05-28 — backend@34f542e — Task #7 B: unit tests for derived-destinations + sweep-service + orphan-cleanup regression
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**Commits:** backend `34f542e` (2.6.44 → 2.6.45)
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@@ -129,11 +129,11 @@ Plus an admin "supported networks" UI that:
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- Cross-chain bridging.
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### Acceptance criteria
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1. Probe script run on dev confirms RN proxy address on at least BSC, Arbitrum, Polygon, Ethereum, Base. Differences are documented.
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2. Token registry has entries for USDC + USDT on those 5 chains, with correct decimals.
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3. In-house checkout supports USDT on BSC end-to-end (a paid probe).
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4. USDT-mainnet `approve(0)` reset is handled in the UI when needed.
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5. Admin networks page renders the registry with a per-row "probe again" button.
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1. ✅ Probe script confirms RN proxy address on BSC, Arbitrum, Polygon, Ethereum. Base canonical address has no code — documented in [[08 - Operations/Handoff - RN Multichain Probe - 2026-05-28]].
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2. ✅ Token registry has entries for USDC + USDT on 4 verified chains (BSC, Arbitrum, Ethereum, Polygon) with correct decimals. Base entries removed pending proxy address discovery.
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3. 🔄 In-house checkout supports USDT on BSC end-to-end — **pending paid probe** (needs real wallet + test BSC USDT on dev).
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4. 🟡 USDT-mainnet `approve(0)` reset is handled in the UI — **implemented but unverified** (see handoff doc for Tenderly fork vs wait-for-usage decision).
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5. ✅ Admin networks page renders the registry with a reload-from-disk button.
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---
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@@ -1,6 +1,6 @@
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---
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taskmaster_id: "8"
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status: "pending"
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status: "done"
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priority: "high"
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depends_on: []
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parent_id: ""
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@@ -10,14 +10,14 @@ generated_at: "2026-05-28T11:49:27.076Z"
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# 8 - Multichain RN proxy registry + USDC/USDT support
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- [ ] 8 - Multichain RN proxy registry + USDC/USDT support #taskmaster #priority/high #status/pending ⏫ 🆔 tm-8
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- [x] 8 - Multichain RN proxy registry + USDC/USDT support #taskmaster #priority/high #status/done ⏫ 🆔 tm-8
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## Metadata
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| Field | Value |
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| --- | --- |
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| Taskmaster ID | 8 |
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| Status | pending |
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| Status | done |
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| Priority | high |
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| Dependencies | None |
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| Parent | None |
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@@ -30,6 +30,26 @@ Probe and persist RN ERC20FeeProxy addresses on BSC/Arb/ETH/Polygon/Base, add US
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See PRD - Wallet, Multichain, Confirmations, AML, Trezor.md §2. Tasks: new backend/scripts/probe-rn-chains.ts that walks each chain in supported-chains.json and verifies the canonical 0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9 proxy is the real RN proxy via a known view fn (CREATE2 is deterministic, but verify); promote backend/src/services/payment/requestNetwork/tokens.ts to load from JSON + admin override; add USDT entries on all 5 chains (BSC USDT 18-dec quirk, mainnet/Arb/Polygon/Base USDT 6-dec); buildInHouseCheckoutBlock returns reason='unsupported_chain:<id>' for unknowns; new admin route GET /api/admin/rn/networks + frontend page /dashboard/admin/networks rendering the registry with per-row 'probe again'. Frontend approve flow: if buyer is on Ethereum mainnet AND token is USDT AND current allowance > 0, do approve(spender, 0) first then approve(spender, amount). Acceptance: probe succeeds on at least BSC/Arb/Polygon/ETH/Base; one paid probe on BSC USDT end-to-end; mainnet USDT approve(0) reset works; admin page reflects registry. Dependencies: none — runs in parallel with #9. This is task #8 in the PRD.
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## Completed work
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- `backend/src/services/payment/requestNetwork/supportedChains.json` — 5-chain registry with RPC URLs, explorers, proxy addresses, native currency, confirmation thresholds.
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- `backend/src/services/payment/requestNetwork/tokens.json` — 10 token entries: USDC + USDT on BSC (18-dec), Ethereum (6-dec), Arbitrum (6-dec), Polygon (6-dec), Base (6-dec).
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- `backend/src/services/payment/requestNetwork/tokens.ts` — promoted to load from JSON with `reloadTokenRegistry()`, `overrideToken()`, `removeTokenOverride()`.
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- `backend/src/services/payment/requestNetwork/proxyAddresses.ts` — promoted to load from JSON with `reloadChainRegistry()`, `getChainMetadata()`, `listSupportedChains()`.
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- `backend/src/services/payment/requestNetwork/inHouseCheckout.ts` — returns `unsupported_chain:<id>` for unknown chains (was `no_proxy_for_chain_<id>`).
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- `backend/src/services/payment/requestNetwork/networkRegistryRoutes.ts` — new admin routes `GET /api/admin/rn/networks` and `POST /api/admin/rn/networks/reload`.
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- `backend/scripts/probe-rn-chains.ts` — standalone probe script verifying RPC reachability, contract code presence, and known function selectors.
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- `backend/src/app.ts` — mounted `/api/admin/rn/networks`.
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- `frontend/src/web3/config.ts` — added `arbitrum` and `base` chains with Alchemy/public RPC transports.
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- `frontend/src/sections/payment/checkout/rn-in-house-checkout-view.tsx` — per-chain explorer URLs, USDT-mainnet `approve(0)` reset logic with UI state.
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- `frontend/src/sections/admin/networks/` — new admin networks list view.
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- `frontend/src/app/dashboard/admin/networks/page.tsx` — Next.js page for `/dashboard/admin/networks`.
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- `frontend/src/actions/network-registry.ts` — API client for admin network registry endpoints.
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- `frontend/src/routes/paths.ts` + `nav-config-dashboard.tsx` — added navigation entry.
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- Versions bumped: backend 2.6.45 → 2.6.46, frontend 2.6.44 → 2.6.46.
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## Verification
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_No verification strategy._
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- All 58 relevant backend tests green (`rn-in-house-checkout`, `derived-destinations`, `sweep-service`, `request-template-orphan-cleanup`).
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- Frontend `tsc --noEmit` clean.
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- Pending: live paid probe on BSC USDT end-to-end; probe script execution on dev; mainnet USDT `approve(0)` reset manual verification.
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