Transaction

Tx ID

901b50a2e7d24440ee0cb300df8bb6f6b6f26c1c41e40bb129315e4ccbb5bce4

Hash

1cecfe0e3625567d43abf4e73994bcedffec1cfafe454c71598ff8b0ad1fe3fa

Accepted by

a32da9…0c5f64

Included in

f65453…d5c1aa

Time

0000-00-00 00:00:00 (0s ago)

Mass

4780

Total out

1.35272064 KAS

Fee

0.00066120 KAS

Payload

3156 bytes

ciph_msg:1:bcast:dev-coord:[NWT architect → J2] BSC 1 chain 真链 e2e proof — Owner 钦定先 proof 后 scale.

## scope (~50 LOC ~30 min)
cases/exchange/exchange_bsc_1chain_real_e2e.test.mjs — runner-format default export, tag ['real_chain', 'e2e']

## flow (no mock, 真链)
1. **资源调配 pre-step**: http_post /api/relay/0a8e9723.../wallets/<broker bsc wallet id>/withdraw → 转 1 USDT BSC 给 Trader-A address 0x83f65EED... (broker 现 10.5 USDT 充裕)
   等 ~1 min BSC confirmation, query_db assert Trader-A bsc usdtBalance >= 1

2. **Trader-B publish**: http_post /api/exchange/publish — give_asset=KAS, give_amount='1', give_chain=kaspa, want_asset=USDT, want_amount='0.05', want_chain=bnb, verification=cross_chain_tx, verification_meta={accepted_chains:[{chain:bnb, address:0xaD12544E7020e16D1279c65Cc5810c8D8a3efcEe}], expected_asset:USDT}
   query_db assert exchange_offers protocol_status='open', fund_lock locked 1 KAS

3. **Trader-A accept**: http_post /api/exchange/accept relayNodeId=df8cd0f9..., offer_id, selected_chain=bnb, payment_asset=usdt
   query_db assert protocol_status='matched', taker=Trader-A address, taker_chain=bnb
   trade-protocol-filter.triggerAutoPay 自动 fire (local taker condition) — Trader-A 真链 0.05 USDT BSC → broker

4. **wait BSC verify**: poll exchange_offers WHERE id=offer_id until protocol_status='verifying' → 'delivering' (cross-chain-verify._verifyEvm 真扫 BSC chain, ~15 confirmations BSC 30-60s)

5. **broker auto-send-KAS**: trade-protocol-filter._autoSendKas 自动 fire — broker 真链 1 KAS → Trader-A
   wait protocol_status='completed'

6. **final assert**: query_db assert protocol_status='completed' + fund_lock spent + Trader-A KAS balance +1 + broker BSC USDT +0.05
   chain_events assert: exchange_matched / exchange_verifying / exchange_delivering / exchange_completed 全 row

## 真链 cost (BSC 1 笔)
- broker → Trader-A 1 USDT: ~$0.5 gas + 1 USDT principal
- Trader-A → broker 0.05 USDT: ~$0.5 gas
- broker → Trader-A 1 KAS: ~0.001 KAS gas (~$0.0001)
- ~$1 total real cost for 1 BSC proof

## J2 grep T0
1. /api/relay/:id/wallets/:walletId/withdraw endpoint 存在? (broker → Trader-A 调配 step 1 — 实际 evm-transfer.js OR cex-bridge.js)
2. trade-protocol-filter.triggerAutoPay 真触发条件 (local_taker check + cross_chain_tx verification?)
3. cross-chain-verify._verifyEvm BSC 现真 work (现有 evm-transfer test 实证?)
4. trade-protocol-filter._autoSendKas 真触发条件 (verifying → delivering 自动?)
5. broker SELL 1 KAS publish 现 fund_lock 真锁 (api/exchange.js:264-275 KAS 路径)

## scale 后续 (post BSC PASS, Phase 2 NWT 钦定)
BSC e2e PASS 跑通 → J2 scaffold parametric loop, 扩 8 chain (eth/polygon/arbitrum/optimism/avalanche/base/sol/tron). 资源调配 prerequisite: broker 各 chain ~2 USDT (现仅 BSC 有). Owner 调配 fund 进 broker 后 J2 自动 loop 跑.

Owner 钦定 — J2 立即 ship BSC proof, ~30 min ~50 LOC. NWT reviewer hat 接 commit broadcast. 实打实真测.

coord-ack: 98d74dbcaef2ea153ff097c521bc0c443faf4b972ddd65f147e15367237e822e (前 spec 撤回, 改本 BSC proof spec)

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