stellar-mpp-sdk/demo/channel-e2e-output.txt at ba9e67803e2013d1ff62a4d36ea7aab6d4d24f52 · stellar/stellar-mpp-sdk · GitHub

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═══════════════════════════════════════════════════════════
  Stellar MPP Channel — End-to-End Demo
  Full lifecycle: deploy → off-chain payments → on-chain close
═══════════════════════════════════════════════════════════

Demo ID: mpp-e2e-1773942774

═══ Step 1: Creating funded testnet accounts ═══

  Creating funder account...
  ✔ Funder:    GDGGJUVCIE3M4ZSCWJV4EW372P3OQ5GKBSCZFOLHMT5ZLXTZMTKKFZHP
  Creating recipient account...
  ✔ Recipient: GAHRDOKGD26XPWB2GNWFOCDJE5ZSJECLHAFJRLDEBZPVE6VR3HDLCJTV

═══ Step 2: Generating ed25519 commitment keypair ═══

  ✔ Public:  645b0ea155d757339764c75b2659886f5099c2bd3b9f6d49898a98c011147f1a
  ✔ Secret:  a6e7a144...2dd66dbd (hidden)

═══ Step 3: Deploying channel contract ═══

  Uploading WASM...
  ✔ WASM hash: f9b7fdf860ce427097226f45f72b336763ca55d46c967076a94eb9682d8c484b
  Deploying channel (deposit: 10000000 stroops = 1.0 XLM)...
  ✔ Contract:  CB2B347IE6N5C2EDV2SGUQ22KM6WFL6CWFMPFOTUYNUITVXUREOYPLAD

  Channel balance after deploy:
    "10000000" stroops

═══ Step 4: Off-chain MPP payments (2 requests × 0.1 XLM) ═══

  Starting channel server on port 3002...
  🚀 Stellar MPP Channel server running on http://localhost:3002
     Channel contract: CB2B347IE6N5C2EDV2SGUQ22KM6WFL6CWFMPFOTUYNUITVXUREOYPLAD

  Running channel client (2 off-chain payments)...

  Using commitment key: GBSFWDVBKXLVOM4XMTDVWJSZRBXVBGOCXU5Z63KJRGFJRQARCR7RUMB3

  Request 1:
    [17:53:26.904] 💳 Challenge received — 1000000 stroops via channel CB2B347IE6N5...
    [17:53:26.904]    Cumulative amount will be: 1000000 stroops
    [17:53:27.217] ✍️  Signing commitment...
    [17:53:27.218] ✅ Commitment signed (cumulative: 1000000 stroops)

    --- Response (200) ---
    {
      "message": "Payment verified via channel commitment — here is your content.",
      "timestamp": "2026-03-19T17:53:27.579Z",
      "note": "No on-chain transaction was needed for this payment!"
    }

  Request 2:
    [17:53:27.591] 💳 Challenge received — 1000000 stroops via channel CB2B347IE6N5...
    [17:53:27.591]    Cumulative amount will be: 2000000 stroops
    [17:53:27.794] ✍️  Signing commitment...
    [17:53:27.795] ✅ Commitment signed (cumulative: 2000000 stroops)

    --- Response 2 (200) ---
    {
      "message": "Payment verified via channel commitment — here is your content.",
      "timestamp": "2026-03-19T17:53:27.993Z",
      "note": "No on-chain transaction was needed for this payment!"
    }

  ✔ Server stopped. Off-chain phase complete.
  Cumulative committed: 2000000 stroops (0.2 XLM)

═══ Step 5: On-chain settlement — closing channel ═══

  Closing channel CB2B347IE6N5C2EDV2SGUQ22KM6WFL6CWFMPFOTUYNUITVXUREOYPLAD
    Amount: 2000000 stroops (0.2 XLM)
    Close key: GAHRDOKGD26XPWB2GNWFOCDJE5ZSJECLHAFJRLDEBZPVE6VR3HDLCJTV

  1. Simulating prepare_commitment...
     Commitment: 0000001100000001000000040000000f00000006...
  2. Signing commitment...
     Signature: 567c6748ed5a06a849f040a762a7e513a7f4d99e...
  3. Submitting close transaction...

  ═══════════════════════════════════════════════════════
    ✅ Channel closed on-chain!
    Transaction: c6c54df5be7b469e1259e85a05c8b7d5fdc71bebb1f937c4b5e3b540111d6463
    Verify:      https://stellar.expert/explorer/testnet/tx/c6c54df5be7b469e1259e85a05c8b7d5fdc71bebb1f937c4b5e3b540111d6463
  ═══════════════════════════════════════════════════════

═══ Step 6: Final channel state ═══

  Channel balance after close:
    "0" stroops

  (close transferred 2000000 to recipient, auto-refunded remainder to funder)

═══════════════════════════════════════════════════════════════════
  Demo Complete — Verify on Stellar Expert (testnet)
═══════════════════════════════════════════════════════════════════

  Accounts:
    Funder:    https://stellar.expert/explorer/testnet/account/GDGGJUVCIE3M4ZSCWJV4EW372P3OQ5GKBSCZFOLHMT5ZLXTZMTKKFZHP
    Recipient: https://stellar.expert/explorer/testnet/account/GAHRDOKGD26XPWB2GNWFOCDJE5ZSJECLHAFJRLDEBZPVE6VR3HDLCJTV

  Contract:
    Channel:   https://stellar.expert/explorer/testnet/contract/CB2B347IE6N5C2EDV2SGUQ22KM6WFL6CWFMPFOTUYNUITVXUREOYPLAD

  What happened:
    1. Funder deployed channel contract with 10000000 stroops deposit
    2. Client made 2 off-chain payments (0.1 XLM each) — no on-chain tx
    3. Recipient closed channel for 2000000 stroops on-chain
       → 2000000 transferred to recipient
       → remainder auto-refunded to funder

  On-chain transactions to verify:
    • WASM upload         — see funder account history
    • Contract deploy     — https://stellar.expert/explorer/testnet/tx/9c7db8b91bc3768d6ec1bbf063f0b95062f27c485afa0e210707fd3fb509bc3f
    • Channel close       — https://stellar.expert/explorer/testnet/tx/c6c54df5be7b469e1259e85a05c8b7d5fdc71bebb1f937c4b5e3b540111d6463

═══════════════════════════════════════════════════════════════════