Transaction

What happened, step by step

1. flash-trader-1765338285.testnet to flash-trader-1765338285.testnet

   start_flash_loan_arbitrage()

   Arguments (1349 bytes)

   {
     "token": "wrap.testnet",
     "amount": "506250000000000001572864",
     "actions": [
       {
         "pool_id": 2589,
         "contract": "ref-finance-101.testnet",
         "token_in": "wrap.testnet",
         "token_out": "nbtc2-nsp.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 2321,
         "contract": "ref-finance-101.testnet",
         "token_in": "nbtc2-nsp.testnet",
         "token_out": "deltanear.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 1887,
         "contract": "ref-finance-101.testnet",
         "token_in": "deltanear.testnet",
         "token_out": "deltausdc.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 2341,
         "contract": "ref-finance-101.testnet",
         "token_in": "deltausdc.testnet",
         "token_out": "ref.fakes.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 341,
         "contract": "ref-finance-101.testnet",
         "token_in": "ref.fakes.testnet",
         "token_out": "nusdt.ft-fin.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 267,
         "contract": "ref-finance-101.testnet",
         "token_in": "nusdt.ft-fin.testnet",
         "token_out": "nusdc.ft-fin.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 631,
         "contract": "ref-finance-101.testnet",
         "token_in": "nusdc.ft-fin.testnet",
         "token_out": "lnc.factory.tokenhub.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       },
       {
         "pool_id": 395,
         "contract": "ref-finance-101.testnet",
         "token_in": "lnc.factory.tokenhub.testnet",
         "token_out": "wrap.testnet",
         "amount_in": null,
         "min_amount_out": "1"
       }
     ],
     "min_profit": "0"
   }

   Logs (1)

   Starting flash loan arbitrage: loan_id=1765489648061854764_171, token=wrap.testnet, amount=506250000000000001572864

2. flash-trader-1765338285.testnet to liquidity-vault-1765338285.testnet

   flash_loan()

   Arguments (1619 bytes)

   {
     "token": "wrap.testnet",
     "amount": "506250000000000001572864",
     "callback_contract": "flash-trader-1765338285.testnet",
     "callback_function": "execute_flash_loan_arbitrage",
     "callback_args": "{\"loan_id\":\"1765489648061854764_171\",\"token\":\"wrap.testnet\",\"amount\":\"506250000000000001572864\",\"actions\":[{\"pool_id\":2589,\"token_in\":\"wrap.testnet\",\"amount_in\":null,\"token_out\":\"nbtc2-nsp.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":2321,\"token_in\":\"nbtc2-nsp.testnet\",\"amount_in\":null,\"token_out\":\"deltanear.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":1887,\"token_in\":\"deltanear.testnet\",\"amount_in\":null,\"token_out\":\"deltausdc.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":2341,\"token_in\":\"deltausdc.testnet\",\"amount_in\":null,\"token_out\":\"ref.fakes.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":341,\"token_in\":\"ref.fakes.testnet\",\"amount_in\":null,\"token_out\":\"nusdt.ft-fin.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":267,\"token_in\":\"nusdt.ft-fin.testnet\",\"amount_in\":null,\"token_out\":\"nusdc.ft-fin.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":631,\"token_in\":\"nusdc.ft-fin.testnet\",\"amount_in\":null,\"token_out\":\"lnc.factory.tokenhub.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null},{\"pool_id\":395,\"token_in\":\"lnc.factory.tokenhub.testnet\",\"amount_in\":null,\"token_out\":\"wrap.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null}],\"min_profit\":\"0\"}"
   }

   Logs (1)

   Flash loan requested: loan_id=1765489648750388736_246, token=wrap.testnet, amount=506250000000000001572864, fee=455625000000000001415, borrower=flash-trader-1765338285.testnet

3. liquidity-vault-1765338285.testnet to wrap.testnet

   ft_transfer() with 1 yoctoNEAR

   Arguments (129 bytes)

   {
     "receiver_id": "flash-trader-1765338285.testnet",
     "amount": "506250000000000001572864",
     "memo": "flash_loan:1765489648750388736_246"
   }

   Logs (2)

   Transfer 506250000000000001572864 from liquidity-vault-1765338285.testnet to flash-trader-1765338285.testnet
   Memo: flash_loan:1765489648750388736_246

4. liquidity-vault-1765338285.testnet to flash-trader-1765338285.testnet

   execute_flash_loan_arbitrage()

   Arguments (1273 bytes)

   {
     "loan_id": "1765489648750388736_246",
     "token": "wrap.testnet",
     "amount": "506250000000000001572864",
     "actions": [
       {
         "pool_id": 2589,
         "token_in": "wrap.testnet",
         "amount_in": null,
         "token_out": "nbtc2-nsp.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 2321,
         "token_in": "nbtc2-nsp.testnet",
         "amount_in": null,
         "token_out": "deltanear.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 1887,
         "token_in": "deltanear.testnet",
         "amount_in": null,
         "token_out": "deltausdc.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 2341,
         "token_in": "deltausdc.testnet",
         "amount_in": null,
         "token_out": "ref.fakes.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 341,
         "token_in": "ref.fakes.testnet",
         "amount_in": null,
         "token_out": "nusdt.ft-fin.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 267,
         "token_in": "nusdt.ft-fin.testnet",
         "amount_in": null,
         "token_out": "nusdc.ft-fin.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 631,
         "token_in": "nusdc.ft-fin.testnet",
         "amount_in": null,
         "token_out": "lnc.factory.tokenhub.testnet",
         "min_amount_out": "1",
         "target_contract": null
       },
       {
         "pool_id": 395,
         "token_in": "lnc.factory.tokenhub.testnet",
         "amount_in": null,
         "token_out": "wrap.testnet",
         "min_amount_out": "1",
         "target_contract": null
       }
     ],
     "min_profit": "0"
   }

   Logs (1)

   Executing flash loan arbitrage: loan_id=1765489648750388736_246, token=wrap.testnet, amount=506250000000000001572864

5. flash-trader-1765338285.testnet to wrap.testnet

   ft_transfer_call() with 1 yoctoNEAR

   Arguments (267 bytes)

   {
     "receiver_id": "ref-finance-101.testnet",
     "amount": "506250000000000001572864",
     "memo": null,
     "msg": "{\"actions\":[{\"pool_id\":2589,\"token_in\":\"wrap.testnet\",\"amount_in\":null,\"token_out\":\"nbtc2-nsp.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null}]}"
   }

   Logs (1)

   Transfer 506250000000000001572864 from flash-trader-1765338285.testnet to ref-finance-101.testnet

6. wrap.testnet to ref-finance-101.testnet

   ft_on_transfer()

   Arguments (261 bytes)

   {
     "sender_id": "flash-trader-1765338285.testnet",
     "amount": "506250000000000001572864",
     "msg": "{\"actions\":[{\"pool_id\":2589,\"token_in\":\"wrap.testnet\",\"amount_in\":null,\"token_out\":\"nbtc2-nsp.testnet\",\"min_amount_out\":\"1\",\"target_contract\":null}]}"
   }

   Logs (2)

   Swapped 506250000000000001572864 wrap.testnet for 30223 nbtc2-nsp.testnet
   Exchange ref-finance-101.testnet got 106646052289902558530 shares, No referral fee

7. ref-finance-101.testnet to nbtc2-nsp.testnet

   ft_transfer() with 1 yoctoNEAR

   Arguments (78 bytes)

   {
     "receiver_id": "flash-trader-1765338285.testnet",
     "amount": "30223",
     "memo": null
   }

   Logs (1)

   EVENT_JSON:{"standard":"nep141","version":"1.0.0","event":"ft_transfer","data":[{"old_owner_id":"ref-finance-101.testnet","new_owner_id":"flash-trader-1765338285.testnet","amount":"30223"}]}

8. wrap.testnet to wrap.testnet

   ft_resolve_transfer()

   Arguments (123 bytes)

   {
     "sender_id": "flash-trader-1765338285.testnet",
     "receiver_id": "ref-finance-101.testnet",
     "amount": "506250000000000001572864"
   }

9. liquidity-vault-1765338285.testnet to liquidity-vault-1765338285.testnet · failed

   verify_repayment()

   Arguments (37 bytes)

   {
     "loan_id": "1765489648750388736_246"
   }

   Smart contract panicked: panicked at src/lib.rs:290:9: Repayment not completed! Required: 506705625000000001574279, Received: 0. Transaction will revert.

   Logs (1)

   Verifying repayment: loan_id=1765489648750388736_246, token=wrap.testnet, required=506705625000000001574279, current_balance=1338721508213211666315542051

10. ref-finance-101.testnet to ref-finance-101.testnet

    exchange_callback_post_withdraw()

    Arguments (95 bytes)

    {
      "token_id": "nbtc2-nsp.testnet",
      "sender_id": "flash-trader-1765338285.testnet",
      "amount": "30223"
    }

10 automatic refund steps from the network not shown.

Check this yourself

This page reads FastNEAR's public transaction index and stores nothing. This command asks a NEAR archival node for the same transaction and needs no keys.

curl -s https://archival-rpc.testnet.fastnear.com -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"tx","params":{"tx_hash":"6DDRVCW3n1ToLZgCvdmxJSJPTgwg9AqxU27AmzcB3KwM","sender_account_id":"flash-trader-1765338285.testnet","wait_until":"FINAL"}}'

Vouch has its own page because testnet.nearblocks.io stopped indexing on 27 Sep 2026, so it can't show newer transactions.