...de possible through Taproot, could let groups of bitcoin users share UTXOs and enjoy more privacy.](https://img.learnblockchain.cn/2025/07/15/rotocol.png)
\- 支付池是一种可能的 Layer 2 协议，因为 Taproot 而成为可能；它可以让一群比特币用户共享一个 UTXO，从而获...
...ion declared as view, but this expression (potentially) modifies the state and thus requires non-payable (the default）or payable
两种方式调用另外一个合约的view函数，一个使用函数名直接调用，另外一个使用call调用，但是报错显示call调用会改变合约状...
...01_HelloVitalik\HelloVitalik.js"
JsonRpcProvider failed to detect network and cannot start up; retry in 1s (perhaps the URL is wrong or the node is not started)
node:internal/process/promises:288
triggerUncaughtException(err, true /* fromPromise */);
^
Error: read ECON...