UnhandledPromiseRejectionWarning: Error: Returned error: nonce too low

I am trying to deploy some contracts on Ropsten network. Here is my code async function finalDeploy(r){ for(i=0; i<constructorParams.length; i++) { const options = { data: ‘0x’ + myBin[r]+constructorParams[i], gas: 5000000, }; const signed = await web3.eth.accounts.signTransaction(options, privateKey1); const receipt = await web3.eth.sendSignedTransaction(signed.rawTransaction); // here error occured console.log(“Contract: ” +r+” is deployed at ” +receipt.contractAddress);…

How does Bitcoin Core manage its peer nodes? Is it possible to let it automatically switch to faster nodes?

It’s usually frustrating when my Bitcoin Core full node is syncing, especially just catching up from merely several hours/days ago. I wonder how does Bitcoin Core manage its peers? Will it disconnect with slower nodes, and then turn to faster ones? I once heard of the eclipse attack issue. However, as far as I know,…

spend from p2sh with bitcoinj

i am try to spend the coins on a p2sh first, i generate p2sh and send coins to that p2sh ECKey clientKey = new ECKey(); ECKey serverKey = new ECKey(); ECKey thirdPartyKey = new ECKey(); List<ECKey> keys = ImmutableList.of(clientKey, serverKey,thirdPartyKey); Script multisigScript = ScriptBuilder.createP2SHOutputScript(2, keys); String address = multisigScript.getToAddress(params).toString(); then i send coins to the…