Bech32 Multisig error: Witness requires empty scriptSig (code 64)

I’ve been able to do multisig between two addresses from electrum and one from bitcoind. [root@test bin]# bitcoin-cli -testnet getnewaddress n3JewuY82cprdRvxHdRNG8C3iTkJBKeLbz [root@test bin]# bitcoin-cli -testnet getaddressinfo n3JewuY82cprdRvxHdRNG8C3iTkJBKeLbz { “address”: “n3JewuY82cprdRvxHdRNG8C3iTkJBKeLbz”, “scriptPubKey”: “76a914eeff4b7b1c133c7f72c1b28c4d3c45fdf377c38788ac”, “ismine”: true, “solvable”: true, “desc”: “pkh([55e0eacd/0’/0’/23′]0361ac153cfc0c5cefb74fa904ca83105ccdcbaa3c1ebb8266a03212619ae1006a)#egqffv76”, “iswatchonly”: false, “isscript”: false, “iswitness”: false, “pubkey”: “0361ac153cfc0c5cefb74fa904ca83105ccdcbaa3c1ebb8266a03212619ae1006a”, “iscompressed”: true, “label”: “”, “ischange”: false, “timestamp”: 1576329907, “hdkeypath”:…

Correct ABI payload packaging to call another Contract’s address

Let’s suppose I have the two following contracts, Dest and Proxy: pragma solidity ^0.5.0; contract Dest { function foo(string memory name, string memory symbol, uint256 decimals, uint256 totalSupply, address sender, uint256 value) public { /* * Logic code Here */ } function bar(address a, address b, address c, address d, uint256 e, address f, address…

Why Full Node stores whole blockchain instead of only the UTXO set?

So I have started learning bitcoin recently (from Bitcoin and Cryptocurrency course @ Coursera). And I just learnt that there are “Full-Validating Note” out there that are: Permanently connected Store the whole blockchain Hear and forward every node/trans My question is why the Full Nodes need to store the whole blockchain instead of just saving…

gasCost of opcode “STATICCALL” in Geth VM Trace

{ “pc”: 4765, “op”: “STATICCALL”, “gas”: 222711, “gasCost”: 219243, “depth”: 1, … } As above, Geth VM Trace (https://etherscan.io/vmtrace?txhash=0x457c267f3acea528fdf0159a05d0794270a858fed9ad71b96d6ad66b44975eec) shows that gas cost of “STATICCALL” is 219243, which seems impossible because it’s even larger than the entire gas consumption of the transaction. So, how to interpret this?

TypeError: balance.toNumber is not a function

I need check that token has no balance when selfDestruct was called, but shows an error that balance.toNumber is not a function in the test file. DappTokenSale.sol function endSale() public { //Require Admin (Only Admin can end the Sale) require(msg.sender == admin); //Transfer remaining dapp tokens to admin require(tokenContract.transfer(admin, tokenContract.balanceOf((address(this))))); // Destroy contract at the…

How to invoke functions or get data in/of a contract from another contract?

I have a contract that creates instances of a contract and now I have to get the data of the newly created contract. Is there a way to do that? This is my contract that creates new contracts: pragma solidity ^0.4.8; contract myFirstContract { address[] public childContracts; uint public idd; string public name1; function newContracts(uint…