I am creating a crypto-trading platform . I wanted to know how to create wallet address dynamically for all new registered user and also create new address for every transaction. I am using bitcoind for […]
I’m trying to get the price of a crypto-currency at a specific timestamp. So I used the API cryptocompare : https://www.cryptocompare.com/api/# For example : https://min-api.cryptocompare.com/data/pricehistorical?fsym=ETH&tsyms=USD&ts=mytimestamp This solution works well but I have some issues related […]
I’ve used bitcoinj wallet and used derive path as below. public static final ImmutableList<ChildNumber> ACCOUNT_ZERO_PATH = ImmutableList.of(ChildNumber.ZERO_HARDENED); But I made changes in above path for generating bip44 standard addresses. public static final ImmutableList<ChildNumber> BIP44_ACCOUNT_ZERO_PATH =ImmutableList.of(new […]
I want to manually create a transaction to spend the output of a P2SH tx, but I don’t know where the redeem script should be placed in the new transaction? I followed an online tutorial […]
As I understand the SVP protocol, a client can be reasonably certain that a transaction has been accepted on the blockchain if they know it is a member of a certain block, via the Merkle […]
I’m considering a scenario in lightning, where it would be extremely useful to be able to lock the funds in 2/3 lock Is this possible on lightning network (even in theory)?
The example is in here: https://www.blockchain.com/BTC/tx/63910fdfa84db96bd1f28fead4c32f97388d5368c10059d035aac3c5f72fcdc0 Actually, there are two outputs DUP HASH160 PUSHDATA(20)[78ce48f88c94df3762da89dc8498205373a8ce6f] EQUALVERIFY CHECKSIG and RETURN PUSHDATA(36)[aa21a9ed9463ee420b10cbad1d997bfa132a89dc9ba3de04e7233e6e6954f1bc339ebb1a] The strange point is the first output has 12.77303443 BTC, the second is 0 BTC. There […]
I am trying to send a transaction in the cli using electrum with the command ~$ electrum –testnet payto mvYrQck9VfujSanmwvQxiLab3fLuywGdvh 0.01 -f 0.002 Password: (I entered the correct password here) Q { “complete”: true, “final”: […]
I am new to the whole Bitcoin thing, and I am having my first attempt almost going sour. I lost where I created my wallet. I have my Bitcoin address and only 11 of my […]
This already summaries the issue I’m currently trying to figure out to calculate the transaction fee to prevent negative balance. (testnet) I tried using createrawtransaction answered. When I tried to send all balance to an […]