After a certain trading cycle is finalized, you transfer the coins(or assets) to your wallet(s) using a secure transaction. You make a deposit for credits and issue authorizations for both inputs and outputs in the database. What operates like credit card systems in crypto space are exchanges. The balance information is stored in a centralized database and is the summation of all balances within the billing cycle. The credit card throughput is so called authorizations. So the actual transactions of assets from bank accounts to credit card company’s accounts take place based on contractual billing cycle, which is normally once a month per account. It is the credit that is given to users and the balance is charged to users on a monthly basis. However, it is not the case and I would like to propose a counter-argument for this kind of analysis.įor credit card transactions, the assets are not really moving. The more decentralized a blockchain is, the slower its performance can be. If you look at it this way, the blockchain’s performance seems really slow. The current block size of QWC is 1Mb and it can hold up to about 1,000 transactions per block. The size of each block has to be close to 300 Mb per block.(600,000 transactions per block x 500 bytes per transaction) This translates to 5,000 x 60 x 2 = 600,000 transactions per block. What these figures translate to in terms of blockchain (example: QWC) is like this,ĥ,000 txs per second x 60 seconds per minute x 2 minute per block. You can easily find the average size of credit card transaction data online about 500 bytes in average and its throughput 5,000 transactions per second. blockchain’s performance in unit of transactions per second. Often you will find a comparative analysis between Visa and Mastercard’s transaction throughput vs. Blockchain transactions vs Credit card transactions