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opera with free vpn for android apkIn general, Bitcoin transactions are irreversible, and merchants know within a few seconds after you click Send that you’ve paid for your drink (or whatever you’re buying).When miners on the Bitcoin network detect two transactions that spent the same bitcoins (but were sent to different addresses), they usually accept whichever one they received first and ignore the second.In general, the higher the value of the item being transacted, the more confirmations a merchant can wait demand before considering the transaction to be settled.nordvpn 30 day trialThe concept is simple enough, but why do merchants require transaction confirmations? For low-value transactions, such as buying a cup of coffee, merchants normally forgo the transaction confirmation.7 Transaction fees are typically a few cents and are part of the reward that miners receive when they win the lottery and add a new block to the blockchain.The number of newly minte