I'm new and have no more experiences in Bitcoin transactions. While some transactions, I'm hearing a bell sound.
1. At what time it comes? When a payment receives to address or first confirmation?
2. Who produces that sound alert? the tx service provider or blockchain itself?
Thanks.
have you paid some bitpay invoices? when your bitcoin payment gets confirmed on the blockchain, bitpay marks the invoice paid. the invoice page makes a "ding" sound when that happens. sometimes when you pay a really high fee, bitpay will do this as soon as they see the bitcoin transaction on the blockchain. (no waiting for a confirmation)
the bitcoin protocol / the blockchain doesn't make any sounds.