The Bitcoin (BTC) network successfully activated the Taproot soft fork following a 90% lock-in consensus from miners and mining pools between blocks 709,488 and 709,632. The milestone signifies the first major upgrade for Bitcoin since August 2017, which saw the launch of Bitcoin’s leading layer-two solution, the Lightning Network and Segregated Witness (SegWit).
Instead of presenting paper-based certifications, travelers need only scan a QR code sent by email at the gate. Travelers without smart phones can print a QR code.
