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Bitcoin’s Lightning Network enables users to generate secure off-chain channels and send payments in Bitcoin back and forth almost instantaneously, at almost zero cost. It enables vendors to accept Bitcoin as a payment method, without experiencing the inconvenience and potential drawbacks, while fully enjoying the security of the blockchain. Lightning Network was originally described by Thaddeus Dryja and Joseph Poon in 2015, but the talk of wide-scale adoption for retail purposes was out there only in 2018. As we are about to enter 2020, we have already seen major use cases of retailers adopting Bitcoin payments: Swiss nationwide provider Worldline has just announced that 65,000 merchants in its clients network will soon be able.