The new payment system of bitpay creates a great risk to the anonymity of the user of bitcoin system.
As we read to Samurai Wallet blog:
"Bitpay has replaced BIP21 entirely with different, more controversial proposals, BIP’s 70,71,72. BIP70 was originally proposed by Gavin Andresen and Mike Hearn in 2013 - who championed creating bitcoin blacklists - generated a lot of controversy and remains largely unadopted by the majority of wallet and service providers due to many security and privacy concerns.
BIP70 introduces the requirement on developers to support legacy public-key infrastructure dependencies with known track records of vulnerabilities (openssl and heartbleed, etc…). Additionally, widespread implementation of BIP70 introduces an exposure to increased risk of AML/KYC surveillance and monitoring of on-chain transactions and more effective blacklists."
http://blog.samouraiwallet.com/post/169222582782/bitpay-qr-codes-are-no-longer-valid-important And this risk is not only about Bitcoin but and to other altcoins that Bitpay will soon add as payment like Litecoin, Bitcoin Cash, Ethereum.
Everyone must stop using Bitpay asap.
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