Coinbase CEO Brian Armstrong commented on reports that "Coinbase has patented inventions, allowing users to send Bitcoin via email", saying software patents should be revoked, but in this dirty game, every company should be wise To build a defensive investment portfolio. I hope this is not the case. In response, the CEO of Blockstream replied: Agree. Crypto companies can unite to share defense patents like Linux. Blockstream's defensive patents are available through a defensive pool, which is also an improved Twitter innovator patent agreement.