Tech giant Amazon has been granted a patent for a proof-of-work (PoW) cryptographic system similar to those used by many blockchains.
Online payments giant PayPal has been awarded a patent for a technique that could detect a type of crypto malware and mitigate its effects.
In a patent filing released Thursday, Capital One set out a blockchain system its says allows secure user authentication across multiple platforms.
The phrase "trusted execution environment" is identified in two Microsoft patent applications to be a key component in future blockchain projects.
California-based business and financial software company Intuit has been awarded a patent for processing bitcoin payments via text message.
Nippon Telegraph and Telephone is looking to invent a new contract agreements system based on blockchain technology.
Barclays Bank proposed using blockchain to make various banking processes more efficient in a pair of patent applications.
Mastercard is looking to improve crypto by designing a payments system that will link accounts holding both fiat currency and cryptocurrencies.
Credit card giant American Express may be looking into developing a new proof-of-payment (PoP) system based on blockchain technology.
Nasdaq is seeking to patent a system for securely distributing time-sensitive information by way of a blockchain, records show.