The Hedera services are available as open source and can be found in the official GitHub repository: https://github.com/hashgraph/hedera-services
The hashgraph algorithm is protected by patents. The patents are a tool designed to inhibit forking and the associated instability and loss of network effects. The absence of enterprise-grade applications running on the public networks today is partly due to the possibility of those networks splitting into competing networks and cryptocurrencies. This represents risk to anyone considering building mission critical applications on those networks. The patents will allow Hedera to make a commitment to such enterprises that we will never authorize a fork.
The hashgraph platform is available as open review and has been audited by multiple code audit firms. The audit from FP Complete for the hashgraph consensus platform code, as well as the COQ proof from Carnegie Melon, are made available on the 'Audits and Standards' page: https://hedera.com/audits-and-standards
Sources:
All our services are belong to you
When will I be able to review the Hedera source code? Has the Hedera source code been audited? If so, is the audit publicly available?
What is the OSS license for Hedera network services?
How can I contribute to the OSS Hedera network services?
The place where agents of SHAFT provide you with ammo against Hedera FUD.
This is a community effort, so please do sign up to send in and answer questions in order to strenghten the fight against Hedera FUD!