Hal Finney was a respected Bitcoin contributor and known computer scientist. He attempted to create a cryptographic currency based on a Proof of Work system before Bitcoin was created. Finney helped Satoshi find bugs on the Bitcoin software when it was first released and one of the first miners. Thanks to visionaries like him cryptocurrencies and blockchain technology have prospered and their usage continues to grow around the world.
Hal Finney’s wallet address that receive the first transaction from Satoshi Nakamoto is: 1Q2TWHE3GMdB6BZKafqwxXtWAWgFt5Jvm3
Every Bitcoin enthusiast should visit Hal Finney’s blog post on bitcointalk.org where he shared his experience with Bitcoin on a post titled: Bitcoin and me (Hal Finney)