The first transaction of Bitcoin currency, in block 170, takes place between Satoshi and Hal Finney, a developer and cryptographic activist. Hal Finney was the recipient of the first Bitcoin transaction. Finney has a long involvement in the crypto community. For years, he worked with the PGP Corporation developing one of the most prominent encryption products. He ran the first cryptologicially-based anonymous remailer and was involved with the cypherpunks mailing list. https://bitcointalk.org/index.php?topic=155054.0