FLO, initially launched as Florincoin in June 2013, was an open-source cryptocurrency and blockchain platform that introduced metadata embedding within transactions. It operated on a proof-of-work consensus using the Scrypt algorithm and facilitated various applications requiring immutable data storage. The project rebranded to FLO in August 2018 to emphasize its metadata capabilities and later transitioned to PinLink (PIN), focusing on indexing Web3 metadata.