According to Arkham Intelligence, Coinbase holds a staggering Bitcoin stash: $52 billion worth of Bitcoin, making it the top holder of BTC, with over 4.3% of the total supply.Coinbase holds $52 Billion of Bitcoin. They’re the top holder of BTC with over 4.3% of the supply," Arkham Intelligence wrote in a tweet.In light of the recent announcement about "cbBTC," Arkham Intelligence poses an interesting question concerning Coinbase's significant Bitcoin reserves: "How much of this will be channeled into the decentralized finance (DeFi)?"Coinbase recently released a tweet about "cbBTC." In the X thread, Coinbase teased the upcoming launch of cbBTC, expected to play a crucial role in the DeFi space on the Base network, Coinbase's Ethereum layer-2 blockchain.