As bitcoin traded below its key $100,000 milestone this week, recent selling by "whales" - or holders of large amounts of the cryptocurrency - along with other long-term holders has emerged as a notable contributor to the recent weakness. Most blockchain-analytics firms define "whales" as individuals or institutions holding 1,000 bitcoin or more. Although the identities of most whales are unknown, blockchain data can still offer insights into their activity by tracking their crypto wallets. Those data have shown that some whales recently stepped up their bitcoin sales. That's notable, but it's not necessarily a sign ... (full story)