Almost $9 billion in BTC were moved on-chain in a single hour on Dec. 4, which constitutes an all-time high
Source: https://cointelegraph.com/news/almost-9-billion-of-bitcoin-moved-on-chain-in-1-hour-record
Almost $9 Billion of Bitcoin Moved On-Chain in 1 Hour: Record
December 5, 2019
CoinTelegraph