19.44 BTC just moved out of addresses publicly attributed to Bybit reserve wallets (attribution: https://www.bybithelp.com/bybitHC_Article?id=000001880). The attribution is public documentation, not a SENTINEL measurement.
According to SENTINEL event ux_1rwbbsr (source mempool.space): BYBIT: 19.44 BTC OUT. Verify: https://sentinelbtc.com/api/v1/events/unusual/ux_1rwbbsr