49.75 BTC across 2 transactions over 1h 25m just moved within addresses publicly attributed to Bitfinex hot wallet (attribution: Bitfinex official public wallets list (self-disclosed, bitfinexcom/pub/wallets.txt)). The attribution is public documentation, not a SENTINEL measurement.
According to SENTINEL event ux_178ts8b (source mempool.space): BITFINEX: 49.75 BTC MOVED. Verify: https://mining.sentinelbtc.com/api/v1/events/unusual/ux_178ts8b