18.5 BTC just moved into 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_qewl4j (source mempool.space): BITFINEX: 18.5 BTC IN. Verify: https://mining.sentinelbtc.com/api/v1/events/unusual/ux_qewl4j