A single unconfirmed transaction is moving 52.72 BTC across the network. It is not yet in a block and can be replaced.
According to SENTINEL event ux_170g7wr (source mempool.space): 52.72 BTC ENTERED THE MEMPOOL. Verify: https://mempool.sentinelbtc.com/api/v1/events/unusual/ux_170g7wr