7,999 Bitcoin Withdrawn from Coinbase: ”Possible BlackRock Accumulation”

Approximately $500 million worth of Bitcoin was withdrawn from Coinbase, the largest cryptocurrency exchange in the United States, to an unknown wallet.
On the 29th (local time), U.Today cited Whale Alert, reporting that 7,999 BTC, equivalent to $472.8 million (approximately 68.5 billion yen), was traded.
The funds were then withdrawn from a cold wallet at the ICO and sent multiple times to an address with the code "13F8P8."
However, this huge amount of cryptocurrency was then transferred to 50 different unknown addresses, each with a total of 157
The Bitcoin was then split into exact chunks worth approximately $9.27 million each and sent out again. The background to this operation is still unknown, but one thing is for sure: this incident is noteworthy.
"BlackRock, one of the Bitcoin ETF issuers, continues to invest in the cryptocurrency despite the recent decline and price fluctuations," U.Today reported.
There is a possibility that it is accumulating."