Bitcoin (BTC) faced a potentially volatile day on Jan. 18, with multiple macro triggers beginning to unsettle the outlook.

BoJ refuses to hike

Data from Cointelegraph Markets Pro and TradingView showed BTC/USD holding firm above $21,000 on the day.

The pair remained cool amid news from Japan, where the central bank — the Bank of Japan (BoJ) — had decided to keep an ultra-easy policy in place, defying expectations of an interest rate hike.

In doing so, both the Japanese yen and the United States dollar took a hit in the latest chapter of a saga closely watched by crypto commentators.

“In keeping its key rate and yield curve control policy unchanged at today’s meeting, the Bank of Japan probably wanted to convey a message to the market; don’t fight the BoJ,“ ING Bank said in a dedicated response piece.

Cointelegraph contributor Michaël van de Poppe focused on a fresh decline in the U.S. Dollar Index (DXY) following the news.

“Another bearish retest taking place on the DXY, in which this one starts to drop substantially, maybe even due to the announcements from the BoJ earlier today,” he summarized.

In the event, DXY bounced at 101.9, not quite retesting the seven-month lows achieved on Jan. 16.

Van de Poppe also noted upcoming data from the U.S. in the form of the Producer Price Index (PPI) for December 2022.

“In a few hours we’ll get PPI numbers and Retail Sales,” he added.

“Might be some moving around after.”

BTC whale bidding raises questions

On Bitcoin markets, meanwhile, suspicion continued to swirl around activity on the Binance order book as large-volume traders posted more and more bid liquidity.

Related: Bitcoin hits new post-FTX high as analysis warns move ‘choreographed’

On-chain analytics resource, Material Indicators argued that a single entity was potentially moving bids higher, helping buoy BTC/USD at two-month highs.

“Speculating that it could be the same whale using the $4M to insulate their $22M and give enough time to rug the $22M if the $4M gets hit. Just a theory. Time will tell,” one of multiple Twitter posts on Jan. 17 stated.

A subsequent tweet nonetheless voiced concern over “how long they can keep this up,” implying a corrective move could still hit Bitcoin.

The latest snapshot of the Binance order book showed the strongest resistance clustered at $22,000.

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