Bitcoin's dollar price fell back below $48,000 on December 28, 2021, reversing a short-lived move above $50,000 and pulling much of the large-cap cryptocurrency market lower. The cleanest venue-level record is Coinbase Exchange's BTC-USD daily candle for the 24 hours beginning at 00:00 UTC: it opened at $50,720.35, traded as low as $47,300.23 and closed at $47,543.09.
That was a $3,177.26 decline from the UTC open, or 6.26%, calculated by Coinburn from Coinbase's published candle. Coinbase recorded 23,116.76 BTC of volume in that interval. Those figures describe one exchange, one dollar pair and one UTC session; they are not a universal cryptocurrency “closing price.”
Independent records show a broad retreat
CoinMarketCap's December 28 historical snapshot, which aggregates markets rather than reproducing Coinbase's single-venue candle, placed bitcoin at $47,588.85 and down 6.03% over its 24-hour measurement window. The same snapshot put ether at $3,800.89, down 5.86%, while Solana was down 9.21%, XRP 7.91%, Polkadot 9.71% and Dogecoin 7.24%. Stablecoins in the table remained near their intended dollar values.
Coinbase's ETH-USD candle tells a similar story with a different cutoff convention: ether opened the UTC session at $4,038.18 and closed at $3,793.67, a Coinburn-calculated decline of 6.05%. Its recorded range was $3,760.01 to $4,038.68, with 203,399.82 ETH changing hands on that venue.
A contemporaneous Reuters market alert reported bitcoin at $47,606.92, down 6.13% from its selected previous close, and ether at $3,812.60, down 5.57%. The small differences among Reuters, CoinMarketCap and Coinbase are expected because crypto trades continuously, venues do not share a single closing auction, and snapshots can use different timestamps and aggregation rules. The agreement is in direction and scale: the two largest cryptoassets both lost roughly 6% during the December 28 selloff.
Why the $48,000 break mattered
The move interrupted a holiday-period recovery. Coinbase's BTC-USD record shows bitcoin had reached $52,100 on December 27 before closing that UTC session at $50,717.77. By the next UTC close, the price was more than $3,000 lower. Reuters also measured bitcoin about 31% below the $69,000 high it cited for November 10, 2021.
That context mattered because the December 28 decline was not an isolated small-token dislocation. Bitcoin and ether weakened together, and the CoinMarketCap snapshot showed losses across most of the largest non-stablecoin assets. It demonstrated how quickly a rebound could unwind in a continuous market during the final week of 2021.
The records do not establish a single cause. Price action alone cannot distinguish year-end positioning, reduced holiday liquidity, derivatives activity, macroeconomic risk appetite or asset-specific selling. Coinburn therefore treats broad co-movement as an observation, not proof that one mechanism drove every market.
What the record can and cannot prove
The verified conclusion is narrow: on December 28, 2021, bitcoin fell below $48,000 and lost about 6% under several documented measurement methods, while ether and many large-cap tokens also declined. Coinbase supplies reproducible venue data; CoinMarketCap supplies a cross-market snapshot; Reuters supplies contemporaneous confirmation.
None of those records makes the December 28 move a forecast, and none establishes investor intent. Historical candles can also be revised or contain gaps; Coinbase expressly warns that its historical rates may be incomplete where no ticks exist. The responsible archive treatment is therefore a dated market measurement with named sources, not a claim about what prices had to do next.
The complete source packet and revision history are retained with the newsroom record.
Automated systems may have assisted with source organization and drafting. Coinburn is accountable for the published text and maintains a revision record.
This article provides news and analysis, not investment, legal or tax advice. Digital assets are volatile and may result in total loss.

