Bitcoin entered December 6, 2020 holding near the top of a record-setting week rather than immediately surrendering the breakthrough. Coinbase’s weekly U.S.-dollar market note, published on December 6, reported that its Bitcoin series reached $19,900 on December 1 and then traded between $18,500 and $19,500 through the remainder of the November 29–December 6 window.

That consolidation mattered because the December 1 print had exceeded the late-2017 peak in Coinbase’s series. The market was no longer merely approaching the level associated with the previous cycle; it was testing whether prices around $19,000 could persist after the first break above it.

A record week, then a range

Coinbase calculated that Bitcoin had gained more than 170% from the start of 2020 through December 6. In the same comparison, its note put gold’s gain at about 22% and the U.S. Dollar Index’s decline at 6%. Those are Coinbase’s contemporaneous comparisons, not a Coinburn recomputation: the page does not specify the exact observation times, constituent venue methodology for Bitcoin, or benchmark closing conventions.

A separate exchange record helps anchor the range without pretending there was one universal Bitcoin price. Kraken’s report for the December 5 UTC session, released on December 6, listed XBT at $19,153, up 2.6% for that reporting day. Kraken said $239.9 million traded across all of its spot markets during the UTC window, with XBT accounting for $100.4 million, or roughly 41.9% by Coinburn’s calculation. Kraken rounded the asset share to 40% in its own summary.

The two reports are not interchangeable. Coinbase described a weekly Bitcoin-in-U.S.-dollars series; Kraken measured activity on one exchange across crypto and fiat pairs using public data distributed through its WebSockets API. Their agreement around $19,100–$19,200 supports the broad market picture, but neither figure is a consolidated global close.

Institutionalization was the live thesis

Coinbase interpreted the 2020 advance as being shaped more by institutional interest than the retail-driven 2017 surge. That was an assessment, not a directly measured attribution of every trade. Still, a development already public by December 6 gave the thesis institutional context: on December 3, S&P Dow Jones Indices said it was building cryptocurrency indexing capabilities with Lukka and would offer branded and customized benchmarks supported by Lukka pricing data.

The S&P announcement did not itself prove that institutions caused Bitcoin’s rise, and it did not launch a tradeable Bitcoin product on December 6. It showed that established market-infrastructure providers saw enough demand to invest in crypto benchmark construction. That distinction matters: benchmark development is evidence of market formalization, not evidence of a guaranteed inflow or a durable price floor.

What December 6 established

The verifiable development on December 6 was therefore a market-state milestone. Bitcoin had broken the prior-cycle high in Coinbase’s series on December 1, experienced renewed volatility, and still occupied an $18,500–$19,500 band at the end of the measured week. Kraken’s immediately preceding UTC session showed active spot turnover and an XBT reference near the middle of that band.

What could not be known from the December 6 record was whether $19,900 would remain the cycle high, whether the range would resolve upward or downward, or how much of the move came from institutions rather than other participants. The defensible conclusion was narrower: Bitcoin ended the week near a historically important level while traditional market-data firms were preparing infrastructure to measure the asset class more formally.

Primary sourceCoinbase — This week in Bitcoin price: Nov. 29–Dec. 6

The complete source packet and revision history are retained with the newsroom record.

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