Bitcoin reclaims $77,000 as weekly chart eyes a two-year high, and Polymarket is not buying a return to all-time peaks

Bitcoin traded through $77,000 on 21 August 2026, putting the largest cryptocurrency on course for a weekly gain of roughly 20% and its strongest seven-day stretch since the rally of mid-2024, per CNBC's same-day coverage and the Moneyweb round-up of the move.

Behind the price lies an awkward discrepancy. Polymarket, the prediction venue, was giving only a 9% probability that Bitcoin sets a fresh all-time high before 31 December 2026 as of 21 August, even as its own market for Bitcoin "reclaiming $80,000 by end of year" was pricing the same outcome above 60%. The tape is bullish; the book is nervous. The split is the story.

A week that re-priced the floor

Bitcoin crossed $70,000 on the evening of 19 August, then $73,000 the next day, and was knocking against $77,000 in the New York morning of 21 August, per the level-by-level posts on WatcherGuru and the Polymarket X account. CoinDesk's day-ahead note flagged $80,000 as the next test, with thinner weekend liquidity already shaping the tape. By Cointelegraph's 19:10 UTC market wrap on 21 August, Bitcoin had hit its highest level since mid-May and was hunting support near $77,000, while gold ran in parallel toward its own three-month high.

The arithmetic of the week is what did the talking. CNBC's 08:28 UTC piece put the gain at roughly 20% for the week and credited "investor optimism" returning to the complex. South Africa's Moneyweb, writing at 07:15 UTC, named the three levers directly: a leveraged short squeeze in the perpetual futures market, falling US bond yields, and what it called "renewed institutional inflows." WatcherGuru added, in a 20 August post, that $190 billion had been added to total crypto market capitalisation in the prior 24 hours, a tape signal rather than a structural one.

The macro sleeve

The yields side is the load-bearing pillar. A 10-year Treasury off its highs gives a discount-rate tailwind to any asset priced in present value, and Bitcoin behaves like a long-duration claim on dollar liquidity when the curve moves. WatcherGuru reported at 20:14 UTC on 19 August that US national debt had officially crossed $40 trillion, a milestone that traders read as a vote of no confidence in the long end of the curve and as cover for hard-asset positioning.

Into that backdrop, US President Donald Trump told reporters on 19 August that the United States was considering buying "sizable" amounts of Bitcoin and other cryptocurrencies, according to WatcherGuru's 19:38 UTC post, and that Washington was working to keep the country the "undisputed leader" in Bitcoin and crypto. The same string of posts carried a separate line: the Commodity Futures Trading Commission, Trump said, was "working on bringing Hyperliquid to the US." The Hyperliquid token, ticker HYPE, jumped 15% to $69 on the comment, per WatcherGuru's 19:29 UTC update.

Monexus assessment: the available source items do not specify the legal vehicle for any of those moves, no executive order text, no SEC or CFTC filing, no Treasury announcement, and this publication has not independently verified which Trump remarks were made on which venue. The wire-grade reading, strictly from what WatcherGuru posted, is that a sitting US president made a verbal commitment of state balance-sheet capacity into a leveraged market, in a week when the leveraged market was already squeezed.

Where Polymarket disagrees with Polymarket

Prediction markets are usually a way to read consensus. This week they are the disagreement.

On 20 August at 21:40 UTC, Polymarket posted that Bitcoin was now "projected to reclaim $80,000 by end of year," pricing that market above 60%. The next day, at 21:50 UTC, the same account posted a separate market giving only 9% to a fresh all-time high in 2026. The first market is a round-number technical reclaim; the second is a record print. The gap between the two prices is what this publication is reading as the story.

This desk's read: the platform's own book is treating the next four months as a mean-reversion rally, not a return to cycle highs. That is consistent with a tape driven by short covering and a softer dollar, flows that resolve once funding normalises, and inconsistent with a fresh allocation cycle that takes out the prior peak. It also explains how a leveraged perpetual squeeze can run 20% in a week and still leave the all-time-high market unmoved: short-covering mechanics do not change the marginal buyer's view of terminal value, only the speed at which prices catch up to it.

What the wire is not telling you

The dominant Western-financial framing this week treats the move as a return of risk appetite, a green light for the next crypto bull market. The implicit line, that the floor is in, is also the line being priced into the Polymarket round-number market.

A competing read is closer to what Polymarket's all-time-high market is implying. Bitcoin's prior peak was reached on the back of spot-ETF inflows, a Trump-cycle narrative, and a macro setup of anticipated Fed easing that the cited reporting does not show has fully materialised. The available source items do not specify net stablecoin issuance, futures open interest, or options skew, all of which would let a reader distinguish a short squeeze from a re-rating. WatcherGuru's $190 billion 24-hour market-cap print, on 20 August, is a tape signal, not a structural one.

That gap is the case for caution. A 20% weekly move with leverage still on the books is, mechanically, a setup in which the next move depends on which side of the squeeze the next marginal trade lands. The $80,000 test that CoinDesk flagged for 21 August is the first checkpoint. The Polymarket all-time-high market, at 9% as of 21 August, is the longer-dated checkpoint. The two are not the same question, and right now they are being priced by the same venue at very different odds.

Stakes and what to watch

If the round-number reclaim above $80,000 holds and ETF flows resume, the next leg of the Polymarket all-time-high market likely closes the gap with the $80,000 market, and the year-end narrative resets. If $80,000 fails in thin weekend liquidity, the short squeeze unwinds, and the same book that is giving a fresh high a 9% shot will probably give it less.

Three dates are worth pencilling in. First, the close of the trading week on 22 August 2026, which will confirm or deny the "best week in more than two years" framing. Second, the next CFTC public docket referencing Hyperliquid, which would convert the verbal commitment WatcherGuru reported on 19 August into a regulatory artefact. Third, the year-end resolution of Polymarket's all-time-high market, where 91% of the implied probability currently sits against the tape's evident enthusiasm. The market that calls it right will not be the one with the louder chart this Friday. It will be the one that called the floor before the squeeze started.

The Monexus desk framed this piece around the gap between Polymarket's two relevant markets rather than around the spot price itself. The wire line treated the week as a regime change; the book's own data does not, yet.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://x.com/Polymarket/status/2090919390657089782
• https://x.com/Polymarket/status/2090919249686512033
• https://cointelegraph.com/markets/bitcoin-seeks-support-near-77k-btc-gold-100-day-highs
• https://www.coindesk.com/daybook-us/2026/08/21/bitcoin-faces-usd80-000-test-as-thinner-weekend-liquidity-looms
• https://www.cnbc.com/2026/08/21/bitcoin-gain-cryptocurrency-investors-optimistic.html
• https://www.moneyweb.co.za/news-fast-news/bitcoin-on-track-for-biggest-weekly-gain-in-more-than-two-years/
• https://x.com/Polymarket/status/2090554675586093250
• https://x.com/Polymarket/status/2090541632349475104
• https://x.com/Polymarket/status/2090196609829052511
• https://t.me/watcherguru/14745
• https://t.me/watcherguru/14716
• https://t.me/watcherguru/14715
• https://t.me/watcherguru/14711
• https://t.me/watcherguru/14710
• https://t.me/watcherguru/14709
• https://t.me/watcherguru/14708
• https://t.me/watcherguru/14719
• https://poly.market/BPgMnNU
• https://poly.market/y91tGpF