@_Checkmatey_
El analista on-chain más conocido de Bitcoin y uno de los pocos que publica una postura fechada cada semana. Construye las métricas en lugar de citarlas, y dice en voz alta cuándo el consenso se equivoca, que es de lo que está hecho casi todo este historial de 2026.
En resumen. James Check — “_Checkmate” — es fundador y analista jefe de Checkonchain, y antes construyó y dirigió el equipo de analistas de Glassnode, donde escribió y produjo The Week On-chain. Exingeniero geotécnico, lee Bitcoin a través del coste base, las ganancias y pérdidas realizadas y el comportamiento de los tenedores, no de las figuras del gráfico, y es explícito en que no da señales de trading ni llamadas intradía. Durante el mercado bajista de 2026 se puso dos veces del lado impopular —rechazando los objetivos bajistas de $40k y de la parte media-baja de los $40k cuando ambos eran consenso— y las dos veces el mercado le dio la razón. También se equivocó a mediados de marzo con una lectura de fuerza relativa, justo antes de una caída del 19.7%.
Según su propio relato, Check “started his career as a civil (geotechnical) engineer, specialising in the design of tunnels, basements, foundations, and mines”, y trasladó esa disciplina —grandes volúmenes de datos, incertidumbre, probabilidades— a Bitcoin desde 2019. Fue de los primeros en formalizar el análisis on-chain como disciplina, inventando métricas y marcos que hoy son estándar del sector, y construyó y dirigió el equipo de analistas de Glassnode de 2021 a 2024, donde fue editor principal, autor y productor de The Week On-chain. Es coautor del marco Cointime Economics junto a David Puell, de ARK Invest.
Desde que dejó Glassnode dirige Checkonchain —un boletín en Substack con más de 30,000 suscriptores, un conjunto público de gráficos y una rama de consultoría—, escribiendo dos veces por semana con su propia firma. Sus principios declarados son inusualmente restrictivos para el género: sin señales de trading, sin llamadas intradía, sin intentar acertar techos ni suelos exactos, algo que llama “a fools errand and a time sink”. Describe su propio trabajo como “a balance between James Check the Analyst focusing on providing value for James Check HODLer.” También es tajante sobre los límites: “No model is perfect, and no analyst will ever predict the future correctly every time.” Aquí eso no es retórica: su lectura del 16 de marzo de 2026 de que Bitcoin era “the fittest player on the pitch” fue seguida por una caída del 19.7%, y está graficada abajo como fallo en lugar de omitida.
Sources: x.com/_Checkmatey_ (posts captured verbatim via fxtwitter/X syndication) · newsletter.checkonchain.com (publicly-served text of dated editions) · checkonchain.com/about · cointelegraph.com · coindesk.com — full corpus re-fetched live by scripts/cm_fetch.py and asserted by scripts/cm_qcheck.py
On-chain primero, guiado por el comportamiento, solo Bitcoin. Check trabaja desde el coste base (precio realizado, coste base de tenedores de corto y largo plazo, media móvil de 200 semanas), las ganancias y pérdidas realizadas, la edad de las monedas y la oferta en beneficio, y luego los lee como psicología del inversor en vez de como señales. Sus dos ideas ordenadoras son el dolor de precio (la caída brusca que expulsa a los tenedores) y el dolor de tiempo (el lateral agotador que expulsa al resto); califica un mercado bajista por cuánto se ha pagado de cada uno. Opera deliberadamente en probabilidades y percentiles: su refutación del caso bajista de $40k fue que sería una desviación del percentil 0.4, no que fuera imposible. La debilidad es la otra cara: un marco construido sobre plazos de meses a años no dice casi nada sobre las próximas semanas, y él mismo lo reconoce.
Estructuralmente alcista en Bitcoin y, durante todo 2026, sistemáticamente menos bajista que el consenso, pero su optimismo se expresa como acumulación a lo largo de meses, no como objetivos de precio. Sobre altcoins no tiene ninguna opinión: Checkonchain es solo Bitcoin.
Eleven dated calls inside the CoinGecko price window, all first-person: two posts from @_Checkmatey_ captured verbatim from X, eight dated editions of his own Checkonchain newsletter, and one Cointelegraph interview. An honest caveat on the newsletter eight — those editions are paid, and what is charted is the portion Substack serves publicly (the opening section, which is where he states the week's thesis). The paywalled remainder is not quoted and may carry qualifications this page cannot see. The shape of the record: he was right on the big structural questions and wrong on a short-term one. His 24 February accumulation call named the 200-week moving average at $58.5k; the window's actual low was $58,566, 0.1% above it. He rejected the $40k bear case in April and the mid-to-low $40ks consensus in July, and Bitcoin never went below $58,566. The single red is a mid-March relative-strength read that preceded a 19.7% fall. His $82k “The Bears Last Stand” line broke on 22 September, as he had said it would have to for the bear case to die. Two calls are still open: his September claim that the cycle bottom is already in, and an October warning that a correction is coming.
“At some point, we will get a correction, and at that time, all the sidelined folks who panic buy into the next high will be the ones panic selling at the local low.”
With Bitcoin at $86,490 and the recovery “just isn’t giving sidelined investors any dips to buy”, he warned that a correction would come and that whoever panic-bought the next high would panic-sell the local low. No close since has been higher: BTC slid to $81,686 (−5.6%) by 9 October and is $82,171 (−5.0%) now. That is a pullback rather than a deep correction so far, and he gave no level or timing, so this is logged open.
SourceStill Stair-Stepping Higher — Checkonchain newsletter, 5 Oct 2026↗ newsletter.checkonchain.com“The Bitcoin price looks coiled up across all time-frames, and yet there are still people trying to short it into the prophesied Q4 low. Good luck with that!”
Three days after his cycle-bottom call he said Bitcoin “wants to take even more bears out to the woodshed”, and mocked the shorts positioning for a Q4 low. The next daily close was $86,597 (+6.7%), and three days later he wrote that the rally had “squeezed a mountain of short traders from their positions”. BTC has not closed below his $81,169 since and is $82,171 (+1.2%) today — most of the squeeze has been given back, but the bears he was talking about did get taken out: played out.
SourceThe Coiled Serpent — Checkonchain newsletter, 21 Sep 2026↗ newsletter.checkonchain.com“What’s the difference between $58,000 and $59,000 or $60,000? Nothing,”
His most explicit claim of the window: the cycle low was the $58,000 time-pain capitulation of June–July, not an October low the four-year-cycle crowd is waiting for. BTC was $76,371 when he said it and has not closed lower since, peaking at $86,597 (+13.4%) on 22 September and standing at $82,171 (+7.6%) today. Three weeks is nothing against a cycle-bottom claim, so this is logged open — but the level he named, $58,566 on 1 July, is still the floor.
SourceBitcoin cycle bottom may already be in at $58K, says analyst James Check (Cointelegraph, 18 Sep 2026)↗ cointelegraph.com“In my opinion, the equivalent level for The Bears Last Stand is $82k, which is a stone’s throw away, and I believe it will be very difficult to justify a bear case should it break.”
A rare precise level from a man who avoids them, and the mirror of his October 2025 $95k “bulls last stand”. BTC was $77,658; it dipped −2.7% to $75,590 on 16 September, then broke the line on 22 September with a close of $86,597 (+11.5%). Two days later he wrote that Bitcoin had “convincingly re-established a weekly scale uptrend by clearing the May high at $83k”. The break he said would make a bear case very hard to justify happened, and the bears who were short got squeezed — played out. BTC has since given much of it back to $82,171 (+5.8%), right at his line, so the retest is live; a slide back under it would reopen the question.
SourceThe Bears Last Stand — Checkonchain newsletter, 31 Aug 2026↗ newsletter.checkonchain.com“This scenario is not my base case view, and not what my analysis of the data suggests is the most likely setup.”
Writing against “at least half a dozen bear market reports” that all pointed to a final low in the mid to low $40ks, he refused the consensus — while spending the piece stress-testing his own thesis against a $45k Bitcoin. The best-timed call on this page: BTC was $62,279 and has never closed lower since (low after = the day itself), running +39.0% to $86,597 on 22 September and standing at $82,171 (+31.9%) today. The $40ks never came within $16k.
SourceWhat If I’m Wrong? — Checkonchain newsletter, 14 Jul 2026↗ newsletter.checkonchain.com“These are the conditions we historically see as we approach the pointy end of a bear market, where hopelessness peaks, and the maximum number of people start to truly believe the asset is never coming back.”
Total apathy, dead volumes, gutter sentiment — he read it as the end of the bear rather than the middle. BTC was $63,937, fell a further −8.4% to the window low of $58,566 eight days later, then never looked back: +35.4% to $86,597 on 22 September, and $82,171 (+28.5%) today. He called the chapter, not the wick, which is exactly what he says he tries to do.
SourceThe Pointy End — Checkonchain newsletter, 23 Jun 2026↗ newsletter.checkonchain.com“For the folks who missed the lows, many are about to buy far too much at the next local high, and get smoked once again on the pullback.”
With the bulls “running victory laps” and BTC at $81,437, he told the people who had missed the bottom not to chase. Four days later Bitcoin closed at $82,018 (+0.7%) — a close it would not beat again for more than four months — and from his warning it went on to fall −28.1% to $58,566 on 1 July. Anyone who bought that local high waited until 22 September to see it again. BTC is $82,171 today, +0.9% from the day he warned.
SourceSweaty, Sweaty Bears — Checkonchain newsletter, 7 May 2026↗ newsletter.checkonchain.com“consider that on a mean reversion basis, averaging relative to nine anchors (a mix of technical, onchain, trend, fast, slow etc), it is a Q 0.4 event. Lower than $2 Bitcoin in 2011.”
Not a target — a probability. Against the loudest bear number of the spring he put $40k in the 0.4th percentile of all daily deviations across nine anchor models, adding “there’s no zero probability in markets, but this would be a near-unprecedented outcome”. BTC was $76,326; its deepest close since was $58,566 (−23.3%) — painful, and still $18.5k above the level he ruled out. It stands at $82,171 (+7.7%).
𝕏 Post@_Checkmatey_ on the $40k bear case — 22 Apr 2026 (cited by CoinDesk, 25 Apr)↗ x.com“There isn’t much value in sugar coating it, as the world is in a very tricky spot, and the odds that conditions improve before they get worse…are not great.”
Two weeks after the miss below, he turned cautious with oil above $100 and BTC under $65k, and went looking for where the time-pain capitulation would bottom. It got worse first, as he said: from $65,947 BTC fell −11.2% to $58,566 by 1 July before turning and running to $86,597 (+31.3%) on 22 September. It sits at $82,171 (+24.6%) — the sequence he described, in the order he described it.
SourceTime Pain Usually Ends With A Bang — Checkonchain newsletter, 30 Mar 2026↗ newsletter.checkonchain.com“Today’s post will be a study of why this may be the case, and my read on why Bitcoin appears to be the fittest player on the pitch right now.”
The one that went against him. Bitcoin was up 5% on the month against a risk-off tape, and he read that relative strength as a positive signal with BTC at $72,934. Instead it led the way down: a −19.7% slide to $58,566 by 1 July, and it took until August to recover. BTC is $82,171 (+12.7%) now, so the position came good — but the next three months went the other way, and this is logged as a miss.
SourceBitcoin Up, Everything Else Down? — Checkonchain newsletter, 16 Mar 2026↗ newsletter.checkonchain.com“If you're not actively accumulating Bitcoin at this stage, then when?”
Posted on 24 February — a day that has since rolled out of this chart's price window, so the chart now anchors at $70,839 on 14 March. Mid-panic, he said “Price pain is largely behind us imho, however time pain likely remains” and told readers to dollar-cost-average for six months rather than hunt the wick — while explicitly warning that lower lows usually come first. Both halves landed. He put the 200-week MA at $58.5k; the window's actual low was $58,566 on 1 July, 0.1% above it. From the anchor that low was −17.3%; Bitcoin then ran to $86,597 (+22.2%) on 22 September and is $82,171 (+16.0%) today. The verdict rests on the level he named, which the moving anchor cannot change.
𝕏 Post@_Checkmatey_ on the bottom formation — 24 Feb 2026 (cited by CoinDesk the same day)↗ x.comLos resultados son nuestra lectura de su posición declarada frente a cierres diarios reales de CoinGecko, no su propia puntuación. Cada dólar y cada porcentaje de las fichas procede de la misma serie con la que se dibujan los gráficos. Check no publica señales de trading ni objetivos de precio, así que aquí se juzgan tesis direccionales o condicionales por lo que hizo el precio después; las afirmaciones de horizonte largo cuyo nivel ni siquiera se ha aproximado quedan como abiertas en lugar de contarse como aciertos.
Checkonchain es un negocio de research por suscripción, y Check es inusualmente explícito sobre lo que vende y lo que no. No hay token, no hay grupo de señales, no encontramos ningún acuerdo de afiliación con exchanges, pero el propio muro de pago es el incentivo que conviene conocer, porque la apertura gratuita de cada carta tiene que hacerte querer el resto.
Checkonchain en Substack: más de 30,000 suscriptores repartidos entre un nivel gratuito, uno de pago (análisis escrito y en vídeo dos veces por semana más sesiones de Q&A) y un nivel superior “Orange” que añade un informe mensual en PDF de formato institucional, una llamada mensual con James, una llamada individual de presentación y correo prioritario.
Un conjunto público de gráficos en charts.checkonchain.com, además de consultoría y formación para empresas y particulares que integran analítica on-chain en su research.
Su propia página de principios afirma que Checkonchain “not provide trading signals, and intra-day calls of any form” y que no intenta acertar techos ni suelos exactos, así que nada de lo que hay aquí se vende como punto de entrada. Lea las llamadas de esta página como opinión fechada, que es todo lo que él sostiene que son.
“Price pain is largely behind us imho, however time pain likely remains.”
24 Feb 2026 · el marco sobre el que descansa todo el historial de 2026“No model is perfect, and no analyst will ever predict the future correctly every time.”
14 Jul 2026 · dicho en la pieza donde sometió su propia tesis a un test de estrés“Look for the evidence, not the calendar.”
18 Sep 2026 · contra el timing del ciclo de cuatro añosCitas tomadas de sus propias fuentes públicas; son opiniones expresadas, no recomendaciones.
There is no public video library to link — Check's video updates sit behind the Checkonchain paywall, and his free output is X posts and the opening section of each newsletter edition. That is why every call above is a timestamped post or a dated letter rather than a clip. The editions behind eight of the eleven cards are public at the links on those cards.
Un analista on-chain australiano, fundador y analista jefe de Checkonchain y una de las personas que construyeron la disciplina del análisis on-chain de Bitcoin. Empezó como ingeniero civil especializado en geotecnia, pasó a los datos de Bitcoin en 2019 y construyó y dirigió el equipo de analistas de Glassnode de 2021 a 2024, donde escribía The Week On-chain. Publica como @_Checkmatey_.
No está verificado públicamente. Sus ingresos vienen del negocio de suscripción de Checkonchain (niveles del boletín, gráficos y consultoría), no de operaciones publicadas. Ignore cualquier cifra concreta: ninguna está confirmada.
Deliberadamente, casi nunca. Sus principios publicados dicen que Checkonchain no ofrece señales de trading ni llamadas intradía, y que no intenta acertar techos ni suelos exactos. Lo que sí publica es una tesis direccional fechada cada semana, que es lo que grafica esta página.
Mostly, on the structural questions. He called the February accumulation zone and named the 200-week moving average at $58.5k against an eventual low of $58,566; he rejected both the $40k and the mid-to-low-$40ks bear targets, neither of which came close. He also got a mid-March relative-strength read wrong, right before a 19.7% fall, His $82k “The Bears Last Stand” line broke on 22 September. Eight played out, two are open, one went against.
Check lee Bitcoin por lo que los tenedores hicieron de verdad, no por cómo se ve el gráfico, y juega en meses, no en minutos. ¿Cuánto se parece su instinto? Mídalo de verdad con un Trader Passport.
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Análisis informativo y educativo basado estrictamente en materiales públicos: sus propias publicaciones en X, la parte servida públicamente de ediciones fechadas del boletín Checkonchain y coberturas fechadas de terceros, todo enlazado en cada llamada. La parte de esas ediciones tras el muro de pago no se cita ni se evalúa aquí. No es asesoramiento financiero ni de inversión. Las cifras son aproximadas y cambian constantemente. Spotted an error, or are you James? Enviar una corrección →
Cuentas verificadas · Fuentes citadas arriba · Metodología de puntuación · Actualizado 9 October 2026
