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Bitcoin OG coins are moving at twice the pace they were in May. Holders who sat on their BTC for more than five years now spend about 1,500 coins a day on a 90-day average, according to CryptoQuant analyst Darkfost, and the timing tells you what kind of market this is: a flat one, where even the patient are getting restless.
The number matters because of how it got here. On June 24, this cohort's 90-day spent-output average had fallen to 962 BTC, the first sub-1,000 reading since November 2024. Two and a half months later it sits 56% higher. Darkfost links the pickup to unease during consolidation. Even investors who have held through multiple cycles are touching their coins again, though the data cannot tell you why any single transaction happened.
"OG activity has intensified during this consolidation phase. The 90-day moving average of spent UTXOs from holders who have held BTC for more than 5 years just climbed to 1,500 BTC." — Darkfost (@Darkfost_Coc), September 5, 2026
1,500 Bitcoin OG coins a day is noise, not a stampede
Keep the figure in context. In earlier activation peaks, this cohort moved more than 10,000 BTC a day in May 2024, more than 30,000 in February 2025, and a single day above 142,000 in September 2025. Against that history, 1,500 coins is a murmur. It is also a 90-day moving average, which smooths spikes; one whale transfer can nudge it for months. If old coins were exiting en masse, you would see this number with another zero attached, and you would see it fast.
The more interesting question is what a spent output actually records. A UTXO counts as spent whenever its owner moves it: to an exchange, to a new custodian, into a consolidated wallet, or out of a compromised hardware device. Movement is not selling. Recent dormant-wallet activity proves the point. Over 10 days in August, six wallets dormant for 12 to 15 years moved 553.59 BTC worth $40.15 million. Five transfers went to unlabeled addresses with no exchange connection. Only one, 40 BTC, went to a custody provider, Boerse Stuttgart Digital. On Aug. 20, another 28 dormant wallets moved 1,314.41 BTC, including more than 1,200 from addresses created in 2014. The ledger shows the transfers. The intentions stay private, as they should.
The Coldcard mess is polluting the Bitcoin OG data
There is a specific reason to distrust the cohort's spending metrics right now, and it is not sentiment. The Coldcard firmware flaw exposed seed phrases on affected hardware wallet models, and owners were told to create new seeds and move their holdings, because patched firmware could not fix credentials the old software had already generated. That migration consumes old UTXOs by definition. If affected wallets held five-year-old coins, seed migrations show up here as OG spending even though nobody sold anything.
The scale was real. K33 Research counted nearly 890,000 BTC moved over seven days in early August, the highest seven-day active supply of 2026, while Bitcoin traded inside one of its narrowest 30-day ranges since 2023. Galaxy Research confirmed 1,596 BTC stolen from about 7,300 addresses across three attack waves by Aug. 5, with losses estimated as high as 2,055 BTC, close to $130 million at the time. Attackers draining wallets and owners fleeing to safety look identical in a spent-output chart. Neither is a conviction sale.
Where does that leave you? Bitcoin trades near $79,600, down about 1.8% over 24 hours, trapped again below $80,000 after a range that ran from $78,723 to $81,370. The OG uptick is worth watching precisely because of what it would mean if it keeps climbing through the noise: old coins moving into exchange deposits, not just new addresses. That distinction, and only that, would mark distribution. The $293B lawsuit wallet moving $3.1M earlier this month was a curiosity; a sustained rise in old-coin deposits would be a signal. Until then, treat 1,500 BTC as what it likely is: Coldcard housekeeping plus mild boredom in a market that Fidelity still refuses to call a recovery, waiting on the same CPI print everyone else is. The real tell comes Sept. 11, and the OG wallets will not be the only ones watching it.
