Bitcoin OG holders — wallets whose coins have stayed dormant for more than five years — have doubled their spending activity since May. The group's 90-day average climbed to roughly 1,500 BTC as Bitcoin prices struggled to hold above the $80,000 level. Long-term holder spending is one of the most closely watched supply signals in on-chain analysis, because coins held through multiple cycles re-entering circulation can add sell-side pressure that shorter-term trader activity does not capture.

In a post on X, CryptoQuant analyst Darkfost highlighted the increase during the latest period of price consolidation, linking it to growing unease among holders. Even investors who have held through several market cycles have appeared more active than usual.

What the Rise in Bitcoin OG Spending Reveals

The Bitcoin OG spending average now stands about 56% above its June 24 reading of 962 BTC. That reading was the first below 1,000 BTC since November 2024, and activity at that point had reached its lowest level in nearly two years.

🗞️ OG Bitcoin Holders Are on the Move OG activity has intensified during this consolidation phase. The 90-day moving average of spent UTXOs (STXO) from holders who have held BTC for more than 5 years just climbed to 1,500 BTC. As a reminder, a UTXO (Unspent Transaction Output)… pic.twitter.com/8kXvJ06XKH — Darkfost (@Darkfost_Coc) September 5, 2026

The metric tracks spent outputs through a 90-day moving average rather than relying on daily totals alone. This approach smooths daily fluctuations and reduces the distorting impact of single transfers from large wallets, making it easier to identify genuine shifts in activity among long-term holders.

According to CoinMarketCap, Bitcoin was trading at $79,901 at the time of writing, up about 0.33% over the past 24 hours, with prices ranging from $78,723 to $81,370. Several sharp swings have left the cryptocurrency struggling to stay above $80,000.

Darkfost cautioned that rising Bitcoin OG activity does not prove holders are selling. Some transfers may simply reflect moves to safer storage following the Coldcard security incident, meaning the transactions could involve security changes rather than market exits. Distinguishing between these two cases is the key open question for interpreting the metric, and the destination addresses of future transfers are the main data point analysts can watch to separate security-driven movement from potential exchange-bound selling.

A spent UTXO records coins used as an input in a new transaction. Bitcoin's ledger tracks transaction outputs rather than account balances, and an output becomes spent when its owner moves the funds to another address.

Why Bitcoin OG Transfers Do Not Always Signal Selling

A holder can transfer coins to an exchange in preparation for a possible sale, but other reasons include changing custodians, combining outputs, or spreading funds across multiple wallets. Replacing an outdated security setup also creates an on-chain transaction without proving any sale took place.

Destination data can help explain a Bitcoin OG transfer when an address carries a known label. An address linked to an exchange or trading firm offers far more context than an unknown destination — although even an exchange deposit does not establish that the owner actually sold.

Recent transfers illustrate the limits of dormant-wallet data. Over a 10-day period in August, six wallets transferred 553.59 BTC valued at $40.15 million. These wallets had been inactive for roughly 12 to more than 15 years before the transactions.

🌚 Awakened — dormant 14+ years 40.00 BTC ($3.14M) untouched since first received 2012-05-28 (14.2y ago) — just moved in block 964127 Address: 1MZX6ExdDzWefGbD6Dc4bShdBRoNA3ijLF Sender Attribution: none in our DB Recipient Attribution: Boerse Stuttgart Digital 💰 Realized PnL:… — Galaxy Research (@glxyresearch) August 26, 2026

Of these transfers, five went to wallets with no associated exchange link. The remaining wallet moved 40 BTC to an address tagged Boerse Stuttgart Digital. The company offers custodial and trading facilities, and it remains unclear whether the owner was selling, changing custodians, or restructuring the holding.

Why Coldcard Users Had to Move Their Bitcoin

A separate set of transfers involved 28 dormant wallets that moved 1,314.41 BTC on Aug. 20. More than 1,200 BTC of that came from wallets created in 2014. The blockchain recorded these transactions, but the intent behind them remains unknown.

The Coldcard incident provides further context for these Bitcoin OG movements. A firmware bug allowed seed phrases generated by compromised hardware wallets to be revealed, and owners were advised to generate a new seed and move their holdings to protect their funds. Installing the corrected firmware did not restore credentials generated by the compromised software, which is why affected owners had no choice but to move their coins. Some of the associated network activity was connected to this remediation effort, while some was related to attacks on the exposed wallets. The incident also illustrates a broader point for on-chain analysts: security events can create large, coordinated waves of long-dormant supply movement that look identical to holder selling on raw transaction data, which is why attribution work of the kind done by firms like Galaxy Research has become an important complement to spending metrics.

What Could Push Bitcoin Theft Losses to 2,055 BTC

According to K33 Research, almost 890,000 BTC was moved within seven days in early August — the highest seven-day active supply reported in 2026. This occurred while Bitcoin was trading in a narrow price range; the 30-day range became one of the narrowest for Bitcoin since 2023, meaning the surge in network activity happened without any price breakout. These figures covered active supply, whereas the Bitcoin OG measure captures only coins that were inactive for more than five years.

According to Galaxy Research, 1,596 BTC was stolen across the three waves of attacks reported by Aug. 5, involving roughly 7,300 addresses. The firm said total losses could reach 2,055 BTC if a fourth wave is confirmed — an estimate worth approximately $130 million at the time. Galaxy also noted that around 90% of the stolen Bitcoin had remained in place after the initial attacks. Whether a fourth wave materializes, and whether the stolen coins begin to move in volume, are the developments that would most directly affect how much of the recent long-term-holder activity reflects theft-related rather than voluntary transfers.

This article contains market analysis and price references. These are not guarantees. Crypto markets are volatile. Always do your own research. Not financial advice.