Arkham Found No Sign of Selling After 80,000 Dormant Bitcoin Moved

Arkham Intelligence said on July 5, 2025 that the coordinated transfer of 80,000 bitcoin from eight long-dormant wallets showed no contemporaneous indication of a sale. The analytics company suggested the movements could represent an address upgrade because most of the coins had shifted from legacy addresses beginning with “1” into newer addresses beginning with “bc1q.”

The assessment mattered because the transfers involved an unusually large concentration of early bitcoin. The source wallets had received their coins in April or May 2011 and had remained inactive for more than 14 years. Their reactivation raised an immediate market question: was an early holder preparing to sell billions of dollars of BTC, or merely changing custody arrangements?

Arkham’s July 5 statement supported only the narrower interpretation that no sale was visible at that stage. A transfer to a fresh wallet does not itself identify the beneficial owner, prove that ownership changed or reveal what the controller intends to do next.

What the blockchain established

The eight transfers were completed on July 4, 2025. Each source address moved approximately 10,000 BTC, producing a combined total slightly above 80,000 BTC once the wallets’ small additional balances were included. One preserved transaction moved approximately 10,000.01 BTC from the legacy address beginning “12tLs” to a native-SegWit destination in Bitcoin block 903,916.

CoinDesk’s July 5 report said Arkham attributed the eight wallets to a single entity based on their history and coordinated movement. That was an analytics attribution, not a disclosed identity. No person or company had publicly claimed the wallets by the time of the report.

The destination format supplied a plausible operational explanation. Native-SegWit addresses generally permit more fee-efficient transactions than the older pay-to-public-key-hash addresses used by the source wallets. The format change was consistent with wallet modernization, but consistency is not proof of motive. The public ledger recorded where the coins moved, not why.

Arkham also observed that the BTC initially remained in eight new addresses rather than proceeding directly to wallets it identified as exchanges. Its conclusion that there was no indication of selling was therefore a description of the visible transaction path as of July 5, not a guarantee against a later transfer or sale.

Measuring the event-day value

CoinMarketCap’s historical snapshot for July 5 placed Bitcoin at $108,231.18. Multiplying that point-in-time aggregated price by 80,000 BTC gives approximately $8.66 billion, a Coinburn calculation that aligns with Arkham’s rounded $8.6 billion description.

The calculation is a mark-to-market estimate, not proceeds. CoinMarketCap aggregates prices across covered venues, Bitcoin trades continuously without an official global close, and the entire position could not necessarily have been sold at the displayed price. Fees, slippage, venue liquidity and execution timing would affect any realized amount.

CoinMarketCap’s snapshot showed Bitcoin up 0.18% over its preceding 24-hour measurement window. That modest change does not establish that the transfers had no market effect; it only shows that the aggregated price had not undergone a comparable percentage collapse by the snapshot. Nor does timing establish that the wallet activity caused any observed price movement.

Later context

On July 25, Galaxy Digital announced that it had completed the sale of more than 80,000 BTC for what it called a Satoshi-era investor. That later disclosure changed the broader context, but Galaxy did not identify its client or publish the source addresses. It therefore should not be treated as proof that Arkham knew on July 5 that these specific coins would be sold.