More than 11.1 million Bitcoin (BTC), roughly 55% of all mined coins, cannot be linked to a known owner, according to an October ownership snapshot from Galaxy Research. The findings highlight how Bitcoin ownership remains difficult to identify despite growing institutional adoption through spot exchange-traded funds (ETFs), corporate holdings, and professional custody services.
Galaxy Research Finds 55% of Supply Unattributed
Galaxy Research estimates that approximately 11.1 million BTC out of roughly 20.1 million mined coins sit in addresses it cannot connect to an exchange, investment fund, government, or another known entity.
Alex Thorn, Galaxy's head of research, said the findings suggest that individual investors may still control a substantial portion of Bitcoin through self-custody, where holders manage their own private keys rather than relying on exchanges or financial institutions.
The remaining approximately 45% of mined supply has been attributed to identifiable holders or groups. These include cryptocurrency exchanges, investment funds, government wallets, and early-mining addresses associated with the Patoshi pattern.
The figures show that expanding institutional participation has not eliminated the challenges of identifying who controls individual Bitcoin addresses.
Why Bitcoin Ownership Is Difficult to Identify
Bitcoin's blockchain records transactions and wallet balances publicly, but addresses do not automatically reveal the identities of their owners.
Research firms identify major holders by analyzing transaction histories and linking addresses to entities whose ownership can be established through public records, disclosures, or other evidence.
However, a single individual can control multiple wallets, while an institution may distribute assets across numerous addresses or use third-party custody arrangements. These practices can make ownership attribution more complicated.
The distinction is important because an unattributed wallet does not necessarily belong to a retail investor. It simply means researchers have not established a reliable connection between the address and a known entity.
Unattributed Bitcoin Could Include Lost Coins
Galaxy's estimate does not mean that 11.1 million BTC have been permanently lost or are inaccessible.
Some coins may belong to holders who retain control of their private keys but have not publicly disclosed their holdings. Others could be held by unidentified institutions, private trading desks, or companies whose wallet addresses have not been linked to their names.
The total may also include coins that owners can no longer access because they lost their private keys or died without leaving recovery instructions.
Galaxy separately identifies approximately 1,123,658 BTC associated with the Patoshi mining pattern, which researchers link to early Bitcoin mining activity and commonly associate with Satoshi Nakamoto. That classification is based on historical blockchain analysis rather than independently confirmed real-world identity.
Wall Street's Bitcoin Holdings Continue to Expand
Institutional investors have become increasingly visible in Bitcoin markets through spot ETFs, corporate treasury strategies, and professional custody services.
BlackRock's iShares Bitcoin Trust is among the identifiable institutional holders, alongside other investment products and government-controlled wallets. Yet identifying these large holdings does not provide a complete picture of Bitcoin's ownership distribution.
The growth of regulated investment products has also created a distinction between direct ownership and investment exposure. ETF investors can gain exposure to Bitcoin's price without personally controlling the underlying coins or their private keys.
What the Findings Mean for Bitcoin's Ownership Landscape
Galaxy's research highlights the limits of determining Bitcoin ownership from public blockchain data alone. Although transactions are transparent, connecting wallet addresses to specific individuals or institutions requires additional information.
The 55% unattributed figure therefore should not be interpreted as a measure of permanently lost Bitcoin, nor does it establish how much of that supply is held by retail investors.
Instead, the findings illustrate how Bitcoin's original self-custody model continues to coexist with expanding institutional participation. As financial firms accumulate more coins, a substantial share of the mined supply remains outside the ownership categories researchers can confidently identify.
