Block Unveils Bitcoin Proof of Reserves, Opens 8,883 BTC Holdings to Verification

Jack Dorsey-led payments company Block has long held Bitcoin as a corporate asset while offering trading and payment services through Cash App and Square. Its adoption of proof of reserves allows the public to verify assets through on-chain signatures, addressing heightened industry concerns about the custody and transparency of customer assets.

Block published Bitcoin proof-of-reserves data in 2025 covering its corporate holdings, Cash App and Square, allowing anyone to verify the assets independently. The data showed that Block held 8,883 Bitcoin, valued at about $680 million at the time of the announcement. The related Bitcoin assets were worth $2.2 billion according to the latest report, with customer assets accounting for nearly 70%.