Block Inc. has published a public proof-of-reserves dashboard showing control of approximately 28,355 BTC, a balance the company valued at about $2.2 billion. The disclosure separates customer-held Bitcoin from corporate treasury assets and gives outside observers a way to cryptographically verify balances directly against the Bitcoin ledger.
The move is meaningful because it pushes custody assurance beyond closed internal accounting. By publishing wallet addresses and signed messages, Block is giving users, auditors and market participants a more direct view into Bitcoin reserves and custody controls.
Public Verification Meets Operational Exposure
Block’s dashboard links public wallet addresses to the company and pairs those addresses with cryptographic signatures proving control at a specific timestamp. Observers can then compare those signatures and balances with on-chain Bitcoin data, creating a verification model that is both public and independently testable.
The setup rests on three core elements: wallet addresses under Block’s control, signed messages from those addresses and a live dashboard that aggregates balances while separating customer Bitcoin from corporate allocations. That structure makes the proof easier to inspect than a conventional reserves statement alone.
Still, transparency carries trade-offs. Address-level disclosure can reveal treasury-management patterns, settlement behavior and operational rhythms. The same data that improves public trust can also create intelligence for adversaries or competitors if it exposes custody strategy too precisely.
Block said the disclosures are supported by third-party audits, but the materials released with the dashboard did not identify the external auditor. That omission limits the traceability of the assurance chain and leaves open questions about audit scope, methodology and independence.
Cash App Limits and Bitkey Could Shift On-Chain Activity
Block reported that its 28,355 BTC total includes roughly $1.5 billion in customer Bitcoin held through Cash App and Square product flows, along with about $692 million in corporate treasury assets. During the first quarter of 2026, the company added 114 BTC to its corporate holdings, bringing its treasury close to 9,000 BTC.
The reserves disclosure also arrived alongside broader Bitcoin product changes. Block raised withdrawal limits for eligible Cash App customers to $10,000 per day and $25,000 per week, while also launching the Bitkey wallet as part of its Bitcoin ecosystem strategy.
Those changes could alter on-chain settlement patterns. Higher withdrawal limits and new wallet adoption may increase customer-initiated transactions, especially during periods of concentrated demand. That would make settlement throughput, mempool congestion and fee volatility important metrics to monitor.
For Block’s engineering and custody teams, the next challenge is balancing verifiability with operational security. The company must preserve enough transparency for outside parties to validate reserves while limiting unnecessary exposure of address-level behavior.
Block’s model sharpens a broader industry question: should proof-of-reserves be fully address-level, or should it move toward aggregated and privacy-preserving attestations that reduce operational sensitivity?
The most important follow-ups are clear. Block can strengthen the framework by naming the third-party auditor, publishing more detail on audit methodology and refining proof formats that preserve external trust without widening the attack surface. Market observers will also watch whether higher Cash App withdrawal limits and Bitkey adoption materially change Bitcoin transaction flows.
