Crypto
29 Apr 2026
Read 12 min
Block proof-of-reserves Q1 2026 How to Verify Holdings *
Block proof-of-reserves Q1 2026 shows 28,355 BTC disclosed and lets anyone verify on-chain holdings.
Block proof-of-reserves Q1 2026 confirms that Block held 28,355 BTC as of March 31, 2026, with third-party validation and on-chain signatures for public checks. About 19,357 BTC were customer assets and 8,997 BTC were corporate holdings. The report explains how anyone can verify balances themselves and why reserves are “actively controlled,” not just historical.
Block Inc., the fintech company led by Jack Dorsey, opened its books for the first quarter and showed its bitcoin on chain. The company said it held 28,355 BTC at the end of March 2026. Independent auditors reviewed the report. The company also published signed messages so the public can verify the holdings on Bitcoin’s ledger.
The total stash was worth about $2.2 billion at quarter-end prices. Of that, customer assets made up 19,357 BTC, or around $1.5 billion. Corporate holdings were 8,997 BTC, or about $692.3 million. The assets span Block’s corporate treasury and two units, Square and Cash App.
The company’s message was simple: Do not just trust. Verify. Block says anyone can confirm the addresses and the signatures on chain. It also says the reserves are “actively controlled,” which means the keys used for the snapshot are still in use or provably under Block’s control, not just from old, inactive wallets.
Total holdings: 28,355 BTC across corporate, Square, and Cash App.
Customer assets: 19,357 BTC held for users.
Corporate assets: 8,997 BTC held by Block.
The company ties these balances to specific addresses and signed messages. Third-party auditors confirmed the report. The point is to let the public add up the balances and match them to the stated total as of the snapshot date. This is meant to reduce blind trust after a year of stress in the crypto sector.
Go to Block’s proof-of-reserves page and get the latest snapshot details, including the list of addresses and signed messages.
Copy one of the listed addresses and paste it into a trusted Bitcoin blockchain explorer to view the current balance and transaction history.
Use a “verify message” tool (in Electrum, Sparrow, or other wallets) to confirm that Block’s public address really produced the posted signature.
Repeat the check for multiple addresses and add up the balances. Compare your total with the report’s stated total of 28,355 BTC for the Block proof-of-reserves Q1 2026 snapshot.
Check the snapshot time. Prices move. The dollar value at quarter end may differ from what you see today.
If Block publishes a liabilities proof or a customer balance attestation, read it and confirm that customer BTC is backed 1:1 by on-chain assets.
Focus on control: A valid signature from a listed address shows Block holds the keys now.
Watch address changes: Companies rotate wallets for security. New addresses may appear in later snapshots.
Mind the UTXO model: Bitcoin balances can sit across many outputs. Explorers show totals, but movements are normal.
Note timing gaps: If you verify days after the snapshot, balances may have shifted due to normal operations.
Check auditor notes: Third-party confirmations add confidence to your own checks.
Security visibility: Large balances linked to one brand can attract attention. Firms respond with cold storage, multi-signature controls, and strict access rules.
Operational safety: “Actively controlled” does not mean “hot.” Companies can still keep most coins offline while proving control.
User privacy: Good proofs should not expose individual customer balances. They should show total assets and control without leaking personal data.
Dynamic risk: Attackers cannot spend funds without keys. Public data alone does not let them move coins, but it may inform phishing or social engineering attempts. Users should still be cautious.
Updates to the proof: Look for regular snapshots and fresh signatures to keep the trail current.
Liabilities disclosures: The best proofs reconcile assets and customer claims. Investors will want more detail here.
Wallet product traction: Block’s Bitkey and Cash App bitcoin features may drive more on-chain flows and revenue.
Earnings catalysts: Any guidance on bitcoin-related income, spreads, or treasuries could move the stock.
Security posture: Expect Block to refine how much it reveals each quarter while balancing risk and transparency.
The Block proof-of-reserves Q1 2026 report is a clear move toward open accounting on bitcoin. It shows assets, splits corporate and customer coins, and gives users tools to check the math. It does not solve every risk, and it should grow to include more on liabilities. But it raises the bar and invites the public to verify, not just believe.
For users, this means you can confirm that customer BTC sits on chain and under live key control. For investors, it signals discipline in treasury and risk management while keeping crypto optionality alive across Square and Cash App. For the industry, it is another step toward simple, verifiable trust. If Block keeps publishing and improving these checks, the Block proof-of-reserves Q1 2026 may become a model that others follow.
(Source: https://www.theblock.co/post/399123/block-q1-bitcoin)
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Block proof-of-reserves Q1 2026: What’s in the report
The Block proof-of-reserves Q1 2026 report states three core facts:Corporate vs. customer holdings
Block separates corporate funds from customer coins. That gives users a clear view. It makes it easier to see that the company is not using customer coins for other bets. A clean split also helps auditors trace flows and test control over keys.“Actively controlled” wallets
The report says reserves are “actively controlled,” not just “historically observed.” This matters. A firm can point to giant old addresses to look big. But if it cannot sign with those keys today, the assets may not be real or available. Active control means Block can still move coins from those wallets if needed.Why this proof matters now
Since the FTX collapse, many crypto firms publish asset proofs to rebuild trust. Users want to know where the coins are and who controls them. Proof-of-reserves can help because it uses the open ledger to show balances. It also uses digital signatures to prove who holds the keys. Still, proof-of-reserves has limits. It shows assets, not full liabilities. Without a clear claim of all debts and customer balances, a firm could look solvent on the asset side and still have a shortfall. The best reports pair asset proofs with a verified snapshot of customer liabilities. Some critics also warn about security. In May 2025, Michael Saylor said on-chain proofs can expose firms to risks, by linking large wallets to a single name. Attackers might watch those wallets. Companies weigh that risk against the trust they gain from public proofs.How Block says verification works
Block’s report uses on-chain signatures. That means the company posts messages signed by private keys that control the listed wallets. Anyone can take those messages and confirm the signatures match the public addresses. People can also check the balances of those addresses on a blockchain explorer. The method lets users check both control (via signatures) and balances (via the ledger). It also lets auditors repeat the test at any time, not just once.Step-by-step: Verify the holdings yourself
Practical tips as you verify
Security and privacy trade-offs
Publishing addresses and signatures improves transparency. It also carries trade-offs.Numbers in market context
The bitcoin total, at about $2.2 billion on March 31, highlights Block’s deep tie to the asset. Cash App supports bitcoin buying and selling. Square serves merchants who watch crypto trends. Corporate holdings add extra exposure. Investors will get more color on May 7, when Block reports first-quarter earnings. In Q4 2025, the company posted net income of $115.7 million, down from $1.9 billion in the same quarter of 2024. Results swing with macro trends, card volumes, and bitcoin activity across its ecosystem. On the day Block published the proof, the stock closed 0.49% lower at $71.28. Shares were still up 24.9% over the prior month. Part of that move tracks broader interest in crypto and payments. It also reflects bets on Block’s push into hardware wallets and bitcoin tools.What to watch next
FAQ
Q: What did Block disclose in its proof-of-reserves report for Q1 2026?
A: In the Block proof-of-reserves Q1 2026 report, Block disclosed it held 28,355 BTC as of March 31, 2026, worth roughly $2.2 billion at quarter-end prices. The report was confirmed by third-party auditors and includes signed messages so the public can verify holdings.
Q: How were customer and corporate bitcoin holdings split in the report?
A: About 19,357 BTC (around $1.5 billion) were held on behalf of customers, while corporate holdings totaled 8,997 BTC (about $692.3 million). Those balances cover assets across Block’s corporate treasury, Square, and Cash App.
Q: How can anyone verify the addresses and balances Block published?
A: Block published lists of addresses and corresponding signed messages so anyone can check balances on a Bitcoin blockchain explorer and verify signatures with a verify-message tool such as Electrum or Sparrow. Users should repeat the check for multiple addresses and add up balances to compare with the reported 28,355 BTC.
Q: What does the report mean when it says the reserves are “actively controlled”?
A: It means the keys used for the snapshot are still in use or provably under Block’s control, rather than pointing to old, inactive wallets. Active control indicates Block can sign messages from those addresses and move coins if needed, not merely cite historical balances.
Q: What are the main limitations or risks of proof-of-reserves noted in the article?
A: Proof-of-reserves demonstrates on-chain assets but does not, by itself, prove liabilities or a full 1:1 backing of customer claims, so a firm could still have a shortfall on the liability side. The article also notes security and privacy trade-offs, including concerns that linking large wallets to a firm can attract attention and potential risks.
Q: Did third-party auditors confirm Block’s snapshot and why does that matter?
A: Yes, independent auditors reviewed and confirmed the snapshot described in the report, providing an external check on the on-chain evidence. That validation allows auditors and users to repeat the verification steps using the posted addresses and signed messages for greater confidence.
Q: What practical steps does the report recommend for users who want to verify holdings themselves?
A: The report advises starting at Block’s proof-of-reserves page to retrieve the snapshot details, then checking listed addresses on a trusted blockchain explorer and using a verify-message tool to confirm signatures. It also recommends adding up multiple addresses, checking the snapshot time because dollar values change, watching for wallet rotations and UTXO complexities, and reviewing auditor notes or any liabilities attestation.
Q: What should investors and users watch next after the proof release?
A: Watch for regular snapshot updates, any published liabilities disclosures that reconcile assets with customer claims, and traction for wallet products like Bitkey and Cash App bitcoin features. Block’s first-quarter earnings on May 7 should also provide more color on bitcoin-related income and company results.
* The information provided on this website is based solely on my personal experience, research and technical knowledge. This content should not be construed as investment advice or a recommendation. Any investment decision must be made on the basis of your own independent judgement.
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