TERMS OF SERVICE
Terms for using BlockAck
BlockAck provides non-custodial payment software. We do not receive, hold, or forward customer funds on behalf of merchants. These terms govern accounts, APIs, dashboards, monitoring, callbacks, and related services. By creating an account or using the service, you agree to them.
Legal documents are provided in English. The English text is the official version.
Effective and last updated: October 22, 2026Important: BlockAck.com provides the service described here. These terms allocate risk but cannot exclude rights or liabilities that applicable law does not permit parties to waive.
1. Eligibility and authority
You must be legally able to contract and, if acting for an organization, authorized to bind it. You must provide accurate account information, keep it current, and safeguard credentials. One person or entity may not create accounts to evade limits or enforcement.
2. The service and non-custodial boundary
Software, not custody. BlockAck.com (“BlockAck”) provides invoice and checkout software, public-address derivation through connected infrastructure, transaction monitoring, dashboards, callbacks, and related risk indicators. BlockAck is not a custodial payment processor: we do not receive, pool, hold, or forward customer funds for onward settlement to merchants. We do not provide card acquiring, deposit accounts, hosted spending wallets, exchange execution, escrow, or merchant payouts.
Direct payments and signing. Customers authorize transfers from their own wallets to merchant-controlled receiving addresses or a merchant’s configured external provider. BlockAck does not possess merchant or customer wallet private keys or seed phrases and does not sign transfers on their behalf. Bitcoin public wallet information permits receiving-address derivation and monitoring, not spending. Connected providers must use invoice-create/read credentials only; do not grant spending, payout, withdrawal, or administrator permissions. An external provider may hold or control funds under its own terms; connecting it does not make that provider non-custodial.
No customer balance or withdrawal service. BlockAck does not maintain a spendable customer-funds balance. Dashboard amounts are payment records, not deposits or a claim to funds held by BlockAck. We do not initiate merchant refunds or withdrawals and cannot reverse a confirmed blockchain transaction. Customers must arrange refunds with the merchant, who authorizes any refund through their own wallet or provider. Suspending BlockAck accounts, API access, or checkout creation is a restriction on our software, not a freeze of assets in a merchant wallet. Networks, token issuers, and external providers may impose separate restrictions.
Service fees are separate. Payments for BlockAck’s own software subscription are received by BlockAck as payment for its services, not as customer funds held for merchant settlement.
Legal scope. “Non-custodial” and the service descriptions above explain the intended technical and contractual role; they are not a representation that BlockAck or a merchant is exempt from payment-services, money-transmission, digital-asset, sanctions, or other applicable law. Regulatory classification depends on actual activities and applicable law. Nothing in these terms waives duties or liabilities that cannot lawfully be waived. BlockAck does not provide investment, tax, or legal advice.
3. Merchant responsibilities
You are solely responsible for your products and customers; wallet ownership and backups; private keys and seed phrases; receiving-address verification; pricing, refunds, taxes, records, consumer disclosures, sanctions/export controls, licenses, registrations, and all laws applicable to your business; API-key security; validating callbacks; confirming final settlement before fulfillment; and obtaining lawful rights to all submitted data. Risk indicators are advisory and are not legal determinations.
If you host a store on BlockAck, you are the seller. You are solely responsible for every product, option, image, description, price, delivery, buyer note, and buyer. That includes age limits, consumer notices, advertising rules, refunds, and whether the goods or services are legal where you, the buyer, and BlockAck operate.
4. Prohibited use
The service is only for lawful activity. You may not use it, and you may not let a customer use it, for anything illegal where you, your customer, or BlockAck operates. That includes fraud, scams, and deceptive sales; money laundering or hiding the source of funds; sanctions evasion or dealings with a sanctioned person, entity, wallet, or region; illegal drugs; illegal weapons; stolen property; counterfeit or infringing goods; malware, credential theft, or unauthorized access; human trafficking; and sexual content or services involving anyone under 18. It also includes activity by or directed at a child, unauthorized financial services, and attempts to evade a legal restriction, limit, or suspension. Lawful adult material remains your responsibility. A publish check, a category, or a store appearing on a public page is not a legal clearance, a license, or a statement that a product is lawful.
You may not probe or disrupt the service, access another merchant’s account, misrepresent custody or availability, or submit private keys, seed phrases, special-category data, or personal data the payment does not need.
Signup asks what you sell and for a public website. We may fetch that page and screen it. A screening score is not an approval, and we may keep payments off until a person reviews the page. BlockAck does not offer accounts, invoices, payment links, addresses, or checkout to comprehensively embargoed jurisdictions, including Cuba, Iran, North Korea, and Syria. We may refuse a request when our host reports a network location in one of those places. That check does not identify a person, and it does not cover every sanctioned region, name, or wallet.
BlockAck may refuse, limit, suspend, or end access, preserve records, and report to a competent authority when the law requires it or when we reasonably believe this section has been breached. Public payment addresses may be compared with official sanctions lists. A match or other risk signal is not by itself a legal determination, and it does not move or freeze funds that have already settled to a merchant wallet.
5. Networks and third parties
Bitcoin, Lightning providers, stablecoin networks, Solana or other future networks, BTCPay, wallets, nodes, cloud providers, email providers, and third-party APIs are independent systems. Their availability, fees, finality, forks, congestion, bugs, policy changes, compromise, or loss are outside BlockAck’s control. Roadmap statements are plans only, not commitments. Provisioning, synchronization, or a displayed status does not by itself establish payment readiness.
6. Fees and subscriptions
Current public plans include a free monthly API allowance and a Bitcoin-priced Starter subscription. Prices, limits, and features shown at purchase apply for the stated period. Network fees are separate. There are no automatic wallet debits; renewal requires payment of a new invoice. Fees are non-refundable except where required by law or expressly stated. We may change future prices or plans with reasonable notice, without silently repricing an already-paid period.
7. Availability, changes, and beta features
The service may be unavailable, delayed, incomplete, or changed. We may impose limits, perform maintenance, discontinue features, or label functionality as preview, sandbox, demo, or beta. Demo data and development-only mock APIs are not production transactions. No service-level commitment applies unless stated in a separately signed agreement.
8. Intellectual property and feedback
BlockAck and its licensors retain rights in the service, software, branding, and documentation. Subject to these terms, you receive a limited, revocable, non-transferable right to use the service for your internal business operations. You retain rights in your data and grant BlockAck the rights needed to host, process, transmit, and secure it. Feedback may be used without restriction or compensation.
9. Confidentiality and data
Each party must use reasonable care with non-public information and may use it only to perform under these terms, except information lawfully public, independently developed, rightfully received, or required to be disclosed. The Privacy Policy describes personal-data handling. You must not use the service to store secrets or data unnecessary for payment operations.
10. Disclaimers
TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE.” BLOCKACK DISCLAIMS ALL EXPRESS, IMPLIED, AND STATUTORY WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, ACCURACY, SECURITY, AVAILABILITY, AND THAT TRANSACTIONS, CALLBACKS, RISK SIGNALS, SCREENING RESULTS, OR NETWORK DATA WILL BE ERROR-FREE, FINAL, LAWFUL, OR SUITABLE FOR YOUR LEGAL OBLIGATIONS. A category, a publish check, a score, or a public page is not a warranty. You assume all risk of using the service and of your products, stores, buyers, and delivery.
11. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, BLOCKACK AND ITS AFFILIATES, PERSONNEL, AND SUPPLIERS WILL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES; LOSS OF PROFITS, REVENUE, DATA, GOODWILL, KEYS, DIGITAL ASSETS, OR BUSINESS; OR THIRD-PARTY, NETWORK, WALLET, SECURITY, REGULATORY, PRODUCT, OR BUYER EVENTS. BLOCKACK’S AGGREGATE LIABILITY ARISING FROM THE SERVICE WILL NOT EXCEED THE GREATER OF US$100 OR THE FEES YOU PAID TO BLOCKACK FOR THE SERVICE DURING THE 12 MONTHS BEFORE THE EVENT. WHERE PERMITTED, A CLAIM MUST BE FILED WITHIN ONE YEAR AFTER IT ACCRUES, AND YOU WAIVE UNKNOWN CLAIMS, INCLUDING ANY RIGHT UNDER CALIFORNIA CIVIL CODE SECTION 1542 OR A SIMILAR LAW. THESE LIMITS DO NOT APPLY WHERE LIABILITY CANNOT LAWFULLY BE LIMITED.
12. Indemnity
To the extent permitted by law, you will defend, indemnify, and hold harmless BlockAck and its affiliates, personnel, and suppliers from third-party claims, investigations, losses, penalties, costs, and reasonable legal fees arising from your business, products, customers, data, wallets, taxes, refunds, legal compliance, breach of these terms, or misuse of the service, including a hosted store, its listings, images, delivery, and any dispute with a buyer. This includes a claim that BlockAck was the seller, approved the goods, or should have removed them. BlockAck will provide reasonable notice and allow you to control the defense, subject to reasonable participation and settlement protections. BlockAck may participate with its own counsel at your expense where a conflict or a request for injunctive relief makes that reasonable.
13. Suspension and termination
You may stop using the service. We may suspend or terminate access for breach, risk, nonpayment, legal requirements, security, or discontinuation. Upon termination, rights to use the service end. Provisions that by nature should survive do survive, including payment obligations, ownership, disclaimers, liability limits, indemnity, and dispute terms.
14. Disputes and general terms
These terms, together with incorporated policies and any signed order, are the agreement between you and BlockAck.com about the service. A buyer, another merchant, or any other third party is not a third-party beneficiary and receives no right to enforce these terms against BlockAck. Mandatory law may grant rights that cannot be waived. Any dispute must be brought in a court with lawful subject-matter and personal jurisdiction under applicable law; nothing here creates jurisdiction where it would not otherwise exist. Where permitted, each party waives a class, collective, or representative proceeding. Before filing a claim, each party will give the other written notice and 30 days to attempt an informal resolution, unless urgent relief or mandatory law requires otherwise. You may not assign these terms without consent; BlockAck may assign them with its business. Invalid provisions are limited to the minimum necessary, and failure to enforce is not waiver. Force-majeure events excuse delay where permitted by law.
15. Changes and contact
We may update these terms prospectively. Material changes may require notice or renewed acceptance. Continued use after an effective date constitutes acceptance where permitted by law. Contact: support@blockack.com.
16. Hosted stores
Creating or publishing a hosted store requires you to read these terms and agree to the version then in effect. You also agree that you are the seller, that you are responsible for the shop and what it sells, and that you will cover BlockAck for claims about it. We record that version and the time of your agreement. The store cannot be public on an older agreement. Do not create a store unless you have read these terms. You represent that you have decided the offer is lawful where you, the buyer, and BlockAck operate, and that you are not relying on BlockAck’s check. You release BlockAck from claims arising from the store, the goods, a buyer, delivery, or a regulator’s action about your business, to the extent that release is permitted.
You are solely responsible for the store and for what it offers. BlockAck is not the seller, does not hold the goods, and does not promise delivery. Buyer disputes, refunds, and product claims are between you and the buyer. BlockAck does not undertake to review every listing, image, or buyer. A failure to remove a listing is not approval of it. We may refuse, hide, or remove a store or a product. Doing so is not an admission of a duty to monitor, and leaving a store available is not a representation to you or to a buyer that the offer is lawful.