Privacy policy

This privacy policy applies between you, the User of this Website and Block Forensics Ltd., the owner and provider of this Website. Block Forensics Ltd. takes the privacy of your information very seriously. This privacy policy applies to our use of any and all Data collected by us or provided by you in relation to your use of the Website.

This privacy policy should be read alongside, and in addition to, our Terms and Conditions, which can be found at:

Please read this privacy policy carefully.

Definitions and interpretation

1. In this privacy policy, the following definitions are used:


collectively all information that you submit to Block Forensics Ltd. via the Website. This definition incorporates, where applicable, the definitions provided in the Data Protection Laws;

Data Protection Laws

any applicable law relating to the processing of personal Data, including but not limited to the Directive 96/46/EC (Data Protection Directive) or the GDPR, and any national implementing laws, regulations and secondary legislation, for as long as the GDPR is effective in the UK;


the General Data Protection Regulation (EU) 2016/679;

Block Forensics Ltd., or us

Block Forensics Ltd., a company incorporated in England and Wales with registered number 11592963 whose registered office is at 33 Wrotham Road , Borough Green, Sevenoaks, Kent, TN15 8DD;

User or you

any third party that accesses the Website and is not either (i) employed by Block Forensics Ltd. and acting in the course of their employment or (ii) engaged as a consultant or otherwise providing services to Block Forensics Ltd. and accessing the Website in connection with the provision of such services; and


the website that you are currently using,, and any sub-domains of this site unless expressly excluded by their own terms and conditions.

2. In this privacy policy, unless the context requires a different interpretation:

  • the singular includes the plural and vice versa;
  • references to sub-clauses, clauses, schedules or appendices are to sub-clauses, clauses, schedules or appendices of this privacy policy;
  • a reference to a person includes firms, companies, government entities, trusts and partnerships;
  • "including" is understood to mean "including without limitation";
  • reference to any statutory provision includes any modification or amendment of it;
  • the headings and sub-headings do not form part of this privacy policy.
Scope of this privacy policy

3. This privacy policy applies only to the actions of Block Forensics Ltd. and Users with respect to this Website. It does not extend to any websites that can be accessed from this Website including, but not limited to, any links we may provide to social media websites.

4. For purposes of the applicable Data Protection Laws, Block Forensics Ltd. is the "data controller". This means that Block Forensics Ltd. determines the purposes for which, and the manner in which, your Data is processed.

How we collect Data

5. We don’t collect your data

Data that is given to us by you

6. Block Forensics Ltd. will collect your Data in a number of ways, for example:

  • when you contact us through the Website, by telephone, post, e-mail or through any other means;

in each case, in accordance with this privacy policy.

Data that is collected automatically

7. To the extent that you access the Website, we will collect your Data automatically, for example:

  • we automatically collect some information about your visit to the Website. This information helps us to make improvements to Website content and navigation, and includes your IP address, the date, times and frequency with which you access the Website and the way you use and interact with its content.
Keeping Data secure

8. We will use technical and organisational measures to safeguard your Data, for example:

  • access to your account is controlled by a password and a user name that is unique to you.
  • we store your Data on secure servers.

9. Technical and organisational measures include measures to deal with any suspected data breach. If you suspect any misuse or loss or unauthorised access to your Data, please let us know immediately by contacting us via this e-mail address: [email protected]

10. If you want detailed information from Get Safe Online on how to protect your information and your computers and devices against fraud, identity theft, viruses and many other online problems, please visit Get Safe Online is supported by HM Government and leading businesses.

Data retention

11. Unless a longer retention period is required or permitted by law, we will only hold your Data on our systems for the period necessary to fulfil the purposes outlined in this privacy policy or until you request that the Data be deleted.

12. Even if we delete your Data, it may persist on backup or archival media for legal, tax or regulatory purposes.

Your rights

13. You have the following rights in relation to your Data:

  • Right to access- the right to request (i) copies of the information we hold about you at any time, or (ii) that we modify, update or delete such information. If we provide you with access to the information we hold about you, we will not charge you for this, unless your request is "manifestly unfounded or excessive." Where we are legally permitted to do so, we may refuse your request. If we refuse your request, we will tell you the reasons why.
  • Right to correct - the right to have your Data rectified if it is inaccurate or incomplete.
  • Right to erase - the right to request that we delete or remove your Data from our systems.
  • Right to restrict our use of your Data - the right to "block" us from using your Data or limit the way in which we can use it.
  • Right to data portability - the right to request that we move, copy or transfer your Data.
  • Right to object - the right to object to our use of your Data including where we use it for our legitimate interests.

14. To make enquiries, exercise any of your rights set out above, or withdraw your consent to the processing of your Data (where consent is our legal basis for processing your Data), please contact us via this e-mail address: [email protected].

15. If you are not satisfied with the way a complaint you make in relation to your Data is handled by us, you may be able to refer your complaint to the relevant data protection authority. For the UK, this is the Information Commissioner's Office (ICO). The ICO's contact details can be found on their website at

16. It is important that the Data we hold about you is accurate and current. Please keep us informed if your Data changes during the period for which we hold it.

Links to other websites

17. This Website may, from time to time, provide links to other websites. We have no control over such websites and are not responsible for the content of these websites. This privacy policy does not extend to your use of such websites. You are advised to read the privacy policy or statement of other websites prior to using them.

Changes of business ownership and control

18. Block Forensics Ltd. may, from time to time, expand or reduce our business and this may involve the sale and/or the transfer of control of all or part of Block Forensics Ltd.. Data provided by Users will, where it is relevant to any part of our business so transferred, be transferred along with that part and the new owner or newly controlling party will, under the terms of this privacy policy, be permitted to use the Data for the purposes for which it was originally supplied to us.

19. We may also disclose Data to a prospective purchaser of our business or any part of it.

20. In the above instances, we will take steps with the aim of ensuring your privacy is protected.


21. You may not transfer any of your rights under this privacy policy to any other person. We may transfer our rights under this privacy policy where we reasonably believe your rights will not be affected.

22. If any court or competent authority finds that any provision of this privacy policy (or part of any provision) is invalid, illegal or unenforceable, that provision or part-provision will, to the extent required, be deemed to be deleted, and the validity and enforceability of the other provisions of this privacy policy will not be affected.

23. Unless otherwise agreed, no delay, act or omission by a party in exercising any right or remedy will be deemed a waiver of that, or any other, right or remedy.

24. This Agreement will be governed by and interpreted according to the law of England and Wales. All disputes arising under the Agreement will be subject to the exclusive jurisdiction of the English and Welsh courts.

Changes to this privacy policy

25. Block Forensics Ltd. reserves the right to change this privacy policy as we may deem necessary from time to time or as may be required by law. Any changes will be immediately posted on the Website and you are deemed to have accepted the terms of the privacy policy on your first use of the Website following the alterations.

You may contact Block Forensics Ltd. by email at [email protected]

15 October 2018

Frequently Asked Questions

What is an Airdrop?

Since launch in 2014, the Ethereum network and community has grown significantly to support hundreds of thousands of independently listed Blockchain projects, including smart contract offerings and tokanised equity, assets or ICOs.  For years now, project teams have built early traction by distributing free tokens to the community at large, through Airdrops.  There have been several thousand Airdrops to date.

Most Ethereum airdrops involve ERC-20 tokens which are created on, and live only on the Ethereum network.

The low cost of the airdrop model often makes it the preferred method to directly engage with the community at large.  To avoid distributing tokens to lost, compromised or unusable wallets, most Airdrops target balance holding wallets, some target recently active wallets while some request users register for participation in advance.  So in short, lots of people have lots of tokens, worth millions, and most of them don't even know it yet.  You couldn't make it up.

Ethersweep was actually built after one of the founders checked an old Ethereum wallet to find over $500 of tokens unknowlingly accumulated through airdrops.  Since no easy conversion process exists, those tokens took several days to convert to ETH, incurring an unnecessary amount of fees.  A solution was needed.

Why would people give away money?

It might sound crazy to randomly distribute millions of dollars of crypto currency but the business case is pretty logical. 

Some points to consider:

- ERC20 token projects generally start from well-funded positions, with zero users and minimal awareness.

- Building user bases through traditional channels is hard.  It can take years and cost millions.

- Distributing 5%-10% of tokens carries minimal cost and will not significantly impact token price (which can fluctuate +/-100% daily due to market volatility).

- With negligible cost, the approach has repeatedly proven to be the most cost-effective route to rapidly building a user base.

- Oh and the crowds love them.  It turns out nothing motivates a community to promote your tech faster than free money.  Airdrop recipients often become brand advocates due to being personally invested in the success of a project or currency.

- Chain splits are even more indiscriminate in their distribution of wealth, forking relies on full chain duplication, literally duplicating user-base at point of split and effectively reissuing every active balance.

What can I do with my Airdrop tokens?

In simple terms you can keep them or sell them. 

Tokens are easy to miss, easy to lose and easy to forget about… and they often don’t retain their value.  In 2018 most ICO tokens underperformed against their underlying ETH value, meaning those who converted Airdrop tokens to ETH have historically been far better off than those who waited.  On that basis we recommend converting Airdrop tokens to ETH using our simple tool.  Then HODL to Lambo. 

Whatever you decide, always ensure your tokens are stored securely in a wallet that only you have access to.

Is Ethersweep Secure?

Ethersweep is very secure, our systems are built to withstand all known attack vectors and we overcome the rest with sophisticated Game Theory.  But we would say that.  Ethersweep is as risk free as we believe a service of this nature can be.  Services are transactional in nature and users are not required to create accounts.  We do not store personal data and we keep the use of cookies to a minimum.  Our intentionally data-light approach ensures privacy by design and enables Ethersweep to provide secure services under a far lower cost model.

We operate DDOS protection and full redundancy across all critical infrastructure.

What happens if I sweep a wallet containing ETH?

Common scenario.  We simply transfer the ETH balance to the output address, together with the funds from any converted ERC20 tokens.

We also give you the option to retain any unsupported tokens (we currently support around 97% of the most common tokens) and these are transferred to your outpayment wallet on completion.

We recognise that some users may prefer to remove their ETH balance before sweeping their wallet for ERC20 tokens.  The choice is yours.

Mainnet Migrations and Decomissioned ERC-20 Tokens

ERC-20 tokens and associated projects periodically migrate from the Ethereum blockchain to “main-net” environments, often including the deployment of a third party blockchain and the replication of all existing ERC-20 token balances to the new blockchain.

At the point of migration, the original ERC-20 token balances become redundant, ceasing to be of value or function, and are not interchangeable with the new main-net tokens. Nor can they be exchanged through our services.

Due to the time it takes for larger exchanges to update the relevant quotation libraries, systems and APIs, in the event of supported ERC-20 tokens migrating to a third party main-net, it is known that for a short period of time, querying prices for decommissioned ERC-20 tokens may return quotes based on the new main-net token prices. These quotes cannot be supported.

In the event of users attempting to convert decommissioned ERC-20 tokens to ETH, the exchange stage of the transaction will fail, since the tokens cannot be exchanged for ETH and the tokens may not be economically recoverable (due to being worthless).

What ERC-20 tokens does Ethersweep support?

We support nearly all mainstream ERC-20 tokens, literaly 97% of the most common tokens.  Drop in your wallet address and Ethersweep will present all supported and unsupported tokens together with the current market value for those tokens. Check if your tokens are supported.

What happens to unsupported ERC-20 tokens?

Good question.  In the rare event of your wallet containing unsupported tokens, the checkout process gives users the option to transfer some or all unsupported tokens to the specified output address.  

How do I get my unsupported token listed?

We run our token swaps through the major mainstream exchanges. As soon as your token is listed on eg. Binance or HitBTC it will be automatically supported by Ethersweep.

What if Ethersweep gets hacked?

Etherwseep does not have user accounts and we do not store any user funds. 

When sweeping wallets, we convert ERC-20 tokens to Ether in seconds, then we send that Ether to user specified output wallets, again within seconds. It is not possible for users to store balance on our systems.  On that basis, in the unlikely event of Ethersweep systems being compromised, no user information or funds are placed at risk.

Once my tokens are converted, why can’t you send my ETH back to the same wallet?

Think about it.  You give us the private key to sweep your ERC20 tokens… if Ethersweep outputs the resultant ETH to the same wallet then we still have the private key to that wallet.  That is bad practice and we don’t want to be in a position where we need to dispose of thousands of high value private keys each day, it would make us a huge target.  We prefer to operate in a manner that minimises trust required between parties.  From our perspective, wallets are considered burned once swept and all funds are output to a user specified wallet that only you control.  It is the safest way to operate our service.


Much like MyEtherWallet, Shapeshift or other blockchain tools or exchanges we rely entirely on our reputation. To help build trust within the community we take the following transparency and community support measures.

- We publish every Ethersweep Tx in the transactions box on this page. 

- We operate a 2-way telegram channel here:

- Twitter:

- We actively moderate and support the Ethersweep reddit page here:


Naturally. But coming soon.