Legal Notice
Statutory disclosures for halcyonwaters.com
1Who operates this website
This website is operated by Halcyon Waters spółka z ograniczoną odpowiedzialnością (a Polish limited liability company), with its registered office at pl. Solny 2/3, 50-060 Wrocław, Poland.
The company is entered in the Register of Entrepreneurs of the National Court Register (KRS) kept by the District Court for Wrocław-Fabryczna in Wrocław, 6th Commercial Division of the National Court Register.
- KRS
- 0001245653
- NIP (Tax ID)
- 8971973382
- REGON
- 544943051
- EU VAT
- PL8971973382
- Share capital
- PLN 5,000.00, paid in full
- Legal form
- spółka z ograniczoną odpowiedzialnością
2Contact
By e-mail: enquiries@halcyonwaters.com
By post: Halcyon Waters sp. z o.o., pl. Solny 2/3, 50-060 Wrocław, Poland.
Correspondence is handled in English and Polish.
3What the company does
Halcyon Waters develops and licenses analytical software and market-data products for crypto-asset derivatives markets. Its products are made available to business users only. The company does not provide services to consumers.
The company’s live product is Cayø Largo, a crypto-options analytics platform and data API available at cayolargo.fi.
4For due-diligence teams
Why is the registered office a virtual office?
pl. Solny 2/3 in Wrocław is a virtual office: a registered address with mail handling, provided under contract by a virtual-office operator. Polish law requires a company to have a registered address it is entitled to use. It does not require an operating office at that address.
A virtual office as the registered address is a lawful and common arrangement among Polish start-ups and remote-first companies. Post sent to this address reaches the company. The company works remotely. Meetings take place by video call or in person in Wrocław on request.
How long has the company existed?
Halcyon Waters sp. z o.o. was incorporated by notarial deed on 28 May 2026 and entered in the National Court Register (KRS) on 2 June 2026. Cayø Largo opened for sales on 17 June 2026.
The product is older than the company. Its Deribit options archive starts in August 2025 and has been collected every ten minutes since. The share capital of PLN 5,000 is the statutory minimum for a Polish limited liability company. The company is funded by its shareholders.
Why does a Polish company use .fi domains?
In the company’s naming .fi stands for finance, not Finland. Technically it is the Finnish country-code domain, used here as shorthand because .finance was not available. Every Halcyon Waters product carries it: cayolargo.fi today, puntaallen.fi next.
The names follow one theme. Halcyon Waters, Cayø Largo and Punta Ållen are all places of calm water, after the motto Your Calmness Among Crypto Chaos.
Who sits on the management board?
The management board has two members. Pawel Lachowicz, the founder, is its president (prezes zarządu). The names, roles and powers of representation of both members are entered in the KRS and can be read in the public registry, where anyone can download the current extract.
Is Halcyon Waters a one-person company?
No. The company is run by its two-member management board, who are also its shareholders. The founder leads product, data and research. The second board member leads finance.
Legal support comes from dotlaw.co, a law firm in Wrocław. Accounting is handled by an external accounting firm.
Why are no clients named on the website?
The company does not name its clients, show their logos or describe their use of the data without their written consent. Trading firms commonly treat their data vendors as confidential. The company respects that by default.
The absence of client names on this website should therefore not be read as a statement about the company’s client base.
Does the company hold security certifications?
No security certification is required by Polish or EU law for the company’s activity. As a micro-enterprise, Halcyon Waters falls below the size thresholds of the NIS2 Directive as implemented in Poland. It is not a financial entity under the Digital Operational Resilience Act (DORA). Where a client is subject to DORA, the provisions it needs are agreed in that client’s contract.
The company does not currently hold an ISO/IEC 27001 certificate or a SOC 2 report. Cayø Largo runs on Amazon Web Services, whose ISO/IEC 27001 and SOC 2 reports are available to AWS customers through AWS Artifact. Vendor security questionnaires are answered on request.
Where is the company on GitHub?
The company’s account is github.com/halcyonwaterscom. Cayø Largo’s production code is proprietary and is not published. Personal accounts of the people behind the company, including any that predate it, are private and do not speak for the company.
Is the EU VAT number active?
Yes. PL8971973382 is registered for intra-EU transactions in the VIES system. A VIES confirmation is available as a PDF and can be re-checked by anyone on the European Commission’s VIES website.
5Terms applying to the products
This website is informational. Use of the Cayø Largo platform, its dashboards, its documentation and its API is governed separately by the Cayø Largo Terms of Service and the Cayø Largo Privacy Policy, together with any applicable order form. Where this notice and those documents differ in respect of the platform, those documents prevail.
6Nature of the information published here
Content published on this website, including research notes, market commentary, charts, reports and the Soundings publication, is provided for informational, analytical and educational purposes only.
Halcyon Waters does not provide investment advice, investment research or financial analysis within the meaning of Directive 2014/65/EU (MiFID II), and does not issue investment recommendations within the meaning of Regulation (EU) No 596/2014 (MAR) or Commission Delegated Regulation (EU) 2016/958. The company is not authorised to provide investment services and does not provide portfolio management, brokerage or any crypto-asset service requiring authorisation under Regulation (EU) 2023/1114 (MiCA).
Nothing published here constitutes a personal recommendation, an assessment of suitability or appropriateness for any person, or an offer, solicitation or invitation to buy, sell or hold any financial instrument or crypto-asset. Outputs describe observed and historical market structure. They do not forecast prices.
Trading in crypto-assets and crypto-asset derivatives carries a high risk of loss. Any decision taken on the basis of information published here is taken independently and at the reader’s own risk.
7No offer
Information on this website concerning the company’s products, their descriptions, technical parameters, commercial conditions and pricing does not constitute an offer within the meaning of Article 66 of the Polish Civil Code, unless expressly stated otherwise in writing by the company.
8Accuracy and availability
The company takes reasonable care in preparing the content of this website but gives no warranty, express or implied, as to its accuracy, completeness, timeliness or fitness for any particular purpose. Content may be amended or withdrawn at any time without notice.
The website is provided on an “as available” basis. The company does not warrant uninterrupted or error-free access.
9Intellectual property
Unless marked otherwise, all content on this website, including text, charts, visualisations, reports, methodologies, software, trade marks, logos and the names Halcyon Waters, Cayø Largo and Punta Ållen, is the property of Halcyon Waters sp. z o.o. or is used under licence, and is protected by copyright and other intellectual property rights.
Quotation for the purposes of commentary, review or reporting is permitted with clear attribution and a link to the source page. Reproduction, redistribution, systematic extraction, or use of the content to build or train a competing product or dataset requires the company’s prior written consent.
10External links
This website links to third-party websites. The company has no control over their content and accepts no responsibility for it. Links do not imply endorsement. Exchange names and marks referenced on this website, including Deribit, identify the venues whose public market data the company processes, and do not indicate any partnership, sponsorship or endorsement.
11Personal data
Halcyon Waters sp. z o.o. is the controller of personal data processed through this website. How that data is collected, used, retained and protected, and the rights available under the General Data Protection Regulation (GDPR), are set out in the Privacy Policy.
12Governing law and jurisdiction
This notice and any non-contractual obligations arising out of or in connection with it are governed by the laws of Poland. Any dispute arising out of or in connection with this website shall be submitted to the exclusive jurisdiction of the competent common courts for the company’s registered office in Poland.
13Changes to this notice
The company may amend this notice to reflect changes in its business, its products or applicable law. The version published on this page at any given time is the version in force.
In force from 28 October 2026