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Aristokrates OÜ

The company behind AgentaOS.

We build AgentaOS — payment infrastructure so businesses can accept payments globally and settle in EUR. Checkout links, auto invoicing, EU IBAN, guardian wallets. 160+ countries. No Stripe needed.

EU/US/CHRegulatory coverage
<1sSettlement time
x402Hackathon Winner
Ecosystem
Hedera HashgraphHedera Hashgraph
ChainlinkChainlink
Ethereum FoundationEthereum
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AgentaOS capabilities

Everything a business needs to accept payments globally and settle in EUR. Built on 9 years of fintech experience.

01

Checkout & Invoicing

Checkout links for stablecoin payments. Auto-generated invoices with EUR amount, VAT, exchange rate, and buyer data. PDF and CSV export. Monthly statements for your accountant.

02

EU IBAN & Settlement

Connected to a licensed EU e-money institution. Real IBAN. SEPA transfers. EUR settlement in seconds. 160+ countries supported including Western Balkans.

03

Guardian Wallets

Non-custodial MPC wallets with 14 spending policy evaluators. Daily limits, vendor allowlists, rate limits, slippage protection. Your AI agents operate under your rules.

04

x402 Protocol & API

HTTP 402 machine-to-machine payments. REST API with API keys, webhooks, and CLI. AI agents pay invoices and complete checkouts programmatically.

2017 PwC FinTech Innovation Award
2021 Chainlink “On The Rise”
2026 x402 Hackathon Winner
Conference Speaker · 5+/year Published Researcher · Zenodo

The Journey

Panche Isajeski
Panche Isajeski
Founder, Aristokrates

In 2021, I launched Kromatika, a crypto trading platform, under the pseudonym Aristokrates, Greek for “rule of the best.” A year later, the SEC named the token in a complaint filing as part of the Wahi insider trading case. I was not a party to the case, but the token was classified as an unregistered security. That experience showed me how wide the gap is between what builders create and what regulators expect.

In 2024, I started Blockia Labs in Tallinn, Estonia to bridge that gap. We helped fintechs and banks launch stablecoin and tokenization products, from first questions to working prototypes. Along the way, we built our own product accelerators: SDKs and APIs for identity, wallets, and payment flows. Not full products yet, but the building blocks for one.

As those building blocks matured, we saw a bigger opportunity. Stablecoins are changing how money moves across borders. AI agents are changing how businesses operate. We wanted to build at that intersection, full time. So the pseudonym became the company. Aristokrates was born out of Blockia Labs, and with it, our flagship product: AgentaOS.

AgentaOS is payment infrastructure for businesses that can't wait for Stripe. Checkout links, auto invoicing with EUR and VAT, EU IBAN via a regulated e-money partner, and guardian wallets for AI agents. 160+ countries. A founder in Skopje or Sarajevo can accept payments from a customer in San Francisco without registering a company abroad.

Questions we get asked

What is MiCA and how does it apply to non-custodial services?

MiCA (Markets in Crypto-Assets Regulation) is the EU’s regulatory framework for crypto-assets, effective from 2024. It classifies tokens into utility tokens, asset-referenced tokens, and e-money tokens, each with different compliance requirements. Under MiCA, non-custodial wallet providers are considered exempt from CASP licensing because they never hold, control, or have access to user funds. AgentaOS operates as a non-custodial software platform. Users retain full control of their keys. KYC/AML is handled by our regulated e-money partner (Monerium). We never hold, control, or have access to user funds.

What is the GENIUS Act and how does it affect stablecoins?

The GENIUS Act (Guiding and Establishing National Innovation for US Stablecoins) is the US framework for regulating stablecoin issuers. It establishes federal licensing requirements, reserve and transparency standards, and consumer protection rules for payment stablecoins. For companies integrating stablecoin payments in the US market, this means working with licensed issuers and ensuring your infrastructure meets the new compliance requirements.

How does cross-border settlement work with stablecoins?

Traditional cross-border B2B payments take 3 to 5 days and lose 1 to 3% in fees through correspondent banking networks. With stablecoin settlement, the payment clears on-chain in seconds using regulated e-money tokens. The sender converts fiat to a regulated stablecoin, the on-chain transfer settles instantly, and the recipient can convert back to fiat or hold the stablecoin. This eliminates intermediary delays and reduces costs to near zero. It also makes payments programmable, which means AI agents can trigger and settle transactions autonomously.

What is the difference between ERC-20 and ERC-3643 tokens?

ERC-20 is the basic Ethereum token standard with no built-in compliance. Anyone can send tokens to anyone, which makes it unsuitable for regulated securities. ERC-3643 adds an identity and compliance layer on top: token holders must pass identity verification, transfers are checked against compliance rules in real time, and issuers can enforce jurisdictional restrictions. This makes ERC-3643 the standard for security tokens that need to meet regulations like MiCA or SEC requirements.

What are verifiable credentials and how are they used in fintech?

Verifiable credentials are digital proofs of identity or qualifications that a person controls and can share selectively. Unlike traditional KYC where every platform stores a copy of your passport, verifiable credentials let you prove your identity without repeatedly handing over personal data. In fintech, they enable compliant onboarding (KYC/AML), reusable identity verification across platforms, digital product passports for supply chain tracking, and privacy-preserving compliance under eIDAS 2.0 and GDPR.

What is agentic commerce and how does it work?

Agentic commerce is the shift from humans managing every transaction to AI agents handling purchasing, invoicing, and settlement autonomously. It works through open protocols like x402, which extends the HTTP standard (the “402 Payment Required” status code) so that any web service can request payment and any AI agent can fulfill it using stablecoins. AI agents already manage procurement, compare suppliers, and place orders. Agentic commerce gives them the payment rails to settle those transactions instantly, with or without a human in the loop.

Get in touch.

Need to accept payments globally? Can’t use Stripe? Running a crypto company without proper invoicing? Let’s talk.