Bridging the fiat and crypto global economies

EBX manages new user onboarding through a controlled system of Access Codes, available in three ways:

• Inviting active users through the "Invite Your Friend" feature.
• Distributing codes to influencers and strategic partners.
• Waiting List length, which varies depending on demand.

This model ensures operational stability, offers more efficient support to the user base, and allows for controlled growth. While the full release of the app is planned for future phases, the current focus is on the continuous evolution of the platform, with an iterative approach guided by community feedback.

Users who remain active for a certain period unlock invitations to invite friends directly, without having to wait on the waiting list.

In Brazil, EBX uses BRZ as the base currency for on-ramp and off-ramp transactions with in the app. This means that, except for exceptions such as direct swaps between crypto assets, all transactions on the platform are initiated using this stablecoin.

This approach facilitates everyday use, making deposits, withdrawals, purchases, and sales more predictable and efficient, as they are based on digital assets with a 1:1 parity with fiat currencies.

Conversion between reais and crypto assets is handled through Transfero's infrastructure, ensuring a secure and seamless experience for Pix transactions.

FIAT to Crypto Conversion (with Pix – On & OFF ramp)

Onramp: When making a deposit via Pix, the amounts are converted to crypto assets via Transfero, with the following features: For BRZ, the conversion is made at a 1:1 ratio with the Brazilian Real (BRL), that is, 1 BRL is equivalent to 1 BRZ.

For other stablecoins and cryptocurrencies, the exchange rate applied is determined by the transfer at the time of the transaction and may differ from the commercial rate.

Offramp: Withdrawals in Brazilian Reais via Pix are also processed via Transfero: BRZ can be converted directly to BRL at a 1:1 ratio.

For other stablecoins and crypto assets, the amount is converted to BRL according to the exchange rate in effect at the time of the withdrawal.

This structure offers predictability in BRZ transactions and flexibility to operate with other currencies, considering market fluctuations.

⚠️ Currently, transfers via Pix are available to bank accounts held by the same person as the EBX wallet owner.
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The stablecoins available on EBX maintain a 1:1 peg to the corresponding fiat currency:

BRZ: Equivalent to 1 Brazilian Real (BRL), ideal for local use with stability and native Pix integration. Issued by Transfero.

USDT: Also equivalent to 1 US Dollar (USD), with broad global acceptance. Issued by Tether.

USDC: Equivalent to 1 US Dollar (USD), widely accepted in crypto and decentralized finance. Issued by Circle.

EBX adopts a simple, transparent, and accessible pricing model:

• Deposit via Pix: 5% of the withdrawn amount.
• Withdrawal via Pix: 5% of the withdrawn amount.
• Purchase, sale, or conversion of crypto assets (Swap): 0.5% of the transaction value + gas fee + partner fees (displayed at the time of the transaction)
• Transfer of crypto assets or stablecoins to external wallets: 3% of the transferred amount + network fees
• Transfer of assets between EBX wallets (P2P): Fee-free The gas fee and the operating margin on it are dynamic and calculated according to the blockchain used and the network conditions at the time of the transaction.

When necessary, EBX advances the gas cost to the user, passing on only the amount necessary to cover operational costs and associated risks.

All applicable amounts and fees are clearly displayed in the app interface during the simulation or confirmation of a transaction, ensuring complete transparency and predictability for the user.

EBX implements a tiered identity verification system, adjusting transaction limits based on the user’s validation level and risk profile.

The process is progressive, secure, and fully compliant with Brazilian regulations.

• Level 1 – Verified Account (Quick Onboarding)
‍Monthly Limit: up to R$ 5,000 via Pix transactions
Requirements: Full name, date of birth, CPF (Brazilian tax ID), nationality (self-declared) PIX microtransaction of R$ 0.01 for identity link and two-factor authentication (2FA)

• Level 2 – Light KYC
‍Monthly Limit: up to R$ 50,000 via Pix and R$ 25,000 in cryptoassets
Requirements: Submission of a valid government-issued photo ID (RG, CNH, or RNE) liveness check via selfie and facial recognition

• Level 3 – Full KYC
‍Monthly Limit: up to R$ 300,000 in fiat and R$ 150,000 in crypto
Requirements: Recent proof of address (issued within the last 3 months) signed consent to LGPD (Brazil’s data protection law) and acknowledgment of crypto-related risks.
Limits may be adjusted based on profile and usage history.

• Level 4 – Advanced KYC (High Net Worth / Institutional / OTC)
‍Monthly Limit: No predefined limit, determined based on financial profile, source of funds, and account purpose
Requirements:Proof of income or recent tax returnProof of source of funds (bank statement, asset sale, deed, etc.) Politically Exposed Person (PEP) declaration, if applicableFor businesses: corporate bylaws, CNPJ (company tax ID), and KYC of shareholders holding over 25%

‍Users seeking to upgrade to Level 3 or 4 must contact support, attaching the required documentation for review. Limits will be assigned based on the depth and quality of verification.

Unlike traditional Web3 wallets, which rely solely on a pair of cryptographic keys (public and private), EBX leverages the Account Abstraction (ERC-4337) standard as the foundation of its self-custody architecture.

This enables the use of Smart Wallets, intelligent wallets powered by smart contracts that offer enhanced security, flexibility, and a user experience similar to modern digital banking.

Through this standard, all interactions between the Smart Wallet and the blockchain occur via a dedicated smart contract, where the user’s assets are securely allocated. While the public key still registers all on-chain interactions, the wallet’s balance and operations are managed entirely within the logic of the contract, rather than being directly tied to the private key at protocol level, as in traditional wallets.

Although the wallet is still ultimately controlled by the user’s private key, its usage is fully abstracted by EBX’s account layer, making the on-chain experience as seamless as using a digital banking app, without compromising user sovereignty.

In practice, the user remains the sole custodian of their Smart Wallet, with access secured through EBX account authentication. This ensures full and exclusive control over digital assets, in alignment with EBX’s core commitment to digital sovereignty and decentralized security.

While EBX abstracts private key usage to deliver a more accessible user experience, users who wish to manage their keys directly can export their private key via the settings menu (Manage Account → Export Private Key).

Due to the nature of Account Abstraction, however, the use of private keys in EBX Smart Wallets differs from traditional Web3 wallets.

Since assets are allocated within the Smart Contract associated with the Smart Wallet, importing the private key into a standard wallet does not guarantee direct access to funds. To move assets, users must interact directly with the smart contract or use a solution compatible with the ERC-4337 standard.

Pectra Update (EIP-7702)

EIP-7702, also known as Pectra, introduces a major innovation to Ethereum: traditional wallets (EOAs), which rely on private keys and seed phrases, will soon be able to function as Smart Wallets.

To offer greater flexibility and compatibility, EBX plans to integrate this update into its infrastructure. Once implemented, users will be able to create traditional-style wallets on EBX, using seed phrases, in addition to the current social login method.

This enhancement will allow EBX Smart Wallets to be imported and used across other platforms such as MetaMask, enabling easier multi-platform asset management and improved interoperability.

Furthermore, external EOAs will be importable into EBX, allowing users of other wallets to benefit from EBX’s intuitive interface and DeFi integrations.

The Pectra integration is already planned on the Notus API roadmap, which powers EBX’s backend infrastructure, and will be rolled out in the app as soon as the update is available on Ethereum mainnet.

EBX simplifies on-chain interactions by eliminating the need for native tokens to pay gas fees. This is made possible through the use of a Paymaster, which covers gas costs and settles fees directly in the token being transacted.

Multichain Operations & Chain Abstraction

EBX is a multichain platform, currently supporting Polygon, Solana, Arbitrum, Avalanche, Optimism, Base, BNB Smart Chain, and Ethereum. While Ethereum is available for sending and receiving tokens, we utilize the Base network for buying and selling transactions due to its higher transaction fees.

In multichain operations, EBX automatically manages cross-chain transactions, offering:
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Optimized route selection to reduce cost and latency.
Automatic bridging between networks, users don’t need to manually handle cross-chain transfers.
Gas fee abstraction, with fees settled in the token being used, removing the need to hold native tokens on each network.

This model, known as Chain Abstraction, allows users to interact with the blockchain ecosystem as if it were a single, unified network, eliminating the complexity typically associated with multichain wallets.

Token Listings and Network Compatibility

Each token listed on EBX is assigned to a primary network, strategically selected by the EBX team based on factors like transaction routing efficiency and liquidity depth.This design implies:

Regardless of the deposit origin, the asset is automatically routed to its primary network via bridges, when necessary. This ensures optimal asset management and compatibility across EBX features.
Tokens are only available for buy/sell operations on their designated primary network.

Currently, EBX supports only EVM-compatible networks (Ethereum Virtual Machine), which means blockchains such as Bitcoin and Solana are not directly supported. Due to the nature of Account Abstraction (ERC-4337), only ERC-20 tokens are usable on the platform.

To enable interaction with non-EVM assets, EBX supports wrapped versions such as wBTC and wETH, allowing users to trade and utilize these tokens within the EVM ecosystem.

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EBX Wallet runs on a robust edge computing architecture with a presence in over 330 cities worldwide, offering:

Reliable operation even in areas with unstable or limited connectivity;
Intelligent synchronization with local or satellite networks, with data encrypted at rest and in transit;

On-premises deployment through the Edge Partner Program (EPP) with Cloudflare's Works, allowing community servers and ISPs to participate in the network infrastructure.

EBX Wallet merges top-tier cryptographic security, inclusive user experience, and resilient infrastructure to power the next generation of programmable money. Built as a user-friendly gateway to the decentralized finance (DeFi) ecosystem, EBX Wallet combines cutting-edge technology with an accessible experience.