Understanding the Transaction Flow: How Crypto PSPs Drive Adoption of Crypto and Stablecoin Payments

Below is an overview of the key considerations businesses should understand when evaluating their crypto payment setup.

Custody Models and Settlement Choices: A Quick Overview

Before mapping the end-to-end transaction flow, it's important to understand two foundational concepts: custody and settlement.

Custody can be arranged in several ways:

• Self-custody: The merchant directly manages their digital asset wallet and controls the private keys.
• Custodial solutions: A third-party provider holds the assets on behalf of the merchant, reducing operational load but introducing counterparty risk.
• Hybrid models: A combination of both approaches.

Settlement can occur in:

• Crypto (including stablecoins): The merchant receives payouts in digital assets and is exposed to price volatility.
• Fiat currency: The PSP converts the crypto to traditional money (e.g., USD, EUR), shielding the merchant from market swings.

These decisions significantly influence how the transaction flow is designed. For example, self-custody combined with crypto settlement maximizes control but leaves the merchant fully exposed to volatility, while custodial services with fiat settlement favor convenience and stability at the cost of increased dependence on the provider.

Scenario 1A: Self-Custody with Direct Crypto Settlement

In this setup, the merchant manages their own wallet and receives customer payments directly in cryptocurrency. This model is appealing for businesses with a strong liquidity position and a willingness to tolerate crypto market fluctuations. Large enterprises may require strict controls, whereas small merchants with simpler workflows often find this approach easier to manage.

The key advantage is full ownership with no counterparty risk.

Scenario 1B: Self-Custody with Conversion to Fiat

A variation of the above involves merchants handling the custody themselves but converting their crypto to fiat—usually by transferring it to an exchange. This gives companies the freedom to choose when to convert, allowing a degree of financial planning or hedging. While it requires technical and operational readiness, it offers flexibility for smaller or more agile merchants.

Both versions of Scenario 1 are typically suitable for companies that can tolerate volatility and prefer to remain in control of their digital assets.

Scenario 2: Custodial Wallets with Crypto Payout

Here, a Crypto PSP or another provider manages the wallet on behalf of the merchant.

The customer payment flow is similar, but the received crypto lands in the custodial wallet rather than in the merchant's own address. From there, the merchant can:

• Retain the crypto,
• Convert it to fiat,
• Or transfer it to an external wallet.

This model is ideal for businesses that want to accept crypto but prefer not to handle wallet security or technical operations directly. While it introduces a degree of counterparty risk, the operational effort is much lower.

Scenario 3: Fiat Settlement through a Crypto PSP

In this final model, the merchant receives fiat instead of crypto. Once the customer pays in cryptocurrency, the PSP immediately converts the funds and settles the equivalent fiat amount into the merchant's bank account.

This option fits organizations that want exposure to crypto payments without holding digital assets. It also supports merchants whose internal policies, accounting rules, or compliance frameworks restrict direct crypto handling. It is a low-risk, low-complexity path for integrating crypto payments into existing financial systems.

Compliance Across All Models

Regardless of how the merchant chooses to manage custody or settlement, compliance responsibilities remain central to the acceptance process.

Crypto PSPs typically handle customer-level compliance checks such as AML screening, identity verification, or blockchain transaction analysis. If an issue is detected, the payment may be reversed, and the merchant is notified. For marketplaces, compliance may also apply to validating seller payout wallets. These procedures are an integral part of a PSP's operating model and contribute to the overall risk management framework.

Choosing the Right Model for Your Business

The three models outlined above provide a structured way for merchants to match their crypto acceptance strategy to their operational maturity, risk tolerance, and treasury requirements.

Although not comprehensive, this framework helps organizations evaluate their internal capabilities and select the right combination of custody and settlement options. With a clear strategy, crypto payments can become an asset for innovation, growth, and customer experience.