“The integration of SAS allows our payment PID system to truly achieve on-chain trust and cross-chain recognition, injecting a new generation of trust foundation into the DeFi, payment, and supply chain finance ecosystem.”

May 23, 2025, New York — PolyFlow, a global leader in consumer PayFi infrastructure services, officially announced a strategic integration partnership with Solana Attestation Service (SAS) at the Solana Accelerate conference. The two parties will jointly promote the construction of on-chain credentials and payment trust, setting new standards for cross-border settlement, liquidity management, and consumer crypto payment scenarios.

Through this collaboration, PolyFlow integrates SAS to directly anchor transaction credentials and user identity authentication data on the Solana chain, ensuring that every payment possesses the characteristics of traceability, verifiability, and immutability. Leveraging this integration, PolyFlow has significantly upgraded its Payment ID (PID) system, providing users and enterprises with a unified, multi-chain interoperable on-chain credit passport, helping users, Web3 projects, and DeFi protocols achieve secure, compliant, and efficient payment and settlement experiences.

Practical Application Scenarios: From DePIN SIM Verification to Supply Chain Finance Credentials

In the application scenarios showcased, PolyFlow applies PID + SAS to the eSIM real-name verification scenario of its open wireless network project ROAM. After users complete KYC authentication, PolyFlow automatically generates on-chain credentials, allowing ROAM to verify the authenticity of user credentials based on SAS and automatically issue Premium eSIMs, eliminating the need for secondary KYC, greatly enhancing process efficiency and preventing identity fraud risks.

In addition to the eSIM card scenario, the combination of PID + SAS will also be widely applied in the following areas:

• DeFi Lending and Credit Scoring: Recording users' on-chain credit behaviors (repayment records, staking performance, etc.) to provide real-time and trustworthy credit scoring references for lending protocols.
• Supply Chain Finance Credentials: Anchoring invoices, warehouse receipts, bills of lading, and other document credentials on-chain, allowing financial institutions to instantly verify the authenticity of credentials, speeding up loan disbursement and reducing trade finance fraud risks.

PolyFlow CFO Chuck stated at the Solana Accelerate conference:

“The integration of SAS allows our payment PID system to truly achieve on-chain trust and cross-chain recognition, injecting a new generation of trust foundation into the DeFi, payment, and supply chain finance ecosystem.”

About PolyFlow

PolyFlow is a leading consumer PayFi infrastructure protocol dedicated to bridging traditional payment networks, DeFi, and real-world assets, providing global enterprises with cross-border settlement, liquidity management, and credentialized payment solutions. The team has over 20 years of experience in the financial industry, having processed payments exceeding $200 million, with core products covering the Solana and multi-chain ecosystem.

 🌐 Official Website: https://polyflow.tech/

 🤝 Social Media: https://link3.to/polyflow

About Solana Attestation Service (SAS)

SAS is an open-source on-chain credential issuance and verification protocol on the Solana blockchain, supporting developers to customize credential structures and issue various on-chain credentials such as KYC certification, Proof of Humanity, social achievements, and more. Any user or device can act as a credential holder, with credentials signed by trusted issuers, and verifiers can validate through the SAS SDK, widely used in scenarios such as preventing Sybil attacks, compliance checks, and user identity authentication.

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