PayFi protocol PolyFlow partners with Solana Attestation Service to build the next-generation consumer payment network

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

Through this collaboration, PolyFlow integrates SAS to directly anchor transaction credentials and user identity authentication data onto the Solana blockchain, ensuring that every payment is traceable, verifiable, and tamper-proof. Leveraging this integration, PolyFlow has significantly upgraded its Payment ID (PID) system, providing users and enterprises with a unified, cross-chain compatible on-chain credit passport that enables secure, compliant, and efficient payment and settlement experiences for users, Web3 projects, and DeFi protocols.

Real-World Applications: From DePIN SIM Verification to Supply Chain Finance Credentials

In the showcased application scenarios, PolyFlow applies PID + SAS to the real-name verification and eSIM activation process within its open wireless network project ROAM. After users complete KYC verification, PolyFlow automatically generates on-chain credentials. ROAM can then verify the authenticity of these credentials via SAS and automatically issue Premium eSIMs without requiring secondary KYC, greatly improving efficiency and mitigating identity fraud risks.

Beyond eSIM use cases, the PID+SAS combination will be widely applied in the following areas:

• DeFi Lending & Credit Scoring: Recording users’ on-chain credit behaviors (repayment history, staking performance, etc.) to provide lending protocols with real-time, trustworthy credit scoring references.
• Supply Chain Finance Credentials: Anchoring invoices, warehouse receipts, bills of lading, and other financial documents onto the blockchain so financial institutions can instantly verify their authenticity, accelerate loan disbursement, and reduce trade finance fraud risks.

Chuck, CFO of PolyFlow, stated at the Solana Accelerate conference:

“Integrating SAS enables our Payment PID system to achieve true on-chain trustworthiness and cross-chain recognition, injecting a next-generation foundation of trust into the DeFi, payments, and supply chain finance ecosystems.”

About PolyFlow

PolyFlow is a leading consumer PayFi infrastructure protocol dedicated to bridging traditional payment networks, DeFi, and real-world assets, offering global enterprises solutions for cross-border settlements, liquidity management, and tokenized payments. The team brings over 20 years of experience in the financial industry, having processed over $200 million in payments. Its core products serve the Solana and multi-chain ecosystems.

 🌐 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 built on the Solana blockchain. It allows developers to customize credential structures and issue various types of on-chain attestations such as KYC verification, Proof of Humanity, and social achievements. Any user or device can act as a credential holder, with credentials signed by trusted issuers and verified through the SAS SDK. SAS is widely used in anti-Sybil attacks, compliance checks, and user identity verification scenarios.