Polygon Rio Upgrade Goes Live - Near-Instant Finality and Zero Reorgs Transform Payment Rails

Chainlink has announced its role as a founding partner in the **Open Transaction Layer (OTL)** through the Baseline Protocol Consortium. The initiative addresses a critical infrastructure gap: while blockchain networks scale, they need a **coordination layer** to manage: - Identity verification - Compliance requirements - Transaction messaging This builds on Chainlink's previous focus on interoperability solutions like LayerZero, Stargate, and Superchain. The OTL aims to provide standardized infrastructure for enterprise blockchain adoption. Learn more at [otl.network](http://otl.network)

Cash App has integrated Polygon for stablecoin payments, giving its 57 million+ users access to USDC transactions on the network. **Key Features:** - Users can add a wallet address directly in Cash App to send and receive USDC on Polygon - Integration works within the existing Cash App interface - Enables low-cost, fast stablecoin transfers for mainstream users This follows recent Polygon integrations with DPT Pay for card payments and Deel for global payroll in stablecoins across 100 countries. [Read the full guide](https://polygon.technology/blog/how-to-send-and-receive-stablecoins-in-cash-app-on-polygon)

A groundbreaking security initiative is on the horizon, described as a **first-of-its-kind engagement**. The announcement calls for researchers and auditors to participate, though specific details about the nature, scope, and timeline remain undisclosed. **Key Points:** - Open invitation to security researchers and auditors - Described as unprecedented in its approach - Follows previous successful security partnerships, including a $100K audit contest with Sherlock More information expected soon.

Polygon has partnered with BRL1 and Capa to enable cross-border payments using Brazil's digital real without converting to dollars. **Key Details:** - BRL1, Brazil's most traded real-pegged stablecoin, is now live on Capa's payment infrastructure built on Polygon - Cross-border transactions settle in seconds using Capa's onchain-FX stack - The integration deepens local currency payment capabilities and stablecoin foreign exchange - Payments bypass traditional dollar-based settlement rails This collaboration aims to accelerate adoption of digital real in global payment systems by providing faster, more direct currency conversion. [Read the full announcement](https://polygon.technology/blog/brazils-real-now-moves-across-borders-without-touching-dollars-as-brl1-joins-capas-onchain-fx-stack)

Polygon has launched programmable card primitives at the wallet layer, enabling authorization and capture functionality for card programs built on stablecoin infrastructure. **Key Features:** - Card issuers can run auth/capture without holding custody of funds - Works across any blockchain through the wallet layer - Built on Polygon's Open Money Stack **Availability:** Design partner slots are now open for card issuers, exchanges, and platforms interested in building on this infrastructure. [Become a design partner](https://info.polygon.technology/become-a-design-partner?utm_source=X&utm_medium=Organic_social&utm_campaign=Wallets_design_partners&utm_content=socialsLearn) | [Technical details](https://polygon.technology/blog/auth-capture-on-polygons-open-money-stack-in-the-wallet-layer-design-partner-slots-open)