Author: KarenZ, Foresight News
The next phase of competition for U-Cards might not be about issuing the cards themselves, but about who can get users to use them repeatedly.
On June 15, Rain announced the opening of its rewards program to platform partners. This is a loyalty capability directly embedded within Rain's card-issuing infrastructure. Partners can configure the name of the points, earning ratios, redemption methods, bonuses, and merchant subsidy campaigns within their own card products.
On the surface, Rain Rewards is a points and loyalty feature for card programs; but within the context of Rain's overall business, it more closely resembles a crucial puzzle piece for its stablecoin payment infrastructure.
Rain is a stablecoin payment infrastructure company. It serves not retail users, but enterprises, neobanks, fintech platforms, developers, and AI agents. Partners can use Rain to issue stablecoin-backed cards and wallets, accessing on/off ramps, cross-border payments, rewards programs, and risk control capabilities. For end-users, the experience might just be a card that can be used for both offline and online purchases; for enterprises, Rain provides a complete back-end system for integrating stablecoins into traditional payment networks.
Card Rewards Program: Retention is Paramount
The core of Rain Rewards is not about moving points on-chain, but about embedding the rewards program into the card-issuing infrastructure itself.
According to Rain's announcement on June 15, any partner running a card program on the Rain platform can launch a private-label loyalty program without having to integrate a third-party points provider separately or build a rewards system from scratch. Rain stated that during a private test of this rewards program with Avalanche Card, cardholders who joined the program had a 25% higher spend than those who did not.
Its mechanics also align more closely with financial infrastructure than a typical marketing tool. Points, earning rules, and redemption are all handled within the same system that processes spending and settlement. Furthermore, points are only generated on-chain after a transaction is finally completed, ensuring refunds or reversals do not leave behind difficult-to-manage liabilities.
Partners can set the program name, points-back percentage, category bonuses, merchant subsidy campaigns, allow users to offset their bills with points within their own app, or redeem for hotels and flights through a white-labeled travel portal.
This capability stems from Rain's acquisition of Uptop in November 2025. Uptop was an on-chain rewards platform that had provided rewards systems for clients like the Cleveland Cavaliers and the Detroit Pistons.
After acquiring Uptop, Rain integrated the rewards capability into its own card and wallet platform, forming a more complete enterprise-grade payment product stack.
This point is critical. If stablecoin cards only solve the 'can you spend' problem, it's difficult to compete with mature credit cards and fintech products. In reality, card programs compete for user frequency, merchant subsidies, benefit design, and brand affinity. By building Rewards into its underlying system, Rain essentially allows partners to have an operational consumption growth tool at their disposal as soon as they issue a stablecoin card.
What is Rain: The Backend for Stablecoin Payments
Rain was co-founded by Farooq Malik (CEO) and Charles Yoo-Naut (CTO).
Based on a 2022 interview with the two founders by Circle Ventures, we can see their starting point wasn't stablecoin cards from the outset, but rather a 2021 side project called SignandWire. This project initially aimed to embed payment functionality into electronic signature workflows. Later, an entrepreneur asked if USDC could be used as a payment method within signed investment documents, which led Farooq Malik and Charles Yoo-Naut to focus on the near real-time settlement capabilities of stablecoins. They first integrated USDC on Ethereum for SignandWire, and later, upon request from Solana ecosystem entrepreneurs, integrated USDC on Solana.
In discussions with Web3 entrepreneurs, the pair identified a more frequent pain point: many DAOs, protocol teams, and native on-chain companies held large amounts of crypto assets but still had to use temporary off-ramps, reimbursements, and manual processes to pay for real-world expenses like GitHub, SaaS, travel, and computers.
Rain initially evolved around the spend management needs of such teams, providing corporate cards and expense management tools, acting as a conversion layer between the traditional financial system and Web3 treasury systems. Subsequently, Rain's business expanded from DAO spend management to stablecoin card issuance, wallets, settlement, and enterprise-grade payment infrastructure, continuing this underlying logic: enabling on-chain assets to enter real-world payment scenarios in ways familiar to businesses and merchants.
Today, Rain is a Principal Member of Visa and Mastercard, enabling partners to offer stablecoin-backed credit cards, prepaid cards, and related wallet capabilities through the two major card networks.
In 2025, Rain also joined Visa's stablecoin settlement pilot and claimed to have migrated its Visa card settlement to USDC, enabling settlement with Visa 7 days a week, 365 days a year. When a user spends with a Visa card issued by Rain, Visa still settles with the merchant acquirer via conventional processes, while Rain uses stablecoins to complete network settlement in the backend.
Notably, the recently popular U-Card Plasma One is also issued by Rain under a Visa authorization.
In other words, Rain's role is not to replace existing payment networks, but to connect stablecoin settlement, card issuance, wallet, and compliance capabilities to traditional card networks, allowing enterprises to use one set of infrastructure to bring on-chain funds into offline and online consumption scenarios.
Accelerated Fundraising: From Series A to Series C in 10 Months
The pace of Rain's fundraising reflects the repricing of stablecoin payment infrastructure over the past year.
In March 2025, Rain announced the completion of a $24.5 million Series A funding round led by Norwest Venture Partners, with new investors including Galaxy Ventures, Goldcrest, Thayer, Hard Yaka joining, and existing investors like Lightspeed Venture Partners, Coinbase Ventures, Vinyl Capital, Canonical Crypto, and Latitude Capital participating further. Rain stated at the time that its transactions covered over 100 countries, with growth exceeding 15x in the past 12 months.
Five months later, in August 2025, Rain completed a $58 million Series B funding round led by Sapphire Ventures, with participation from Dragonfly, Galaxy Ventures, Endeavor Catalyst, Samsung Next, Lightspeed, and Norwest. Rain announced in the statement that transaction volume had grown 10x since January 2025, with Visa card programs processing millions of transactions in over 150 countries.
In January of this year, Rain completed a $250 million Series C funding round led by ICONIQ, with participation from Sapphire Ventures, Dragonfly, Bessemer Venture Partners, Galaxy Ventures, FirstMark, Lightspeed, Norwest, and Endeavor Catalyst.
Following this round, Rain's valuation reached $19.5 billion, with total funding exceeding $338 million. Rain also disclosed an annualized transaction volume of over $3 billion, serving over 200 partners, including Western Union, Nuvei, and KAST.
The most notable aspect of these figures isn't just the funding amounts themselves, but the time density. Rain progressed from Series A to Series C within 10 months, indicating that institutional capital is beginning to view stablecoin payments not just as a crypto concept, but as enterprise-grade financial infrastructure.
From Human Cardholders to AI Agents: Rain Aims to Secure the Programmable Payment Gateway
Rain's product line is no longer just a stablecoin card.
On June 9, 2026, Rain launched Agent Control Layer. This feature allows enterprises and developers to define the spending boundaries for AI Agents at the infrastructure level, including acceptable merchant categories, approved merchants/payees, transaction amounts, transaction frequency, number of available Agent cards, and card validity periods. Rain stated these rules are enforced before card issuance or transaction initiation, not after the fact.
This extends Rain's payment system from "humans using cards" to "machines using money." If AI agents in the future need to subscribe to software, book travel, execute procurement, or pay suppliers, the first problem enterprises need to solve is not the payment button, but the permission boundary: who can spend, when, to whom, and up to how much. Stablecoins provide programmable money, card networks provide merchant reach, and the control layer gives enterprises the confidence to embrace this automation.
From Agent Control Layer to the card rewards program (Rewards), Rain's path is becoming increasingly clear. Its goal is not a point product, but a stablecoin payment operating system: Cards are responsible for reaching merchants, wallets for holding assets, on/off ramps for connecting fiat, Rewards for retention, and the Agent Control Layer for managing permissions and compliance in automated payments.
The mainstream adoption of stablecoin payments may not happen within exchange interfaces. It might appear in a corporate card, a cross-border salary payment, a cup of coffee, or a virtual card temporarily generated by an AI Agent. Rain aims to be behind these transactions, enabling on-chain funds to flow where users don't even notice.
