Decal

Decal is a stablecoin payments platform built on Solana that lets brick-and-mortar and e-commerce merchants accept digital dollar payments through their existing point-of-sale infrastructure. Rather than replacing a merchant terminal or workflow, Decal layers on top of it, currently supporting Square devices with Clover, Lightspeed, and Shopify integrations listed as forthcoming. The tagline "simple payments and loyalty for everyone" captures two distinct but related products: a payments rail and a stored-value loyalty program, both designed to move money at blockchain speed without requiring merchants or customers to become crypto-native.

The Problem

Traditional card processing extracts significant value from merchants on both sides of a transaction. Processing fees typically run 3 to 3.5 percent per sale, settlement takes three to five business days, and chargebacks can reverse revenue weeks after a sale closes. Stablecoin payments offer a structural alternative — near-zero fees, finality in seconds, and no chargeback mechanism — but adoption at the point of sale has stalled on the complexity of the checkout experience. Most stablecoin payment attempts require customers to download a wallet, manage private keys, and understand network fees. Decal takes the position that the blockchain layer should be invisible to both parties.

How It Works

At checkout, the merchant POS generates a QR code. The customer scans it, selects their preferred stablecoin, and confirms. The transaction settles on Solana in seconds. No app download, no account creation, and no learning curve is required on the customer side. Merchants see the transaction clear in their existing Square workflow exactly as a normal sale would appear, except that stablecoin funds land immediately in a Decal balance rather than waiting for a card network batch.

Backend wallet infrastructure is provided by Para, whose embedded wallet technology handles key management and on-chain interaction invisibly. This design reflects a broader pattern in Solana consumer applications: abstract the blockchain entirely and compete on the product experience.

Decal charges a flat 1 percent processing fee, compared to the 3.5 percent or more that card networks collect. The platform estimates merchants retain up to 5.7 percent more revenue per transaction relative to traditional card acceptance, accounting for the fee spread, chargeback risk, and the value of instant settlement.

Supported Stablecoins

Decal accepts USDC, USDT, PYUSD, USDG, and USDS. Multi-stablecoin support means customers are not constrained to a single issuer, which reduces friction and broadens the potential customer base across different wallet configurations.

Stored Value and Loyalty

Beyond the payments rail, Decal offers a stored-value loyalty program that inverts how merchants typically fund rewards. In conventional loyalty programs, discounts and perks come out of merchant margins. The Decal model shifts the funding source to yield.

When a customer preloads a balance at amounts such as twenty-five, fifty, or one hundred dollars, those funds sit in an interest-bearing account earning roughly 6 to 8.1 percent APY under current market conditions. Merchants earn yield on idle customer balances, and that yield funds the rewards program rather than reducing per-transaction margins. Customers who preload receive loyalty benefits; merchants earn yield on working capital; neither side surrenders margin to the arrangement.

Two early merchant partners illustrate this in practice. The Barb Shop, a barbershop in San Francisco, uses the stored-value program to offer rewards to returning customers, drawing on yield from preloaded client balances. Raposa Coffee in New York ran a month-long popup using Decal integrated with an existing Square terminal to onboard customers to stablecoin payments without disrupting existing cafe operations.

Solana Ecosystem Position

Decal was a winner of the Solana Breakout Hackathon and subsequently accepted into Colosseum Accelerator Cohort 3, one of ten startups selected from more than 1,400 hackathon submissions, representing an acceptance rate of roughly 0.68 percent. The Colosseum program is an eight-week accelerator run both online and in San Francisco, culminating in a private investor demo day. Selection signals institutional validation within the Solana builder community and connects Decal to a network of Solana-native investors and mentors.

Solana is architecturally well-suited to point-of-sale payments. Sub-second finality and transaction costs measured in fractions of a cent make it practical to settle a small retail purchase on-chain where networks with higher fees would not be economically viable. Decal sits alongside other Solana payments-layer projects including Solana Pay itself, but focuses specifically on the merchant integration and loyalty layer rather than protocol-level infrastructure.

Traction

As of recent reporting, Decal has processed more than 4.1 million dollars across over 42,000 completed payments. These figures represent real commercial volume from live merchant deployments, not testnet activity.

Token

Decal has not issued a protocol token. The platform operates with existing stablecoins as the settlement asset. There is no governance token, utility token, or speculative instrument associated with the project at this stage.

Security and Audits

No public security audits have been disclosed. Decal explicitly describes itself as a financial technology company rather than a bank, and notes that funds held on the platform are not FDIC-insured. Users should evaluate custodial and counterparty risk accordingly.

Team

The founding team has not been publicly disclosed. Decal is a US-based startup operating within the Solana ecosystem.

Summary

Decal addresses a specific, underserved segment of the stablecoin payments market: the independent merchant who will not redesign checkout flows or retrain staff to accept crypto. By integrating directly with Square and abstracting the blockchain via Para embedded wallets, Decal competes on merchant convenience rather than ideology. The stored-value loyalty model distinguishes Decal from payment processors that compete purely on fee compression, funding rewards from yield rather than merchant margins. With more than 4.1 million dollars processed, Colosseum accelerator backing, and a merchant-first product philosophy, Decal represents a practical application of Solana speed and cost advantages to the problem of everyday commerce.