Blockchain Integration

Mintos.Pro leverages Solana blockchain for fast, low-cost NFT operations. We use Metaplex Core (mpl-core v1.6.0) as our NFT standard, providing full on-chain metadata, plugin system, and hierarchical collections.

Solana Network

Solana provides sub-second finality with transaction costs under $0.01. We use QuickNode dedicated endpoints for both mainnet and devnet, with public RPC fallbacks. The platform supports both networks with complete isolation.

Metaplex Core Standard

Metaplex Core is the next-generation NFT standard on Solana. Unlike older standards, Core NFTs have full on-chain metadata, a powerful plugin system, and native collection support. We use version 1.6.0 with UMI framework 1.4.1.

Plugin Architecture

Metaplex Core plugins extend NFT functionality: Royalties plugin handles creator revenue sharing, Attributes plugin stores trait data with display types, UpdateDelegate allows platform metadata updates, and TransferDelegate enables marketplace transfers.

Auction House System

Our marketplace uses a 3-wallet architecture for security: Authority Wallet controls settings, Transfer Delegate Wallet (AES-256-GCM encrypted) handles buy/sell operations, and Treasury Wallet receives platform fees. The main marketplace is deployed at 48QSSvTmhDZbK4nQLtWujPj7dWE17SRchgzWqXTZTwXN.

Blockchain Verification Service

The BlockchainDataChecker service is our source of truth. It verifies transaction confirmations before saving to database, detects stale RPC cache data through response time analysis, and uses reference assets for RPC health monitoring.

Staleness Detection

RPC response times indicate data freshness: under 500ms is Fresh, 500-2000ms is Potentially Stale, over 2000ms is Definitely Stale. The system automatically retries with delays when stale data is detected.

Platform Wallets

Separate wallets for operations (pays gas, signs transactions) and revenue (receives fees). Devnet operations: 2radGNWAbafPBjSfVftHcvJbSVHw4TUW6YSXnetgpTea. Mainnet operations: 3JF6cLgXVSzkVzv72BhrT6txYn6B32febXsfUzTY5MMr.

402 Payment Required Pattern

For platform-paid operations, if the platform wallet has insufficient balance, the API returns 402 with funding details. The frontend prompts users to fund the platform wallet, then retries. This enables single-payment-prompt user experience.

Decentralized Storage

Irys (formerly Bundlr) provides permanent decentralized storage for NFT metadata and assets. Files are stored with "pay once, store forever" model. The platform pays upload costs, and content is accessible via gateway.irys.xyz.