We use Polygon blockchain.

Our decision was made based on multiple criteria:

1. Low fees: Polygon allows cheap transactions;
2. Community: for us, it is the number of established projects in the blockchain ecosystem that have enough traction to require Q&A. Ethereum/Polygon is the winner for us in that area;
3. Bridge to Ethereum: Ethereum is still the primary blockchain for decentralized asset trading. Polygon to Ethereum bridge allows us to mint tokens on Polygon and transfer them to Ethereum as needed. That bridge seems fairly secure;
4. No risk of being an early adopter: Ethereum already has some significant credibility. Polygon follows what Ethereum does.