ABN AMRO and German regulatory platform 21X have completed a joint proof-of-concept (PoC) on the Polygon Amoy testnet, enabling the listing of tokenized assets and e-currency tokens. By deploying 21X's on-chain order book smart contract, both parties can complete the transaction of tokenized cash and tokenized assets in a single transaction. It is worth noting that, as a company dedicated to building a blockchain stock exchange, 21X received approval from the German financial regulator BaFin in December 2023.