Starknet is suspected to be testing the cross-chain transfer of STRK tokens on the Sepolia testnet

Data on the Ethereum Sepolia testnet shows that STRK tokens were deployed on the Sepolia testnet 36 days ago, and are suspected to have started cross-chain testing on the Starknet testnet 10 hours ago. Starknet appears to be conducting a trial of cross-chain transfer of STRK tokens from L1 (Layer 1, i.e., the basic blockchain layer) to L2 (Layer 2, i.e., the network layer built upon the basic blockchain). Among them, one transaction involves transferring 1234 STRK test coins.