On August 28, the largest cryptocurrency-themed event in Japan, the WebX Conference, opened in Tokyo. Jun Watanabe, the Chairman of Sony Block Solutions Labs, and Sota Watanabe, the CEO of Startale Labs (co-founder of Astar Network), introduced the specific details of Sony's Layer2 network, Soneium, at the conference. At the same time, Soneium announced that the testnet Spark is now live and revealed the initial launch partners of the testnet. The technical partners include Astar Network, Optimism, Alchemy, Circle, Graph Protocol, Chainlink; infrastructure partners include Pyth Network, Alchemy Pay, Privy, RAIR, Reservoir, Sentio, Sequence, thirdweb, Transak, Web3Auth, and more.