Odaily Planet Daily News Cardano core developer Sebastian Guillemot revealed that its first zero-knowledge (ZK) transaction Halo2 has been launched on the mainnet, with the transaction hash being '71579b77ab7d974eb31ef1b50d58f14f2ceac2bcf540aac50f777f56a8f24bff'. Input Output Global noted in another article that it has launched the Halo2 ZK Proof verification activity. The direct goal of this move is to serve the Adaptive Threshold Multi-Signature Scheme (ATMS), which will enable the verification of 50 out of 90 signatures. When simulating the practical use case of this smart contract protocol, IOHK stated that the testnet recorded lower transaction fees. The token lock only incurs a transaction fee of 0.16 ADA. Additionally, the total unlocking fee on Halo2 is 2.03 ADA. (CoinGape)