In this week update by @tuma we feature the latest release of the Cashu Development Kit (CDK) (@Cashu), which introduced a new BDK on-chain payment backend based on NUT-30. We also cover the effort from the Marmot protocol (@marmot) to draft a new set of specifications to improve the reliability of the system. We finally present some interesting news from the Bitcoin ecosystem. Notably, Bark by Second (@Second) available on mainnet, a new vulnerability found in Bitcoin Core, improvements on splicing, and a draft BIP for a new testnet. View article →