Sei Labs maps out how blockchains could let many validators build each block at once Researchers from @Sei_Labs, the team behind @SeiNetwork ($SEI), and Solana developer @anza_xyz published a paper comparing 39 designs where several validators add transactions to the same block in parallel. The goal is to stop any single leader from deciding alone which transactions get in and in what order. The study found that adding more proposers does not guarantee that a transaction gets included, and that hiding transactions until a block is set does not stop someone from reacting last. The authors say these designs also need working recovery, payment, and coordination rules to deliver reliable service.