Introduction Tezos (XTZ) has unveiled Tallinn, its latest protocol upgrade, marking a significant step in the network’s ongoing effort to boost throughput and reduce cost. The update, Tezos’ 20th protocol revision, lowers base-layer block times to about 6 seconds and introduces an optimization that could shorten settlement times for on-chain transactions. Central to Tallinn is a shift in how blocks are attested: all network validators, known as bakers, can attest to every block, a change enabled by aggregate BLS cryptographic signatures. The development aims to reduce latency and storage overhead, potentially enabling broader use cases on the Tezos ecosystem. Key Takeaways - Tallinn is Tezos’ 20th protocol upgrade and targets faster finality by enabling all bakers to attest to each block, rather than a subset. - The upgrade uses BLS signatures to aggregate attestations, significantly lightening node workloads and potentially enabling further reductions in block time. - An address index...