Tezos activated the Tallinn protocol upgrade through a decentralized, on-chain governance process involving bakers and community members, with contributions from Nomadic Labs, Trilitech, and Functori. The 20th upgrade shortens layer-1 block times to six seconds, expands validator participation, and strengthens security through universal validator attestations using BLS signatures.
In addition to faster block production, the update adds an Address Indexing Registry that can cut application storage requirements by up to 100x, lowering costs and increasing throughput for enterprise apps, NFT platforms, and large ledgers built with Michelson. Tallinn also reinforces Tezos’ role as a settlement layer for Etherlink, its EVM-compatible layer-2, which now benefits from L1 finality in two blocks, or 12 seconds.
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