- Solana core team details Rotor, a one-hop relay layer to replace Turbine in the Alpenglow upgrade.
- Developer says Rotor delivers blocks faster and more uniformly than Ethereum’s multi-hop GossipSub.
Solana software firm Anza has outlined Rotor, a new block propagation layer in the forthcoming Alpenglow upgrade, with a developer stating it distributes data faster and more uniformly than Ethereum’s peer-to-peer gossip.
Anza details Rotor’s one-hop relay design to replace Turbine
Rotor collapses Solana’s current Turbine retransmit tree into a single dissemination layer. The slot leader slices each block, applies erasure coding to produce shreds, and dispatches those shreds to stake-weighted relays.
Relays then broadcast globally in one round, prioritising the next scheduled leader to smooth slot hand-offs.
The aim is to reduce propagation time and tighten the distribution tail so that most validators receive the block at nearly the same moment, which can lower missed slots and reduce the chance of short-lived forks caused by skewed arrivals.
Documentation from ecosystem contributors describes Rotor as compatible with multicast and focused on removing bandwidth bottlenecks by rewarding relays for data distribution.
The approach differs from Turbine’s multi-layer tree with a large fan-out, simplifying the forwarding path while preserving redundancy through erasure coding.
Ethereum’s multi-hop GossipSub spurs direct comparisons from Solana developer
The Anza developer framed the claim against Ethereum’s networking stack, which relies on libp2p GossipSub where blocks are broadcast to a subset of peers and traverse the network over several hops.
1/ Rotor is Solana’s new block propagation method in the Alpenglow upgrade. It is a major improvement in how blocks move across the network. Rotor delivers data faster and more uniformly than Ethereum’s peer to peer gossip 🧵 pic.twitter.com/ozEsttskAi
— Brian (@0xbrw) August 13, 2025
Research discussions in the Ethereum community continue to explore methods such as random linear network coding to accelerate dissemination and reduce hop-by-hop delays for larger messages.
In practical terms, the contrast is between a single-hop relay layer designed to deliver shreds to nearly all validators at once and a mesh-based approach that propagates full messages across multiple steps.
While the efficacy of Rotor under adversarial conditions will be tested during rollout, the architectural target is consistent arrival times and predictable bandwidth usage across the validator set.
Alpenglow pairs Rotor with Votor, a revamped voting and finalisation path intended to compress end-to-end confirmation windows once networking variability is reduced.
Public materials from Anza and ecosystem validators indicate testnet milestones ahead of mainnet activation targeted for late 2025 or early 2026, subject to implementation and governance.
The disclosure positions Rotor as a core pillar of Alpenglow’s networking simplification. For application developers, the stated benefits are steadier confirmation cadence and lower variance during load.
For validators, the objectives include fewer late block arrivals and more predictable outbound traffic as relays assume a defined role in dissemination.
As of now, Solana’s price stands at $195.56 on Binance, marking a precise 4.51% drop over the past 24 hours, with a daily range between $187.78 and $205.47.
