Arc operates under proof-of-authority rules at launch with a permissioned validator set, with plans to explore a transition to a permissioned proof-of-stake model in 2027.

Overview Debates Related claims Topics Sources

Solana scheduled an upgrade to replace the network's legacy Tower BFT consensus mechanism on Wednesday, October 21, 2026

Solana's October 2026 upgrade replaces on-chain vote transactions with direct validator-to-validator certificate bundling

Babylon Labs said Babylon's governance representatives will manage the underlying Trustless Bitcoin Vaults protocol configuration for the Aave V4 integration, including emergency controls and participating actor sets

The Pirate Chain development team proposed a blockchain rollback to revert the network to its state as of 20:00 UTC on October 14, 2026, discarding all subsequent blocks

Early voting on Starknet's October 15, 2026 Layer 1 governance proposal showed over 99% of cast voting power supporting research into transitioning to an independent Layer 1 blockchain

The Starknet Snapshot poll, launched October 15, 2026, offers voters three choices: approve funding further research into becoming an independent Layer 1, oppose further research, or remain neutral pending additional information

On October 15, 2026, Starknet initiated a seven-day non-binding governance vote on Snapshot asking STRK holders whether to research transitioning from an Ethereum Layer 2 to an independent Layer 1 blockchain, where 'Yes' does not trigger immediate network migration

ENS Labs expects to publish transaction records and a verification script after its administrative handover so community members can verify it no longer holds privileged permissions over ENSv2 contracts.

The Alpenglow upgrade scheduled for October 21, 2026 replaces TowerBFT, the consensus mechanism used by Solana since its 2020 launch, with a new consensus mechanism named Votor

During the October 21, 2026 Alpenglow migration, Solana will operate under its legacy voting system for the first 5,000 slots before transitioning to Alpenglow approximately 18 minutes later

Under the Alpenglow upgrade scheduled for October 21, 2026, Solana validators exchange votes directly off-chain and aggregate approvals into a certificate that finalizes blocks after one or two voting rounds

Prior to the Alpenglow upgrade scheduled for October 21, 2026, Solana validators submit voting approvals as transactions recorded directly on the blockchain

Excluding validator votes from block data provides a more accurate measure of Solana network activity

Off-chain validator voting is an acceptable tradeoff for faster transaction finality on Solana

Alpenglow replaces validator voting charges of approximately 1 SOL per epoch with a flat network admission fee of 0.8 SOL per epoch

Decryption of pending transactions on Aptos requires a stake-weighted threshold majority of existing validators specified under Aptos Improvement Proposal AIP-144.

Aptos validators agree on transaction block ordering in the mempool while blind to transaction contents, collectively decrypting payloads only after consensus finalizes the block.

Aptos reported that transaction blocks finalize in less than one second on its mainnet consensus implementation.

Ontology utilizes Verifiable Byzantine Fault Tolerance consensus, combining staking and validation to permit participating nodes to jointly pause the network during high risk

Ontology should publish a full technical disclosure following mainnet security halts