The Solana Foundation and software developer Anza scheduled the Alpenglow mainnet upgrade for October 21, 2026, targeted for epoch 1064 at approximately 15:00 UTC

Overview Debates Related claims Topics Sources

StarkWare introduced the STRK20 framework on June 9, 2026, providing shielded balances and private transfers for supported ERC-20 assets on Starknet.

StarkWare launched Shadow Accounts on the Ethereum layer-2 network Starknet on October 13, 2026, introducing persistent application-specific identities.

Babylon is conducting another audit round on finalized changes to its Aave V4 integration with Coinspect, ABDK, and Zellic prior to mainnet deployment

Plasma One launched publicly in June 2026 as a stablecoin-native neobank where stablecoins serve as the central account feature.

OffMarket became publicly available on or around October 14, 2026, following a private alpha in July 2026, invite-only access in August 2026, and mainnet privacy trading in September 2026.

Autheo launched its mainnet on May 14, 2026, as a Layer-0 operating system with an integrated Layer-1 blockchain supporting validator staking and transaction fees.

Coinbase supports a staged transition approach, such as a 1-of-2 setup, allowing active wallets to be spent using either a classical key or a post-quantum key before legacy signature rules are finalized

A complete post-quantum upgrade recommended by Coinbase must protect exposed and newly created funds, fit within Bitcoin's block space, preserve full node validation, and support both institutional custody systems and ordinary wallets

Bitcoin developers are evaluating post-quantum proposals such as P2MR (BIP-360) and P2TRv2, but consensus changes take years because Bitcoin's decentralized architecture lacks a central authority to enforce upgrades

Bitcoin currently verifies digital transaction signatures using the classical cryptographic algorithms ECDSA and Schnorr, which existing non-quantum computers are unable to reverse-engineer

Coinbase recommended that post-quantum Bitcoin software evaluations prioritize implementations that avoid timing leaks, run reliably across platforms, and remain secure if random-number generators fail

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

If Bitcoin supports stateful post-quantum signature schemes, Coinbase recommends it must also offer stateless options to prevent key-reuse errors that could lead to signature forgery

Coinbase recommends that the debate over handling dormant, late-migrating, or lost coins be conducted separately from technical work on post-quantum signatures to avoid delaying general network protections

Coinbase recommends flexible post-quantum output designs, such as P2MR (BIP-360) and P2TRv2, that separate the transaction container from the signature scheme

Coinbase urges the Bitcoin community to begin quantum-resistant migration immediately, well ahead of any formal announcement that a cryptographically relevant quantum computer has been built, because consensus changes take years

Bitcoin should immediately begin software preparations for post-quantum cryptographic migration

Proposed solutions for dealing with Satoshi Nakamoto's coins in a post-quantum transition include burning them or using them to pay for miner tail emissions

Solana network validators must run client software built on Agave 4.3.0 to execute the Alpenglow mainnet migration scheduled for October 21, 2026