Solana validators should be prohibited from selling private transaction data

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Nym CEO Harry Halpin criticized the crypto wallet disclosure rule in Amendment I-CF821, citing a case where a French tax agent allegedly sold crypto holders' tax data to criminals

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

StarkWare demonstrated a Private Know Your Customer system on June 23, 2026, using zero-knowledge proofs on mobile devices to verify identity criteria without exposing full passport documents.

StarkWare announced the launch of Shadow Accounts on October 13, 2026, allowing decentralized finance users to create persistent, application-specific identities without exposing links to their primary crypto wallets.

StarkWare introduced its STRK20 privacy framework on June 9, 2026, providing zero-knowledge shielded balances, private transfers, and viewing keys for auditing ERC-20 assets on Starknet.

StarkWare launched OffMarket, a privacy service that enables users to trade on Polymarket without publicly linking their trading positions to their primary accounts.

Financial Privacy Inc. holds OffMarket's master viewing key in a secure enclave under a multisignature arrangement with StarkWare, screening deposits against sanctions and reviewing legal requests for transaction data.

When withdrawing from a Starknet Shadow Account, funds return to shielded STRK20 balances using zero-knowledge proofs managed by a Starknet wallet

Starknet Shadow Accounts allow users to manage decentralized finance positions without publicly linking their application activity to primary cryptocurrency wallets.

OffMarket cannot mask public transaction sizes, order prices, execution timing, or public USDC pool transfers, which can potentially expose trader identities during low liquidity periods.

Starknet's Shadow Account balances and transactions remain publicly visible on the blockchain, but the connection to a user's primary wallet address is obscured

Starknet Shadow Accounts hold public ERC-20 tokens, allowing blockchain observers to examine transaction histories once a specific Shadow Account address is identified.

Users fund Starknet Shadow Accounts by depositing supported assets into a shared privacy pool represented through encrypted STRK20 balances.

Pirate Chain developers acknowledged that the cryptographically hidden nature of Sapling pool transactions complicates efforts to trace where the 39.8 million unauthorized ARRR tokens went

Pirate Chain enforces mandatory zk-SNARKs privacy shielding across 100% of its network transactions

Following the unauthorized minting of 39.8 million ARRR tokens on October 14, 2026, the illicit tokens were rapidly moved into Pirate Chain's Sapling shielded pool

Canton Network's privacy controls prioritize institutional secrecy over public market transparency

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