Extension Changelog

Browser extension release history.

0.9.5 — 2026-08-08

New: gasless same-chain USDT — send USDT with the fee paid in USDT itself, no USDC needed — on Arbitrum, Polygon, Ethereum and MegaETH, alongside the existing Solana USDT support.
New: USDT0/LayerZero bridge, restricted to the one route that's actually live today — Arbitrum → MegaETH. MegaETH is a receive-only destination for now.
Balance, Send and Bridge screens now handle multiple stablecoins side by side, with honest USDT vs USDT0 ticker labels per network.
Bridge selector is now network-first, and the fee is always shown in the asset you're actually sending — never a different one.
Transaction history now works on MegaETH and other non-USDC chains, including Solana USDT history, with token support driven by the network registry instead of hardcoded chains.
Receive screen now includes a token picker, plus a dedicated USDT glyph and locale-aware decimal formatting.
LayerZero bridge progress is now shown honestly step by step instead of a generic spinner.
Fixed: Polygon's USDT ticker now correctly reads USDT0.

History: Monad now uses the Etherscan V2 API after monscout.cp0x.com went offline — transaction history on Monad loads again instead of failing against a dead explorer.

Security: pre-release audit hardening — history gap-fill now verifies each eth_getLogs result against the requested token contract before displaying it, closing a path for a malicious or misconfigured custom RPC node to inject forged transaction rows.
New custom-RPC/relayer indicators next to each network on the Balance screen, and a matching badge at the top of the History screen.
History now refreshes automatically right after a send or bridge settles, instead of waiting for the next manual reload.
Reliability: fee-quote reads on send and bridge that hit a rate limit or timeout now retry automatically or show a clear "fee unavailable — retry" message, instead of silently leaving Continue disabled.
Visual polish: UI brought fully in line with the shared Sigma9 design-system tokens.
Hardened CI and end-to-end regression testing, gated on every pull request.

New mainnet networks: Ethereum, Unichain, Optimism, and Polygon — joining the existing Arbitrum, Base, and Solana.
USDC is now gasless across all seven networks, with gasless CCTP v2 bridging between every pair.
New dedicated Networks screen to enable or disable individual chains, with network icons.
Security: the decrypted seed is now never persisted — it is used only in memory per signature and wiped immediately after.
Security: double-spend guard that verifies on-chain state before resending any transaction.
Security: anti-address-poisoning and anti-clipboard-clipper hardening on send and bridge.
Security: exact-pinned crypto-critical dependencies.
Configurable RPC and relayer nodes, with opt-in failover (off by default).
Confirm screen now shows source-chain and before → after balances.
Numerous bridge and send balance-guard and error-handling fixes.

Sigma9 — gasless self-custody. Network fees paid in the asset you hold (USDC or USDT). Keys stay on your device.