Wallet

Fireblocks, Robinhood, and MetaMask have introduced the Open Transaction Layer (OTL), a shared standard intended to connect traditional finance and crypto participants. The initiative is designed to let MetaMask's 100 million users interact with tokenized equities and other institutional-grade assets from a self-custodial wallet, using common rails for identity, messaging, and transaction coordination.

On May 28, 2026, Trezor rolled out native stablecoin yield for USDC and USDT inside Trezor Suite v26.5.2, allowing users to deposit, withdraw, and claim rewards without leaving the app. The feature uses Morpho Vaults (USDC Prime and USDT Prime) curated by Steakhouse, with rates that vary based on borrowing demand and no lockup period. Trezor said the update is available on desktop now and targets more than 2 million users, while full mobile support is expected later in 2026.

South Korea’s Digital Asset Exchange Alliance (DAXA) has rolled out a new compliance standard requiring local crypto exchanges to revoke API keys suspected of being shared or misused. The move comes as the Financial Supervisory Service says automated trading represents about 30% of domestic crypto turnover, prompting tighter monitoring steps such as IP whitelisting and mandatory re-authentication.

Visa is processing roughly 90% of on-chain crypto card payments as total crypto card spending reached a record $7.8 billion. Monthly crypto card volume has risen 230% since May 2025, helped by card-based spending of stablecoins held in self-custody wallets. Visa's spending through Jupiter Global climbed 648% over the past two months, while central banks and financial firms also tested blockchain settlement rails via Project Agorá.

SoFi says it has introduced its SoFiUSD stablecoin directly inside its banking app, positioning itself as the first U.S. national bank to bring a stablecoin into a consumer banking platform. Users can buy, sell, hold, and convert SoFiUSD in-app, with initial support on Ethereum and Solana and a broader rollout planned over the coming weeks as app updates arrive.

x402 payment volume dropped from $5.15 million in November 2025 to $1.19 million by May 2026, while transaction counts recovered to 2.89 million in May at an average $0.52 each. The pattern points to agents making frequent sub-dollar payments for APIs, data, and compute, where manual wallet approvals can cost more than the transfer itself.

Ethereum co-founder Vitalik Buterin highlighted Kohaku's wallet feature that generates a new Ethereum address for each dapp a user connects to, arguing that relying on one global address is a privacy norm that needs to change. The approach aims to reduce onchain metadata linking across activities such as DEX use and lending, while Kohaku also advances privacy tooling through its v0.0.1-alpha.21 update that enables ERC-4337 relaying for Railgun transactions.

Kenyan Treasury Cabinet Secretary John Mbadi said on May 25 that the Finance Bill 2026 does not add new taxes on cryptocurrency transactions, pushing back against rumors that also included claims of new levies on bread and digital content monetization. He said the bill's virtual-asset changes focus on closing regulatory gaps through reporting and record-keeping, while a KPMG technical review says expanded disclosure duties could raise compliance costs for VASPs and widen data-sharing mechanisms with foreign tax authorities.

OKX has upgraded its X Layer into a permissionless "Exchange OS" designed to support spot trading, perpetual futures, and prediction markets, with a unified account that lets users trade across venues from one shared pool of funds. The company says builders can launch markets with more autonomy while the protocol handles the underlying plumbing. OKB rose 15% on the update and reached $98.8, though it was meeting resistance near the 200-day SMA at the time of writing.

On Monday, May 25, an unidentified wallet sent 107.1302 BTC (valued at more than $8.2 million) to a bitcoin burn address, making the funds permanently unspendable. The transfer, first flagged on Tuesday by Timechainindex.com founder Sani, lifted the address balance to 807.238 BTC, valued at $62.15 million. No onchain identity or clear connection to a protocol launch has been linked to the burn.