Crypto and macro roundup for Sept. 20-21: Saudi Arabia exits mBridge, ZETA heads to Solana
A dense set of crypto, AI and macro developments emerged between Sept. 20 and Sept. 21. Saudi Arabia’s central bank said it is no longer part of the mBridge cross-border central bank digital currency project, adding that the move was not tied to pressure from the United States. In the U.S., Coinbase Derivatives filed a rulebook tied to planned single-stock perpetual futures, but the proposed $100 billion market-cap threshold would exclude Coinbase itself, along with Strategy and smaller crypto-linked equities. On-chain activity also drew attention: meme trading platform gmgn moved 23,550 BNB in fee revenue to Pionex over the past week, the TRUMP team shifted another large batch of tokens to BitGo, and a whale that had previously sold ETH at a profit bought back $20 million worth of Ether from Binance. Elsewhere, Token Unlocks flagged a heavy week ahead for XPL, H, SOSO and several other tokens, while ZetaChain governance approved a proposal to migrate ZETA to a native Solana SPL token on a 1:1 basis. The update stream also included a revised Staked SEI ETF filing from Canary Capital, comments from CZ on how he runs his X account, confirmation that Vitalik Buterin will speak remotely at ETHShanghai 2026, and new projections from Wall Street banks that U.S. Treasury bill issuance could reach roughly $1 trillion over the next year.
