CALWIRE Crypto Report (Saturday, September 19, 2026)

By Calwire Markets Desk

  By Calwire Markets Desk

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Today's top story: Visa to close Crossmint memecoin rewards loophole following The Block investigation: report. This roundup covers 12 stories from The Block, Decrypt, CoinDesk, CryptoSlate, and Cointelegraph.

Visa to close Crossmint memecoin rewards loophole following The Block investigation: report
Though the Crossmint-powered memecoin sales are still live on both apps, Visa's grace period is expected to end next week, per the... — The Block

Grayscale Is Making Its Red-Hot Zcash ETF More Affordable
The Zcash ETF is splitting its shares three ways after pulling in more than $233 million in under a month, as Wall Street piles in... — Decrypt

'We have lost control': Crypto pioneer warns AI could trigger systemic banking and infrastructure shocks
Marc van der Chijs sold much of his bitcoin to invest in AI. Now, growing concerns about the technology accompany a move to put so... — CoinDesk

Ripple says asset managers are preparing for XRP Ledger’s next payments upgrade
The upcoming Batch V1.1 can make linked asset and payment transfers succeed together or fail together, and Ripple says commercial... — CoinDesk

Bitcoin faces an October 18 test as Trump prepares new Russia tariffs — CryptoSlate

Solana's Heartbeat Quickens: Block Times Fall 17% in Latest Speed Upgrade
The network's clock just sped up again, but the extra speed goes to freshness, not capacity. — Decrypt

'The orange tie stays': Michael Saylor responds to venture capitalist's bitcoin obituary
"Bitcoin feels like the CD in the age of Spotify, the DVD in the age of Netflix," wrote Jason Calacanis. — CoinDesk

Did RWA futures really overtake crypto? Only if you ignore 90% of the market — CryptoSlate

Robinhood Chain fees collapse 97% even as transactions stay near record highs
Seven-day average fees fell 82% while transaction counts slipped 6%, with about $1.5 billion a day still changing hands. — CoinDesk

Why Wall Street giants build tokenization money for institutions, not regular consumers
JPMorgan and Citi move billions in tokenized deposits, but only among their branches. A U.K. challenger bank is about to do someth... — CoinDesk

Bastion wins conditional OCC approval for national trust bank charter
Bastion Platforms National Trust Company will offer stablecoin custody and wallets, payment infrastructure and white-label issuanc... — Cointelegraph

Brazil blocks stablecoins from key cross-border payment rail as $1.1 trillion market faces new limits

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