7 min read · 12 sources

Canada’s six largest banks - BMO, CIBC, National Bank of Canada, RBC, Scotiabank, and TD - just announced they’re jointly exploring a Canadian-dollar tokenized deposit system. The first phase is about moving tokenized deposits efficiently between institutions, which is the boring plumbing that actually matters for whether this stuff ever leaves the pilot stage. It follows OSFI’s ruling that tokenized deposits are “not legally distinct from traditional deposits,” which clears the regulatory fog that usually kills these projects.

The CFTC is cracking down on prediction contracts that let you bet on whether someone will say a specific word. The agency’s Division of Market Oversight issued an advisory warning these “mention markets” carry heightened manipulation risk, and it’s already charged a former White House teleprompter operator and ex-Rep. George Santos over trades tied to advance knowledge on Kalshi. The message to exchanges: assess whether the person controlling a contract’s outcome faces independent obligations that deter manipulation.

Tether holds roughly 80% of its $183 billion in reserves in US Treasuries, and USDT was delisted from all EU exchanges on July 1.

Canada's Big Six Banks Move Tokenized Deposits Between Institutions

Source: theblock.co ↗

The tokenized deposit system from BMO, CIBC, National Bank of Canada, RBC, Scotiabank, and TD is a joint exploration, not a live product. The first phase focuses on inter-institutional transfers of tokenized Canadian dollars, which is the settlement layer problem that depository systems need to solve before they’re useful.

The legal foundation matters more than the tech. OSFI’s clarification that tokenized deposits aren’t legally distinct from traditional deposits means these instruments don’t need a new regulatory bucket. This builds on March’s Project Samara pilot, which tested blockchain-based government bond issuance. For engineers, this is the pattern to watch: when regulators say a token is just a deposit, the banking rails can adopt distributed ledgers without re-architecting their legal liabilities.

CFTC Puts a Target on "Mention Markets"

Source: theblock.co ↗

The CFTC advisory is aimed squarely at prediction contracts that pay out based on whether someone says a specific word or attends an event. These contracts can only be listed in limited circumstances under the Commodity Exchange Act, and the agency is telling exchanges to vet whether the person controlling the outcome faces independent obligations that deter manipulation.

The agency has already charged a former White House teleprompter operator and ex-Rep. George Santos over trades tied to advance knowledge of “mention markets” on Kalshi. The manipulation vector is obvious: if you control the teleprompter, you control the payout. The advisory signals that exchanges listing these contracts need to verify the oracle - in this case, a human being - has reasons not to cheat that are stronger than the potential payout.

Rain's Real-Time Funding Kills the Pre-Funded Card Balance

Source: rain.xyz ↗

Rain’s real-time funding for stablecoin cards removes the single most annoying part of the cardholder experience: monitoring and replenishing a separate collateral balance. Now a user connects a wallet and approves a spending limit once. Each purchase commits only the needed amount to the collateral contract at authorization, with the rest staying in the wallet. The approval is revocable.

The feature is in beta for card programs where Rain manages authorization, launching with USDC on Base and Arbitrum and USDT0 on Plasma. For engineers, the significance is in the authorization flow: the collateral contract is funded per-transaction rather than pre-funded, which simplifies the state machine and reduces the failure modes where a card declines because the collateral balance ran dry.

Circle Lets Bitcoin Holders Borrow USDC Through Morpho

Source: thedefiant.io ↗

Circle’s Bitcoin-backed USDC borrowing for Mint clients routes through Morpho’s Arc market. Deposited BTC is wrapped as cirBTC and used as collateral. The cirBTC/USDC market grew roughly 10x in five days, from $1.37 million on September 17 to $14.3 million in borrowed USDC against 287 cirBTC. Galaxy and Keyrock supply nearly all the dollar liquidity.

The architecture splits responsibilities: Circle issues the wrapper and handles wallet infrastructure, while Morpho governs loan terms. This gives institutional Bitcoin holders access to USDC without liquidating their BTC positions. For engineers tracking cross-chain collateralized borrowing, this is a notable integration of Bitcoin collateral into DeFi lending - the wrapper handles the custody question, Morpho handles the liquidation logic.

CME Adds Bitcoin Cash and Uniswap Futures

Source: theblock.co ↗

CME Group plans to list futures on Bitcoin Cash and Uniswap on October 19, pending regulatory approval. Standard and Micro contract sizes are 250/25 BCH and 10,000/1,000 UNI. This brings CME’s single-asset crypto derivatives roster to 11 tokens, with Uniswap marking the first DEX governance token the exchange has listed.

CME averaged 279,800 contracts per day in H1 2026, about $8.3 billion in daily notional. Altcoin-specific contracts generated more than $1 billion in notional for the year. The listings follow CME’s June launch of a 24/7 crypto futures and options market. The takeaway: institutional participants are pushing for regulated venues to manage altcoin price risk, and CME is obliging with a widening asset set.

Post-Poseidon: Ethereum's Hash Function Reckoning

Source: ethresear.ch ↗

The emergence of Flock as a practical post-quantum proof system for binary circuits removes Ethereum’s requirement for circuit-friendly hashes like Poseidon. This ethresear.ch analysis opens five protocol layers - consensus signatures, CL aggregation, state tree construction, EL signatures, and EL aggregation - to standard hash function candidates. Performance targets set the bar at proving 2^25 bytes per second with LeanVM and roughly 1 million hash calls per second.

BLAKE3 leads on raw speed at 7 GB/s parallel and 1.1 cycles per byte on long messages, but carries no indifferentiability proofs and a thin cryptanalytic record. SHA-3 holds 50+ published cryptanalytic papers and sponge-mode indifferentiability proofs but runs at only 0.2 GB/s natively. The research ranks SHA-3 and BLAKE2s as the lowest-risk selections. SHA-2’s length-extension property disqualifies it as a random-oracle substitute despite 45+ cryptanalytic papers. All candidates work iteratively, so performance depends on chunk count rather than byte length.

Tether Walks Away from MiCA

Source: threadreaderapp.com ↗

Tether abandoned MiCA compliance in the EU over a rule requiring 60% of reserves in commercial bank deposits. CEO Paolo Ardoino argues this would expose 400 million users to risk since EU deposit insurance caps out at €100,000 per account. Tether holds roughly 80% of its $183 billion in reserves in US Treasuries.

USDT was delisted from all EU exchanges on July 1, though Ardoino said Tether would reconsider “when MiCA becomes safer.” The ECB and all 27 EU central banks have separately called to scrap the 60% bank-deposit rule. The irony: the rule designed to protect users would concentrate Tether’s reserves in accounts with €100,000 insurance caps, which is worse than the Treasury bill exposure it currently holds.

Kalshi Defends Its Perpetuals Volume

Source: news.kalshi.com ↗

Kalshi published a rebuttal to wash trading allegations on its perpetuals platform. The defense turns on trade economics: analyzed trades showed aggressors captured roughly $98,000 in profit potential, a signal of genuine price discovery rather than coordinated self-dealing. Self-trading is mechanically blocked, and partner trading is surveilled and banned. Market maker incentives are flat fees for resting liquidity, not volume-based.

Kalshi also cited 350,000+ lifetime perpetual traders, open interest doubling over the past 30 days, and a July 2026 fee holiday structure for Self-Clearing Members that caps rebates at exact fees paid per trade. That structure blocks the net-negative outcomes that would characterize artificial volume. The company argues its flat-fee liquidity incentive programs mirror standard structures at CME, CBOE, and Nasdaq.

Quick Links

Source: threadreaderapp.com ↗

BitMEX ended exchange operations as of 04:00 UTC on September 23. The exchange that defined crypto derivatives in the 2010s is done.

Binance will rebrand its Funding Account to “Stocks Account”, migrating crypto assets to Spot Accounts in phases starting September 29 through January. After the migration, Funding Accounts handle only equities and stock options clearing.

Strategy bought 950 BTC for $75.7 million at an average of $79,670/coin between September 14-20. Total holdings now stand at 846,000 BTC - more than 4% of Bitcoin’s 21 million hard cap.

Cardano was added to Coinbase’s x402 SDK, making it the first non-EVM chain on the protocol. Apps and AI agents can now settle API calls with ADA or Cardano Native Tokens over standard HTTP requests.