Daily Summary2026-08-27

StarkWare said a transaction using researcher Avihu Levy's Quantum-Safe Bitcoin (QSB) scheme was confirmed on Bitcoin's mainnet — described as the first quantum-resistant spend, executed under existing consensus rules with no soft fork, in collaboration with MARA's mining pool. Per coverage, the test spent a 10,000-satoshi output secured by hash-based cryptography, cost a reported $75–200 in off-chain computation, required direct submission to the miner, and protects only coins moved into new outputs — not already-exposed addresses.

The SEC sent a proposed overhaul of crypto custody rules for investment advisers and funds to the White House for review, per Bloomberg and CoinDesk — described as reviving a rule the previous administration failed to finalise; the text is not yet public. Separately, the full text of the SEC's already-proposed Regulation Crypto Assets framework was published at roughly 402 pages, including its token safe harbor, per coverage.

Zano's Hard Fork 6 activated on mainnet, per the project's announcement — inside the Aug 25–27 window flagged in prior coverage. The upgrade delivers Gateway Addresses, which let exchanges and services read an account balance without scanning the full chain, plus per-output payment IDs for exchange compatibility and ChaCha20 wallet encryption, per prior reporting.

Dallas Fed research warned that tokenised deposits — bank deposits issued on blockchain rails, the industry's structural alternative to stablecoins — could drain up to roughly $700 billion from bank lending capacity by making deposits faster to move, per Decrypt. Separately, coverage reported major banks including Bank of America, Wells Fargo and Santander weighing a jointly issued stablecoin targeted for 2027, and the BankChain Alliance's planned shared network now carries a 2027 launch target.

BlackRock cut the minimum for converting bitcoin directly into IBIT shares from $25 million to $1 million, per a Bloomberg report — and cumulative in-kind conversions have passed $5 billion, up from about $3 billion in October, per BlackRock's Robbie Mitchnick, who cited kidnappings, ransom and custody failures as motivation. The swaps defer capital-gains tax by avoiding a sale, move existing coins into the fund rather than adding new cash, and the practice is spreading: Bitwise cut its threshold to $3 million.

Revolut began a phased rollout of EURR, a euro-pegged stablecoin, to selected customers in Denmark, Poland and Portugal, per the company — issued under MiCA by Bridge Building S.A., the Luxembourg entity of Stripe-owned Bridge, which holds the reserves; Revolut's MiCA-authorised European arm distributes it in-app, initially on Ethereum and Polygon with external-wallet transfers supported. Coverage noted the launch comes as Revolut withdraws Tether's USDT from EEA and Swiss accounts, with remaining balances converted after August 31; Revolut says stablecoins in other currencies are in development.

LND disclosed a channel-close flaw whose reproduced worst case can expose a channel's full balance — requiring a malicious peer, a one-block reorganisation and an old revoked state; the official fix ships in 0.21.0, leaving earlier standard releases unprotected, and coverage noted the fix landed later than disclosure suggested. Separately, Core Lightning confirmed multiple critical vulnerabilities on Aug 26: an initial offline advisory was superseded by patched releases, with operators urged to upgrade and stay online since a stopped node cannot respond to force-closes. No confirmed losses in either case, per the projects.

Shinhan Financial and Visa launched a pilot to build stablecoin infrastructure and test issuance and business-to-business settlement in South Korea, per CoinDesk. No transaction volumes, supported currencies or commercial timeline were disclosed. The tie-up puts an incumbent Korean bank and a global card network jointly behind won-ecosystem stablecoin rails, and marks Shinhan's second reported on-chain move alongside its earlier Solana bond-fund plans.