The OECD introduced the Crypto-Asset Reporting Framework (CARF) to enable cross-border exchanges of crypto transaction data. According to PANews, Hong Kong will collect information in 2027 and begin exchanging data in 2028. South Korea has postponed crypto taxation until 2029 because of gaps in data coordination. The information exchanged will cover transaction records; taxable gains will still depend on an individual’s tax status and cost calculations.

Crypto market sectors declined across the board on November 6, led by a 7.31% drop in DePIN over 24 hours. According to Odaily, SoSoValue data showed Grass (GRASS) fell 14.32%, Filecoin (FIL) dropped 8.47%, and Render (RENDER) declined 5.72%. Bitcoin (BTC) fell 5.66% to the $76,000 level, while Ethereum (ETH) dropped 7.71% to below $2,300. Other sector declines included CeFi, down 3.63%, with Cronos (CRO) falling 6.22%; Layer 1, down 4.06%, with NEAR Protocol (NEAR) down 8.23% and Injective (INJ) up 2.94%; PayFi, down 5.07%, with XRP falling 7.19%; Layer 2, down 5.10%, with Mantle (MNT) down 8.79%; Meme, down 5.88%, with SPX6900 (SPX) down 9.72%; and DeFi, down 6.45%, with Ethena (ENA) falling 10.58%. Among indices tracking historical sector performance, ssiDePIN fell 7.24%, ssiRWA declined 7.17%, and ssiDeFi dropped 6.74%.

According to ChainCatcher, Fields proposed a scheme requiring an attacker attempting to steal 1 BTC to also provide 1 BTC as collateral from a quantum-safe wallet. Both amounts would be locked for a waiting period, such as 30 days. Before quantum attacks become feasible, holders could create a quantum-safe “landmine” containing hidden proof of ownership. If a thief tries to move vulnerable coins, the stolen BTC and the thief’s collateral would be locked. The holder could reveal the proof during the waiting period to reclaim the BTC and receive the collateral as a penalty. Thieves would not know which addresses contain traps before committing funds.

Takenos has raised $7 million in an extension of its seed round, led by North Island Ventures and Road Capital Management. According to Odaily, existing investors Variant, Lattice and Reverie also participated, bringing the company’s total funding to $12 million. Founded in 2022, Takenos operates in six Latin American countries and processes more than $5 billion in annual transactions. Its customers include global companies such as LATAM Airlines. The company develops local payment rails, a consumer application, enterprise APIs and an institutional trading desk, and counts Stripe, Mastercard and Visa among its partners.

According to ChainCatcher citing the Nikkei, Chainalysis data showed that North Korean hackers were involved in 89% of reported crypto theft cases in 2026, compared with 15% in 2021. The report said the hackers are increasingly using generative AI to create fake documents and impersonate technical staff. The South Korean government estimates that more than 8,000 people are involved in related operations run by North Korean authorities.

MetaMask said all affected Ethereum validators had exited following an unauthorized infrastructure access incident discovered on September 28, and that its wallets were unaffected. According to Foresight News, the crypto wallet application issued an update on November 5 about the incident. The team said it found no evidence that customers’ staking principal was accessed or withdrawn without authorization. However, an attacker briefly changed the execution-layer reward recipient addresses for some validators, transferring about 0.385 ETH in rewards. MetaMask said it repaired and strengthened the affected systems on the day of the incident. Wallet users do not need to take action. Some staking customers may experience temporary withdrawal delays or miss rewards, and MetaMask is addressing those effects directly.

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