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US spot Bitcoin ETFs recorded USD 1.177 billion in weekly net outflows, led by BlackRock's IBIT with USD 1.209 billion in withdrawals.
Large ADA holders sold approximately 50 million tokens since November.
Ethereum delayed its Hoodi testnet upgrade over gas-related concerns.
The crypto market witnessed several major developments as spot Bitcoin ETFs recorded USD 1.28 billion in weekly net outflows, while Cardano whales offloaded approximately 50 million ADA tokens. Meanwhile, Ankr’s Ethereum bridge suffered a USD 303,000 exploit and Solana developers proposed removing durable nonces following the USD 270 million Drift hack.
According to SoSoValue, the Bitcoin spot ETFs experienced a net outflow of USD 1.177 billion during the previous trading week.
BlackRock's IBIT recorded the largest weekly net outflow, at USD 1.209 billion, while its cumulative historical net inflow stood at USD 65.1 billion. Grayscale's Bitcoin Trust (GBTC) ranked second, with a weekly net outflow of USD 61.0081 million and a cumulative historical net outflow of USD 28.11 billion.
The largest weekly net inflow was from Fidelity's ETF FBTC, with a weekly net inflow of USD 93.117 million and a cumulative historical net inflow of USD 10.27 billion.
The total net asset value of Bitcoin spot ETFs stood at USD 95.9 billion, with an ETF net asset ratio of 6.28% and a cumulative historical net inflow of USD 55.7 billion.
Solana developers are preparing to remove durable nonces, the transaction feature exploited in April’s USD 270 million Drift Protocol hack.
The proposed change marks a major shift in how the network handles offline approvals, with implications for exchanges and institutional custodians. The proposal, known as SIMD-0723, would retire a mechanism that allows signed transactions to remain valid indefinitely.
Attackers reportedly exploited this functionality to execute pre-approved transactions more than a week after obtaining signatures from Drift’s security council.
Also Read: Bitcoin Block Packs 11,255 Transactions, Nears 12,239 Record Set in 2015
Cardano (ADA) remains under pressure on Monday, trading around USD 0.1748 after recording five consecutive weeks of losses. The cryptocurrency declined more than 9% last week, extending a downturn.
According to Santiment’s Supply Distribution data, wallets holding between 10 million and 100 million ADA have collectively offloaded approximately 50 million tokens since November 4. ADA trades around USD 0.1748, remaining firmly below its major Exponential Moving Averages (EMAs).
The 50-day EMA stands at USD 0.209, while the 100-day EMA is positioned at USD 0.211. Meanwhile, the longer-term 200-day EMA sits considerably higher at USD 0.232.
Ankr’s Ethereum cross-chain bridge suffered an exploit on November 9, involving five unauthorized withdrawals that drained more than USD 303,000 in crypto assets. The incident raised questions about the bridge’s transaction verification process.
Blockchain security firm Blockaid identified the attack on Monday, reporting that an attacker used a small deposit on Optimism to withdraw assets locked in Ankr’s Ethereum bridge.
Its initial estimate placed the losses at approximately USD 292,000 across five transactions, although subsequent analysis of the withdrawn tokens put their combined value above USD 303,000. The firm described the incident as an 'ongoing exploit,' warning that the attacker had moved the bridge’s assets into a new wallet.
Ethereum developers put the Hoodi testnet fork on hold while they work through findings about how applications behave when a transaction runs low on gas.
The Hoodi activation, originally scheduled for October 26, was postponed. Sepolia ran Glamsterdam on October 6. On November 6, Ethereum Foundation developer Marius van der Wijden said Hoodi remained on hold while teams reviewed gas-related issues.
Auditors, including ChainSecurity, found that EIP-8037 (state-creation accounting) and EIP-8038 (repricing state access) can make contracts written before the upgrade behave differently. The report highlights impacts on gasleft checks, EIP-150 forwarding (roughly one sixty-fourth retained) and failure-handler paths.
Also Read: Top 10 Ethereum Ecosystem Developments to Watch in 2027
1. Why did Bitcoin ETFs record USD 1.177 billion in outflows?
US spot Bitcoin ETFs experienced USD 1.177 billion in weekly net withdrawals, led by BlackRock's IBIT with USD 1.209 billion in outflows. The figures indicate substantial selling pressure, although the data does not establish investors' specific reasons for withdrawing.
2. Why is Cardano's ADA price declining?
Cardano traded around USD 0.1748 after five consecutive weeks of losses, with large wallets selling approximately 50 million ADA since November 4. The cryptocurrency also remained below its 50-day, 100-day and 200-day exponential moving averages.
3. What happened in the Ankr bridge exploit?
Ankr's Ethereum cross-chain bridge reportedly suffered five unauthorized withdrawals worth more than USD 303,000 on November 9. According to Blockaid, the attacker exploited the bridge using a small Optimism deposit and transferred the withdrawn assets into another wallet.
4. Why is Solana planning to remove durable nonces?
Solana developers proposed SIMD-0723 to eliminate durable nonces following their reported exploitation in the USD 270 million Drift Protocol hack. The change aims to address risks associated with transactions that remain valid long after being signed.
5. Why did Ethereum postpone the Hoodi testnet upgrade?
Ethereum developers delayed the Hoodi testnet fork after identifying potential compatibility issues involving gas accounting and transaction execution. Auditors found that EIP-8037 and EIP-8038 could change how existing smart contracts behave under low-gas conditions.
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