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Polymarket US has withdrawn two NFL player participation contract documents from the prediction market platform. The platform has completed certification with the Commodity Futures Trading Commission (CFTC) and plans to launch related products no earlier than August 27. Polymarket US certifies Bitcoin, Ethereum, and Solana price contracts, all three types of contracts are submitted in pairs and classified as swap contracts under the binary options subcategory.Both the NFL contracts and cryptocurrency contracts involve the relevant classifications. The NFL compliance analysis document has been submitted separately for confidentiality, with Polymarket US requesting permanent non-disclosure on the grounds that public disclosure would leak trade secrets and give competitors an unfair advantage. As of the record, another NFL American football eligibility contract remains in certified status.

Due to the emergency shutdown of the ThunderCore network, UPBIT will stop supporting withdrawals of ThunderCore (TT) at 09:00 on September 1, 2026, and will also advance the end date for trading support of the TT/KRW and TT/BTC trading pairs to the same day.

According to monitoring by Onchain Lens, BlackRock-related ETF wallets have withdrawn at least 3,620 BTC from Coinbase Prime in the past 10 hours, worth approximately $282 million; at the same time, they withdrew 12,530 ETH, worth about $30.6 million, totaling approximately $312 million.

According to monitoring by Onchain Lens, BlackRock has cumulatively purchased and withdrawn 2802.904 BTC, worth approximately 223.41 million USD, and 6580 ETH, worth approximately 16.57 million USD, transferring them into its IBIT, ETHA, and ETHB ETF wallets.

According to monitoring by Lookonchain, a certain whale withdrew 8,474 BNB from Binance, worth 5.9 million dollars, and deposited it into Venus.Subsequently, they borrowed 2.6 million dollars in USDT from Venus and deposited it back into Binance to buy more BNB.

According to Lookonchain monitoring, in the past 30 minutes, Ceffu (12993...4DaAXS, 0xed9...7bCDd) deposited 136.54 million USDC into Binance, and then withdrew 1,524 BTC and 59,484 ETH from Binance, valued at 118 million USD and 146 million USD, respectively.

According to Onchain Lens monitoring, two wallets (possibly related to the same whale) withdrew 750,400 HYPE tokens (approximately 6.04 million USD) from Coinbase.

On August 21, Upbit listed MANTRA (OM) as a trading warning item, and the deposit and withdrawal of this cryptocurrency has been suspended.

HTX global advisor Sun Yuchen stated that HTX has officially upgraded its security architecture in response to the community's demand for stronger security guarantees, claiming to keep user assets 100% SAFU. The upgrade includes enabling a multi-address withdrawal system, with hot wallet assets distributed across multiple addresses; withdrawal addresses are automatically rotated regularly, with old addresses immediately deactivated and no longer controlled after new addresses are activated; single address risk exposure has been minimized.Sun Yuchen mentioned that even in the event of extreme security incidents, the potential loss limit is below $1 million, fully covered by an insurance fund, and users will not lose any funds. He also reminded that withdrawal addresses will be changed regularly as part of normal security mechanisms, and users must verify the actual on-chain receipt situation. HTX stated that it will take every user feedback and every bit of user assets seriously.

According to Onchain Lens monitoring, the MSBT Bitcoin ETF address (bc1q2gzj...tqfpef) under Morgan Stanley withdrew 146.15 bitcoins from Coinbase Prime, worth approximately 11 million dollars.

MANTRA Chain tweeted that it has noticed events affecting MANTRA Chain and has temporarily suspended the operation of the chain as a precautionary measure while conducting an investigation. Currently, all endpoints and transactions have been frozen.This means that deposits to MANTRA Chain and withdrawals from the chain are temporarily affected. If users are unsure of the specific impact on a particular transaction, it is recommended to pause operations and wait for further notice. The team stated that there is currently no fundamental cause or recovery timeline to announce and will update as soon as verified information is obtained through official channels, reminding users to rely only on official MANTRA channels for updates.

The Arbitrum development team stated that they are introducing zero-knowledge (ZK) proofs into the Arbitrum platform to achieve a multi-proof settlement model. Through ZK proofs, the settlement time of Arbitrum blocks to Ethereum L1 is expected to be reduced from several days to several hours, while enhancing user, cross-chain bridge, and protocol capital efficiency, and maintaining security through the multi-proof mechanism. Related capabilities are aimed at Arbitrum One and dedicated chains based on the Arbitrum platform. Offchain will subsequently submit upgrade proposals to the DAO.Current progress includes: the ability to run the same state transition functions in SP1 zkVM as in optimistic execution, generating ZK proofs for real mainnet block production; Stylus's WASM contracts can be proven alongside Solidity contracts; the team has launched an independent Rust verifier, making ZK proofs a first-class mode alongside standard verification; the BoLD settlement protocol has supported the acceptance of ZK proofs and is endorsed by a fast confirmation committee, while the original dispute games still serve as a fallback path, forming a multi-proof architecture that coordinates ZK proofs, proof committees, and fraud proofs.The team claims to be continuously reducing proof costs and will gradually merge related code into the Nitro main production path. The next steps include further optimizing proofs and shifting to Reth-based execution, completing L1 message inbox proofs, and integrating ZK settlement capabilities into node configurations for on-demand activation across chains.

According to Lookonchain monitoring, a certain whale withdrew 30,000 ETH from Binance 20 minutes ago, worth $67.42 million. In the past 3 weeks, this whale has withdrawn 120,000 ETH from Binance, worth $237.7 million.Abraxas Capital withdrew 18,000 ETH from Binance today, worth $39.56 million. A newly created wallet (0x226...f0C4) withdrew 6,704 ETH from Binance today, worth $14 million.

According to Onchain Lens monitoring, a certain whale withdrew 42,460 HYPE from Coinbase Prime, worth approximately 2.93 million USD.In the past two weeks, this whale has withdrawn a total of 98,490 HYPE from Coinbase Prime, worth approximately 6.11 million USD.

According to Onchain Lens monitoring, BIT com (formerly Matrixport) withdrew 894.72 BTC from Binance a few minutes ago, worth approximately 61.93 million USD; three hours ago, it also withdrew 3.38 BTC, worth approximately 234,000 USD.

According to monitoring, five addresses withdrew a total of approximately $51.4 million worth of BTW tokens from Bitget in the past 9 hours, corresponding to about 150 million tokens. The withdrawal time was concentrated between 01:36 and 03:07 this morning.During this period, $BTW experienced a significant decline, dropping rapidly from about $0.6727 at 23:40 to approximately $0.3130, a decrease of about 53.4%. Data shows that BTW recorded a maximum increase of about 770% in August. Currently, the tokens withdrawn have not shown any further transfers or sales.

According to Onchain Lens monitoring, a wallet suspected to be related to Amber Group (0xB3B...221D) withdrew 200,000 HYPE from Hyperliquid 5 minutes ago, worth 13.83 million USD.

According to SoSoValue data, the total net inflow for Bitcoin spot ETFs is $189 million. The Bitcoin spot ETF with the highest single-day net inflow yesterday was BlackRock ETF IBIT, with a single-day net inflow of $144 million, bringing IBIT's historical total net inflow to $61.4 billion. Following that is Fidelity ETF FBTC, with a single-day net inflow of $23.92 million, and FBTC's historical total net inflow currently stands at $10.02 billion.The Bitcoin spot ETF with the highest single-day net outflow yesterday was VanEck ETF HODL, with a single-day net outflow of $16.92 million, and HODL's historical total net inflow currently stands at $1.07 billion. Additionally, Hashdex's Bitcoin spot ETF DEFI has initiated a liquidation process due to factors such as asset size, trading liquidity, and operating costs, having ended trading on NYSE Arca on August 17 and will subsequently delist; the fund will begin liquidating its remaining Bitcoin holdings on August 18, with cash liquidation payments to be made to holders around August 24.Bloomberg data shows that as of July 30, DEFI's assets under management were approximately $7.28 million. As of the time of writing, the total net asset value of Bitcoin spot ETFs is $79.3 billion, with an ETF net asset ratio (market value relative to total Bitcoin market value) reaching 6.12%, and the historical cumulative net inflow has reached $52.28 billion.

According to on-chain analyst Onchain Lens (@OnchainLens), a newly created wallet has cumulatively withdrawn 57,000 $HYPE from Coinbase, worth approximately 3.36 million USD.

According to Lookonchain monitoring, two newly created wallets withdrew 20,007 BNB from Binance 7 hours ago, worth approximately 12.1 million USD.