BTC $64,866.10 +1.65%
ETH $1,926.67 +1.35%
BNB $592.75 +3.91%
XRP $1.08 +1.36%
SOL $74.67 +1.75%
TRX $0.3286 +0.96%
DOGE $0.0707 +1.17%
ADA $0.1699 +5.11%
BCH $216.77 +3.08%
LINK $8.49 +2.47%
HYPE $55.81 +3.73%
AAVE $99.53 +3.44%
SUI $0.6951 +1.59%
XLM $0.1724 +0.50%
ZEC $473.54 +1.44%
BTC $64,866.10 +1.65%
ETH $1,926.67 +1.35%
BNB $592.75 +3.91%
XRP $1.08 +1.36%
SOL $74.67 +1.75%
TRX $0.3286 +0.96%
DOGE $0.0707 +1.17%
ADA $0.1699 +5.11%
BCH $216.77 +3.08%
LINK $8.49 +2.47%
HYPE $55.81 +3.73%
AAVE $99.53 +3.44%
SUI $0.6951 +1.59%
XLM $0.1724 +0.50%
ZEC $473.54 +1.44%

cati

All
Article
Flash

Base Build launches Verify Onchain, using on-chain identity verification to solve the airdrop witch attack problem

According to official news, Base Build announced the launch of Base Verify Onchain to address the issue of witch attacks in the blockchain ecosystem. This feature has been launched on the Base Sepolia test network, allowing developers to implement the "one real user, one claim" rule in smart contracts. Base Build stated that traditional airdrop mechanisms are easily manipulated by bulk wallets, and a large number of rewards are often obtained by professional airdrop farmers, while users who genuinely participate in product development can only receive limited benefits.Base Verify Onchain helps project teams identify multiple wallets controlled by the same user by generating a stable identity hash for each real user, without needing to obtain users' names, account information, or other private data. Users can complete verification through existing accounts such as Coinbase, Instagram, X, and TikTok. The system then returns a verified identity credential to the smart contract, which automatically enforces rules such as claim limits, voting restrictions, or quota controls. Currently, Base Verify has been used over 300,000 times and serves collaborative projects such as Base App, Cody, Scratch, and Bracket. Base Build stated that Verify Onchain will provide fairer airdrops, token distributions, governance voting, and user incentive mechanisms for decentralized applications. Developers can use this technology to limit the number of claims per real user, allocate rewards based on real identities, or convert real-world signals into on-chain credibility, thereby reducing the impact of bots and multi-wallet manipulation on the fairness of Web3 applications.

The enthusiasm for BTC allocation among listed companies continues to cool, with a net sell-off of 15.92 million dollars in a single week

According to SoSoValue data, as of 8 AM Eastern Time on July 27, 2026, the total net sell-off of Bitcoin by global listed companies (excluding mining companies) in the past week was $15.92 million, a decrease of 1,296.99% compared to last week.According to official documents, Strategy did not purchase Bitcoin last week, selling approximately 5.43 million shares of MSTR between July 20 and July 26, resulting in a net gain of $544.5 million, and spent $25 million to repurchase 288,930 shares of STRC preferred stock.The Japanese listed company Metaplanet did not purchase Bitcoin last week.In addition, three other companies bought or sold Bitcoin last week. Aerospace-grade defense battery thermal management and safety solutions provider KULR announced on July 24 that it generated approximately $21.5 million in revenue from July 9, 2026, to July 23, 2026, selling 333 Bitcoins at a price of $64,538, reducing its total holdings to approximately 760 Bitcoins; asset management company Strive announced on July 27 that it spent $5.19 million to purchase 79 Bitcoins at a price of $65,723, bringing its total holdings to approximately 20,000 Bitcoins; Brazilian Bitcoin company OrangeBTC announced on July 27 that it spent $394,500 to purchase 6 Bitcoins at a price of $65,742, increasing its total holdings to 3,918 Bitcoins.Metaplanet subsidiary Bitcoin Japan announced a convertible bond financing agreement with EVO Fund, intending to raise 9.66 billion yen (approximately $59.5 million) to establish a cryptocurrency asset treasury.As of the time of publication, the total amount of Bitcoin held by global listed companies (excluding mining companies) in the statistics is 1,139,480 Bitcoins, a decrease of 0.02% compared to last week, with a current market value of approximately $7.416 billion, accounting for 5.7% of Bitcoin's circulating market value.
app_icon
ChainCatcher Building the Web3 world with innovations.