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Odaily News, March 24 – Antpool mined Bitcoin block 941,881 at UTC time 15:49:35. Foundry USA mined another version of the same height 12 seconds later, briefly creating two competing chains on the Bitcoin blockchain. Subsequently, ViaBTC extended block 941,882 on top of the Antpool version, while Foundry USA also continued to extend its own branch. Foundry USA then mined blocks 941,883 to 941,886 consecutively, giving its branch a cumulative workload lead. Nodes subsequently reorganized to the Foundry USA version, causing the blocks mined by Antpool and ViaBTC to become orphaned. The affected miners lost the corresponding block rewards and fees, and transactions not confirmed on the winning chain re-entered the mempool to be confirmed in subsequent blocks.
Odaily Odaily News: The Bitcoin BIP-110 forced signaling window will open at block height 961632, expected around August 9, 2026. As of 8:40 AM (EDT) on July 27, the chain height is 959842, approximately 1790 blocks away from this activation block. The current BIP-110 signaling support rate is around 2.64%. BIP-110, officially named "Reduced Data Temporary Softfork," proposes to limit the size of certain data fields within Bitcoin transactions, targeting Ordinals-like inscriptions, large OP_RETURN payloads, and similar high-data-volume use cases. If activated, the restrictions will take effect at block 965664 and automatically expire after 52,416 blocks (approximately one year). Current signaling support primarily comes from Ocean, independent miners, and small-scale operators. Major mining pools such as Foundry, Antpool, ViaBTC, and F2pool have not yet switched to supporting the proposal. Foundry has requested clients to vote based on their average hashrate; only when “support” votes exceed 51% of the participating weighted hashrate will the pool switch all its blocks to signaling support. If the current signaling level persists until block 961632, nodes enforcing BIP-110 will reject blocks that have not signaled version bit 4 and will instead follow the minority of blocks that do signal. Unupgraded nodes will continue to accept both signaling and non-signaling blocks, and will follow the chain with the most cumulative proof of work.
According to Odaily, as of June 23, 2026, Foundry Digital, AntPool, ViaBTC, and F2Pool collectively control over 70% of the Bitcoin network's hashrate, with shares of approximately 31%, 18%, 13%, and 10% respectively. Foundry Digital is a US-based mining pool backed by Digital Currency Group, primarily serving large institutions and publicly listed mining companies. In the first half of 2026, D-Central reported a Nakamoto coefficient of 3, meaning that just three mining pools would be enough to produce more than half of the blocks. ViaBTC faced stricter regulatory scrutiny in 2026, prompting some miners to shift to alternative pools like EMCD.