Bitcoin Could Split in Two This Weekend: What Holders Need to Know

NewsFri, 07 Aug 2026 11:01:12 UTC2 hours ago
Bitcoin Could Split in Two This Weekend: What Holders Need to Know

BIP-110's author has told Bitcoin users to stop running Bitcoin Core, warning it becomes insecure once mandatory signaling begins. Michael Saylor says the opposite, urging the proposal's backers to stand down.

Both men are describing the same event at block 961,632. They disagree entirely on which side of it Bitcoin ends up.

Why BIP-110 Wants Users Off Bitcoin Core

BIP-110 is a temporary rule change, or soft fork, that caps how much data a Bitcoin transaction can carry. It ships in Bitcoin Knots, a smaller rival to Bitcoin Core.

Dathon Ohm, the pseudonymous developer who wrote the proposal, said mandatory signaling would start in 290 blocks. After that, miners must set versionbit 4, a flag in the block header.

Blocks without it become invalid to BIP-110 nodes.

He told miners and users to install Knots, then went further.

"It is not recommended to run Bitcoin Core, as it will become insecure when mandatory signaling begins, and miners getting their templates from Core may produce invalid blocks on an incoherent chain that keeps being wiped out, along with any earnings," Ohm wrote.

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