$BTC

#BitcoinCore Update Sparks Controversy Over OP_RETURN Limit Removal

Bitcoin Core's upcoming update plans to remove the longstanding 80-byte limit on the OP_RETURN function, igniting a sharp debate within the community. Core developer Greg Sanders backs the change, arguing it will help clean up the UTXO set and standardize node behavior. However, critics like Luke Dashjr strongly oppose it, warning it could invite network spam and misuse.

The OP_RETURN function allows users to embed arbitrary data in Bitcoin transactions—currently capped at 80 bytes. Sanders points out that users already circumvent this limit by embedding data in less transparent and potentially more harmful ways. He argues that removing the cap could promote more honest data use. In contrast, Dashjr fears the change compromises Bitcoin’s role as a financial protocol, instead pushing it toward becoming a general-purpose data layer.

In response, Dashjr is promoting Bitcoin Knots, a fork of Bitcoin Core with stricter data controls, which has already reached nearly 5% adoption. Meanwhile, prominent figures like Samson Mow are urging node operators not to upgrade, citing risks to Bitcoin’s core mission.

The controversy reflects a broader ideological split—innovation vs. protocol purity—and raises concerns about network fragmentation. If enough node operators resist the change, Bitcoin could face governance friction and reduced cohesion, potentially shaking market confidence and triggering short-term $BTC selling pressure.

As the update nears, the community faces a pivotal moment that may shape Bitcoin’s long-term direction.