According to Farside Investors, the account drew attention to OP_RETURN by sharing a BitMEX Research post on X on Oct 17, 2025, without providing additional metrics in the post. Source: Farside Investors on X. The post links traders to BitMEX Research on X for the underlying OP_RETURN context and details. Source: BitMEX Research on X. OP_RETURN is a Bitcoin script opcode that embeds small pieces of data in provably unspendable outputs, which consumes blockspace and contributes to network load that traders track for fee risk. Source: Bitcoin.org Developer Guide; Bitcoin Core documentation. When demand for blockspace rises, fee rates tend to increase as blocks fill, raising on-chain transaction costs and the fee component of miner revenue that can affect BTC settlement timing and costs. Source: Bitcoin.org Fee Estimation Guide; Bitcoin Core policy documentation. Traders should monitor mempool size and sat/vB fee bands to gauge potential changes in BTC transaction costs and settlement latency around OP_RETURN-related activity. Source: mempool.space data. For specific context on today’s reference to OP_RETURN, review the linked BitMEX Research thread to align trading decisions with any identified changes in usage patterns. Source: BitMEX Research on X.