Bitcoin changes slowly, and every proposal is argued in public for a long time. A few debates are active as of 2026. They are worth knowing, without taking sides on trust.
- Covenants: should Script be able to restrict where coins can go next? Proposals such as OP_CHECKTEMPLATEVERIFY or OP_CAT could enable vaults and better layers, while critics worry about complexity and unintended uses.
- Data on the chain: how much non financial data, such as inscriptions, should nodes relay? Changes to Bitcoin Core's default limits on OP_RETURN data sparked a heated debate and pushed some users toward alternative node software.
- Quantum readiness: when and how to migrate to new signatures, and what to do with coins that never move.
- Fees and mining: the long term security budget and the concentration of mining pools.
How to follow them
Read the proposal itself, then the strongest argument against it, before reading opinions. Notice who would gain from each outcome. And remember that defaults in one software are not consensus rules: nodes choose what they run.