Peter Todd reopens Bitcoin’s 21M cap debate because transaction fees make up just 0.5% of miner revenue

Early Bitcoin developer and self-proclaimed “Bitcoin thought leader,” Peter Todd, has revived debate over Bitcoin's 21 million-coin limit and whether Bitcoin tail emission could help fund proof-of-work security as block subsidies shrink. The dispute turns on whether transaction fees alone can eventually fund adequate security.The clip posted Aug. 16 framed Todd as saying Bitcoin should eliminate the cap. Todd did not call for an immediate cap change; he framed tail emission as a long-term design question. In a July 23 talk at Bitcoin++ Toronto, Todd argued that Bitcoin is moving from subsidy-supported security toward a fee-dominant model. He said there is no proven example showing that the destination will work at Bitcoin's scale. He did not unveil a BIP, Bitcoin Core pull request, activation plan, or adoption decision.Why Bitcoin tail emission is under debateBitcoin miners earn a block reward made up of newly issued bitcoin and transaction fees. The protocol cuts the subsidy in half every 210,000 blocks, roughly every four years, until new issuance eventually stops. Fees must then account for more of miner compensation, even though demand for block space may not produce revenue th...