How Are New Bitcoins Produced? Follow the Block Subsidy

New bitcoin enters circulation when a miner finds a valid block and the network accepts it. The block can pay that miner a preset subsidy of newly issued BTC plus fees from transactions included in the block. The subsidy follows Bitcoin's rules and decreases at scheduled halvings. Buying BTC, receiving a payment or moving coins between wallets changes ownership of existing bitcoin; none of those actions produces new coins.

Begin with a proposed block, not a coin factory

People send signed Bitcoin transactions to the network. Miners collect eligible transactions, choose a candidate block and compete to find a block header that meets the current proof-of-work target. The competition involves repeated hash calculations with specialized hardware. Finding the target does not let a miner set an arbitrary reward; other nodes still test whether the entire block follows the protocol's rules.

Bit.Fan's introduction to how bitcoin is created uses the image of miners competing to write the next page of a shared ledger. The image is helpful if one distinction remains clear: mining both confirms a block of transactions and permits a limited amount of new BTC to be issued in that block. The ledger entry is not a physical coin being manufactured or a balance typed into a company's database.

Bitcoin's official FAQ describes mining as competitive and decentralized, with new bitcoin issued at a fixed, declining rate. It says nodes reject blocks that violate the rules they enforce. A miner with more computing power may have a better chance of finding a block, but computational power alone does not make an invalid overpayment acceptable to the network.

Where the newly issued BTC appears

In a winning block, the special first transaction commonly called the coinbase transaction assigns the miner's permitted reward. This is unrelated to the company named Coinbase. The reward has two components: the block subsidy, which is new issuance, and transaction fees, which are existing BTC paid by senders. Treating the entire reward as newly created bitcoin overstates how much supply increased.

For example, imagine a valid block whose permitted subsidy is 3.125 BTC and whose included transactions pay 0.40 BTC in fees. The miner's total potential reward is 3.525 BTC. Only 3.125 BTC is newly issued; the 0.40 BTC was already circulating and has changed hands. The fee figure is illustrative, not a current or typical block-fee quote.

Other nodes independently examine the block, its proof, transactions and reward amount before accepting it as part of their chain. If a miner wrote 4 BTC of newly issued subsidy where the rules allowed 3.125, honest validating nodes would reject the block. The miner would have spent resources finding proof without gaining a valid payment. This verification is the practical answer to “who decides how many bitcoins are produced?”

Understand the subsidy schedule

The Bitcoin halving schedule shows that the subsidy began at 50 BTC per block, dropped to 25 in 2012, 12.5 in 2016, 6.25 in 2020 and 3.125 after the 2024 halving. A halving occurs after every 210,000 blocks rather than on a precise calendar date. By September 2026, the current scheduled subsidy is 3.125 BTC per valid block, subject to the normal consensus rules.

Blocks target an average interval near ten minutes, but an individual block can arrive sooner or later. Multiplying 3.125 by a fixed number of blocks per day gives only a rough issuance estimate, not a guaranteed daily output. The block-count schedule is what determines each halving; changes in how long blocks take can shift the expected date of the next one.

The declining sequence approaches the designed maximum of 21 million BTC over a long period. “Maximum” does not mean every coin already exists or is available to buy. Newly issued amounts become smaller at later halvings, while miners can continue to earn transaction fees for confirming blocks when subsidy issuance eventually ends. A lost private key may also make an existing coin inaccessible without removing it from the protocol's issuance history.

Mining pools divide rewards, not the issuance rule

A solo miner that finds a valid block can claim the reward under the network's rules. A mining pool coordinates work among participants and distributes payouts according to its own contract and measured contributions. A pool can smooth how often a small participant receives a payout, but it cannot mint additional subsidy for its members or guarantee profit. Pool payments can include portions of rewards from blocks found by the combined group.

Specialized mining equipment, electricity, cooling, maintenance, hosting and pool fees determine a participant's economics. The value of BTC received also depends on a market price that changes. Understanding that mining issues coins does not prove that buying hardware will be profitable. Nor does obtaining BTC as wages, from an exchange or through an airdrop mean that the Bitcoin protocol created coins for that person at that moment.

Separate creation from circulation

Suppose one person buys 0.1 BTC from another. The transaction can be recorded in a mined block, and its fee may go to the miner, but the 0.1 BTC already existed. Only the valid block subsidy adds new supply. Similarly, a wallet can show a newly received balance without indicating newly issued coins. “New to my wallet” and “new to Bitcoin” are different statements.

New bitcoins are produced through a narrow, checkable event: a valid block with a permitted subsidy. Miners compete to create that block; nodes enforce the reward rule; halvings lower the amount over time. Fees reward the same activity without increasing supply. Following those pieces gives a clearer account of bitcoin production than imagining a company printing coins or a miner simply choosing a number.