What is the public address of the Bitcoin Genesis block coinbase?
Answer
1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
Answer
1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
The public address conventionally associated with the Bitcoin Genesis block coinbase is 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa.
The Genesis block is Bitcoin’s block 0, mined by Satoshi Nakamoto on January 3, 2009. Its coinbase transaction created the original 50 BTC block reward and included the famous message referencing The Times headline, “Chancellor on brink of second bailout for banks.” The output is commonly displayed by explorers under the address given in the quiz.
There is an important technical nuance: the original output is a pay-to-public-key (P2PK) script. Strictly speaking, it does not contain a modern pay-to-public-key-hash address in the same way later transactions do. Explorers derive or label the associated public-key destination as 1A1z…, which is why that string is universally known as the Genesis address.
The Genesis reward has never been spendable under Bitcoin’s treatment of block 0. Coins sent to the associated address later are separate transactions and should not be confused with the original 50 BTC reward.
Source: Wikipedia · fact-checked Sept. 2026