Early Bitcoin transactions did not use addresses.
Example from block 1:
https://www.blockchain.com/btc/tx/0e3e2357e806b6cdb1f70b54c3...
You'll see at the bottom that the opcode is a PUSH / CHECKSIG rather than the later DUP / HASH160 / PUSH / EQUALVERIFY / CHECKSIG format.
So this isn't true. (blockchain.info derives an address but actually the pubkeys are right there in plain sight. Have at it!)
Early Bitcoin transactions did not use addresses.
Example from block 1:
https://www.blockchain.com/btc/tx/0e3e2357e806b6cdb1f70b54c3...
You'll see at the bottom that the opcode is a PUSH / CHECKSIG rather than the later DUP / HASH160 / PUSH / EQUALVERIFY / CHECKSIG format.
So this isn't true. (blockchain.info derives an address but actually the pubkeys are right there in plain sight. Have at it!)