Early stage mining why different address for each blocks mined?

[hushan]

In the early stage of bitcoin, it is said most of the blocks are mined by Satoshi on his laptop, but why each block would use a different addresses for generated coins?
Was it for safety purpose?

[bob123]

It was not for safety purpose, but for anonymity.
While bitcoin itself is not anonymous at all (rather pseudonymous), using an address only once increases the anonymity by others not being able to link all of those transactions
until multiple UTXO's (from different addresses) are being spent together.

One of satoshis intentions was to create an partly anonymous digital currency.
Using the same address for every mined block would kind of kill this purpose.


Additionally it can't be said for sure that all of the first blocks have been mined by satoshi.
His miner crashed after 'a few' blocks. Other people were mining in the timeframe of his miner being down.
Wether an address from early mining does belong to satoshi or to other early-early-adpoter can't be told for sure.
 

[hushan]

It was not for safety purpose, but for anonymity.
While bitcoin itself is not anonymous at all (rather pseudonymous), using an address only once increases the anonymity by others not being able to link all of those transactions
until multiple UTXO's (from different addresses) are being spent together.

One of satoshis intentions was to create an partly anonymous digital currency.
Using the same address for every mined block would kind of kill this purpose.


Additionally it can't be said for sure that all of the first blocks have been mined by satoshi.
His miner crashed after 'a few' blocks. Other people were mining in the timeframe of his miner being down.
Wether an address from early mining does belong to satoshi or to other early-early-adpoter can't be told for sure.
 

Ok, so it's the same situation as like one should use a new address for each receiving for privacy.
But what changes now? Because looking at the miner stats, like https://blockchain.info/blocks/BTC.com , https://blockchain.info/blocks/F2Pool , although I didn't check all of their mined blocks, but latest several blocks mined by each are indeed using the same address.

[bob123]

Ok, so it's the same situation as like one should use a new address for each receiving for privacy.

Correct.

But what changes now? Because looking at the miner stats, like https://blockchain.info/blocks/BTC.com , https://blockchain.info/blocks/F2Pool , although I didn't check all of their mined blocks, but latest several blocks mined by each are indeed using the same address.

Nothing has changed.
Miner do decide for themselve which address they include as receipent from the coinbase transaction (the mining reward).

The easiest way is to build the block always the same way.
Most miner probably have their address 'hard coded' in their software running.
This way they don't have to pregenerate a bunch of addresses and don't have to fill the list of addresses again once it is going to 'get empty'.

While i can't say for sure why they use the same address for every block they mine.. i would assume it is because of convenience.