Now i only concern if the developer will keep 20 coin per block after 10,000 blocks
if he keep, the coin is dead,
if he don't, this coin is good,
can anyone know code look at the source?
Only for the first 10000 blocks.
You can check the block explorer:
For example
block 5000:
see the first row of the transactions, 1500 coins are generated, 1480 go to blockfinder wallet and 20 to dev wallet.
If you check the blocks > 10000 you will only find small amounts of generated coins (PoS) and nothing going to dev wallet.
For example
block 16095:
1.69758734 SUM are generated and paid as fee to the blockfinder.